Remote Vehicle Start Accessory

June 2005 Volume 7, No.06

A Monthly Publication for GM Dealership Service Professionals Remote Vehicle Start Accessory Kit Remote Vehicle Start (RVS) kits will be introduced has been a popular factory- throughout 2005, fol- installed option since being lowing this tentative introduced on the 2004 schedule. Chevrolet Malibu (RPO AP3). Second Quarter Because RVS is integrated Buick LaCrosse and with the vehicle’s anti-theft Allure (Canada) and remote keyless entry sys- Chevrolet Malibu tems, it is very robust, unlike Pontiac G6 aftermarket systems that can- Pontiac Grand Prix not offer the same level of Third Quarter security and integration. It pro- Buick Lucerne vides owners with the comfort Chevrolet Impala/ of being able to enter a pre- Monte Carlo warmed or pre-cooled vehicle. Fourth Quarter In response to popular Buick Terraza demand, dealer-installed RVS Chevrolet Uplander accessory kits are now avail- Pontiac Montana SV6 AP8 may be standard equip- switch and associated wiring. able for selected vehicles. Kits Saturn Relay ment on some vehicles, it The remote control door lock can be obtained from GMSPO Chevrolet Avalanche, must be ordered for others. receiver and two key fob trans- or from your local Accessory Suburban, Tahoe* The accessory kit cannot be mitters have extended range. Distributor/Installer (ADI). GMC Yukon, Yukon XL, installed on vehicles that do Extended range is typically 2-4 IMPORTANT: You must Yukon Denali* not have these two items. times greater than standard remote keyless entry. An anten- specify which vehicle the kit *2007 MY Contents of RPO AP8 – na is included in the front or will be installed on. IMPORTANT: To qualify for The vehicle with AP8 is remote- rear glass on some vehicles. Once properly installed, the installation of the RVS acces- start ready, for quick and easy continued on page 2 kit is integrated into the vehi- sory kit, the vehicle must be installation of the cle’s systems, just like the fac- equipped with an automatic accessory kit. All tory-installed equipment. And transmission and RPO AP8 necessary hardware the kit is also covered by the (Lock Control, Entry - Remote is already there, GM warranty. AP8 and RVS Entry, Extended Range). While including a hood-ajar Contents Remote Vehicle Start Accessory Kit ...... 1 Techline News GM Service Information ...... 1 New Radio Antenna Connector ...... 3 Mode Door Actuator ...... 3 E-85 Fuel ...... 3 GM Service Information Side Differential Case Bearing Removal . . . .3 TECHAssist Path ...... 3 Faster Searches been dramatically increased. It’s now STS TPM System Issues ...... 4 as much as 10 times faster. TPM Issues ...... 4 GM Service and Parts Operations Transmission Control Module ...... 5 (SPO) is following a plan of continuous Another improvement is the kinds of Front Door Trim Panel Replacement ...... 5 improvement to the Service Informa- characters you can type when doing a Weatherstrip Lubricant ...... 5 Stanadyne Diesel Pump Replacement . . . . .5 tion (SI) website. The SI website is keyword search. Until now, you were 4T65E Intermittent Shift Conditions ...... 6 updated daily, so it’s your best source limited to letters and numbers, without Allison Transmission Filter ...... 6 for the absolutely latest service infor- punctuation. Now, you are able to use Crankshaft Balancer Tool ...... 6 A/C Refrigerant Loss ...... 6 mation. Here are the details of several two punctuation characters, the period Windshield Wiper and Washer Issues . . . .6 recent enhancements to the SI and the slash. So you can search such HVAC System Noise ...... 6 Sliding Side Door Operation ...... 7 website. items as A/C and 3.4L engine. Other Power Door Locks Inoperative ...... 7 Keyword Search characters will be added in the future. False DTC B0595 ...... 7 Keyword search now allows you to Plastic Wheel Nut Caps ...... 7 The SI home page has a bold red Instrument Pointer Position ...... 7 headline that says “Now with faster use five keywords instead of three. Low or Completely Discharged Battery . . . .7 Depending on the type of search you Rear Cargo Cover Opening ...... 7 searches.” The operative word here is Ignition Key Programming ...... 7 FASTER. And that’s no exaggeration. prefer, filtering by “any” or “all,” the Fix It Right the First Time ...... 8 Know How Broadcasts for July ...... 8 By expanding the web server re- search results will be greater or fewer, respectively. sources, keyword search speed has continued on page 2 Service and Parts Operations

1 Remote Vehicle Start Accessory Kit — from page 1

TIP: These transmitters are for RKE is programmed using the Service only, and cannot be used for remote start. Programming System (SPS). A VCI num- Contents of Remote Start Accessory ber becomes a permanent part of one Kit – The accessory kit includes two addi- specific vehicle’s engineering data. For GM TechLink is a monthly magazine tional key fob transmitters with remote this reason, a specific VCI number is valid for all GM retail technicians and start capability (with extended range, typi- only for the vehicle and control module(s) service consultants providing timely information to help increase knowl- cally 2-4 times greater than standard it is issued for and cannot be used to program another vehicle. edge about GM products and remote keyless entry), software down- improve the performance of the load instructions, and a SPID label. In the case of the Remote Vehicle Start service department. INSTALLATION PROCEDURE kit, each kit is identified by its unique Authorization Code, and each vehicle is Manager, Product Readiness: Installation is a quick and easy process. identified by its unique VIN. When a customer purchases the Remote R. M. (Bob) Savo Start Accessory Kit, the vehicle software IMPORTANT: Once the VCI number is GM Service and Parts Operations must be loaded. This requires obtaining issued, that specific kit can be installed /[email protected] only on that specific vehicle. A specific a new VCI number (see below), and down- Publisher & Editor: loading the necessary software to the VCI number cannot be used for any other vehicle. kit or any other VIN. Mark Stesney GM Service and Parts Operations TIP: Pass Thru programming must be To request a VCI number, call the [email protected] used for some vehicles. See the appropri- Techline Customer Support Center (TCSC) / at 1.888.337.1010 (1.800.503.3222 French). ate kit instruction sheet for details. Technical Editor: Apply the SPID (Service Parts ID) label – You must identify yourself as a dealer from the kit. It must be placed on a smooth, or an ADI. Jim Horner clean surface near the existing SPID label, – You must provide the VIN of the /[email protected] for future service parts identification. Do vehicle involved. 1-248-816-3641 not cover up any existing labels. – You must provide the Authorization Production Manager: Watch for additional information in an Code affixed to the instruction sheet upcoming service bulletin and accessory that is supplied with the kit. Marie Meredith bulletin. TIP: Don’t request the VCI number until Desktop Publishing: REQUESTING A VCI NUMBER you’re ready to install the kit. That way, Greg Szpaichler, MediaWurks you can be sure the specific vehicle VIN The February 2004 issue of TechLink /[email protected] contained an in-depth explanation of the and specific kit Authorization Code are FAX number: Vehicle Configuration Index (VCI) number. physically matched at the time the VCI 3 Briefly, a VCI number is assigned to a number is requested. 1-248-649-5465 - Thanks to Joyce Henk, Sharon Folts, valid calibration or group of calibrations Write to: for each module for a specific vehicle that and Mark Stesney * TechLink PO Box 500 Techline News — from page 1 Troy, MI 48007-0500 GM TechLink on the Web: available as a web publication in SI. Latest News http://service.gm.com : As before, you can click the Latest Service managers, warranty adminis- trators, general managers and office News button to see the newest bul- General Motors service tips are managers will have access through letins, campaigns and preliminary infor- intended for use by professional tech- Dealer World. The publication is mation. Also as before, you can choose nicians, not a "do-it-yourselfer." They refreshed the first day of every even- are written to inform those techni- to see the information released in the numbered month. cians of conditions that may occur on past 1, 2, 4, 6 or 8 weeks, using the some vehicles, or to provide informa- pulldown menu. Service Information DVD tion that could assist in the proper service of a vehicle. Properly trained Latest News has also been infused Because the SI website is now updated daily, it’s the best place to go technicians have the equipment, tools, with SPEED. The requested listing now safety instructions and know-how to appears much quicker. for the most up-to-date information. do a job properly and safely. If a con- The SI CD and GM ACCESS SI incre- dition is described, do not assume And, you’re sure to appreciate a new mental updates have been phased out. that the bulletin applies to your vehi- feature coming this summer. You will Your dealership recently received a cle or that your vehicle will have that soon be able to filter the display by divi- condition. See a General Motors deal- Service Information DVD (updated er servicing your brand of General sion. Want to see only the information March 1, 2005). You should regard it as that applies to Buick? Just go to the Motors vehicle for information on a backup only, for instance if your whether your vehicle may benefit from pulldown menu at the top of the Latest Internet service provider experiences the information. News page and click Buick. Or GMC, or problems. Additional information is Inclusion in this publication is not nec- Chevrolet, or whatever your choice. available at http://service.gm.com/ essarily an endorsement of the indi- Labor Time Guide index_en-US/techline.html vidual or the company. The GM Labor Time Guide is now - Thanks to Lisa Scott Copyright© 2005 General Motors Corporation All rights reserved.

2 New Radio Antenna Connector E-85 Fuel GM is introducing a new line of radios Testing Antenna Lead With the escalating cost of fuel, cus- tomers have inquired if they are able to for the 2006 model year for use in these Due to the configuration of the antenna use E-85 fuel in non E-85 compatible vehicles: lead connector, it is not recommended vehicles. Only vehicles designated for use • Impala • Lucerne • Solstice that you probe it directly with your multi- with E-85 should use E-85 blended fuel. • Monte Carlo • VUE • DTS meter test probes. These radios are The only E-85 compatible vehicles pro- Plug the EL-47749 Test Adapter duced by General Motors are 2000 - 02 easily recognized onto the antenna connector. Then by the large center- S series pickups equipped with the 2.2L plug your multimeter test leads L43 4-cylinder engine and 2002 - 05 full- mounted ON/OFF/ (without probes attached) into the VOLUME knob. You size pickups and utilities equipped with color matching sockets on the tester. may familiarize your- the 5.3L L59 VIN code Z V8 engine. All You can now use your multimeter to self with the operat- other gasoline engines including all 5.3L test the antenna for continuity and ing features of these radios, using the V8 with VIN designators other than the appropriate owner’s manual available on SI. resistance, following SI procedures. letter Z are not E-85 compatible. TIP: Red is the center conductor and E-85 compatibility is designated for Disconnecting Antenna Lead black is the outer shield conductor. Although the antenna lead visually vehicles that are certified to run on a mix- resembles those used on other radios, - Thanks to Nohr Tillman and ture of up to 85% ethanol and 15% gaso- there is an important difference. Jim Hughes line. All other gasoline engines are designed to run on fuel that contains no The antenna connector has internal fin- more than 10% ethanol. Use of fuel con- gers that grip the cen- taining greater than 10% ethanol in non ter portion of the sock- E-85 designated vehicles can cause drive- et on the rear of the ability issues, Service Engine Soon lights, radio chassis. The main and increased fuel system corrosion. circuit board can be - Thanks to Jay Dankovich damaged if you attempt to simply pull the antenna lead to disconnect it from the Locking fingers inside connector New EL-47749 Test Adapter Side Differential radio chassis. Instead, (1) slightly Case Bearing push the antenna lead toward the radio to re- Removal lieve tension on the in- When removing the side differential ternal fingers. Then (2) case bearings, you may discover that J- pull back on the spring- 22888-20A does not work, because loaded locking ring and some limited slip differential cases do remove the connector not have notches for the jaws of the from the radio. puller. Use J-34168 to press the bearing To install the anten- off the case. na lead, simply plug Socket located close to Pulling lock ring to release - Thanks to Lance Mossman, Applegate it into the socket until circuit board antenna lead it clicks. Chevrolet, and Jon Garfield

Mode Door Actuator TECHAssist This information applies to the 2002 Chevrolet TrailBlazer, GMC Envoy and the Path Oldsmobile Bravada. The April issue of TechLink provided According to bulletin 05-01-38-001A (SI document 1645422), there’s a new pro- information on when and how to call cedure for HVAC Mode Door Actuator replacement. Refer to the bulletin for details. Technical Assistance and Techline. Using Puller GE-47676 permits removing the Mode Door Actuator from under- Here’s a revised path for locating train- neath the IP carrier. It’s no longer necessary to remove the entire IP carrier for ing for the Technical Assistance access to the Mode Door Cam Assembly. A Mode Valve Actuator is now available Preparedness Information Form on the under p/n 89018539. www.gmtraining.com website. For this new procedure, do not use Mode Valve – Menu Cam Assembly p/n – Service Know-How 89018525. – Launch TECHAssists The service procedure – Technical Service Bulletin in SI and the labor time Enhancements have been changed to – Then scroll to 010089011BT1 - reflect use of the new Technical Assistance Preparedness tool. Information Form. Do not use Mode Mode Valve Actuator 89018539 Valve Cam Assembly - Thanks to - Thanks to Rebecca Farrand and Puller GE-47676 89018525 Doug Daugherty

3 STS Tire Pressure Monitoring System Issues and are received by the RCDLR through pressure change has indeed occurred, the the antenna grid in the vehicle’s rear win- sensor will transmit in re-measure mode. dow. Extremely small cracks may develop This transmission occurs to keep the in the rear defroster grid that are not visi- TPM system updated of any changes in ble. When the defroster is turned on, tire pressure and is an integral part of the micro-arcing of electrical current that pressure increase/decrease method of occurs at the cracks resonates at a fre- the tire pressure sensor learn procedure. quency of 315 MHz. Due The sensor on the to the close proximity of Cadillac STS samples pres- the defroster grid to the sure only once every 15 antenna grid, this micro- minutes while in stationary This information applies to the 2005 arcing (noise) can interfere mode. However, the sen- Cadillac STS. with tire pressure sensor sor’s “service period” Rear Window Antenna Grid transmissions, causing a begins when the sensor’s Coaxial Connection TPM system malfunction internal roll switch opens to occur. The tire pressure sensor transmissions as vehicle speed decreas- To verify this condition, es, and it lasts for 15 min- are received by the remote control door J-46079 lock receiver (RCDLR) through the anten- use your scan tool to clear utes. During this 15 minute na grid in the vehicle’s rear window. The any stored TPM DTCs, test service period, the sensors grid is connected to the RCDLR by a drive the vehicle above 20 mph (32 km/h) sample pressure once every 30 seconds. coax cable. for at least 10 minutes, to verify normal TIP: This is the only window of oppor- system operation. Turn on the rear tunity the customer or technician has to A TPM system malfunction can occur if defroster and note if the TPM system the connection at the RCDLR is loose, perform the tire pressure sensor learn malfunction correlates with rear defroster procedure, using the pressure the center wire in the coax is bent, or the activity. If so, replace the rear window. shielding is not fully secured to the con- increase/decrease method. Otherwise, nector end, causing a poor connection. Uncommon Tire Pressure the verifying horn chirp will not occur. Always inspect this connection thor- Sensor Pressure Sampling Rate Refer to the “important” information oughly before replacing any TPM system Each sensor takes a tire pressure sam- preceding the learn procedure in SI. It is components. ple every 30 seconds while in stationary also important to note that this sensor cannot be activated using J-41760 tire Rear Defroster Grid Micro mode. If the tire pressure increases or decreases by more than 1.6 psi (11 kPa) pressure sensor activating tool (magnet). Arcing from its last transmitted pressure, anoth- The J-46079 TPM diagnostic tool must be The tire pressure sensors transmit on er pressure sample will occur immediate- used to activate this sensor. the FM band at a frequency of 315 MHz ly to verify the change in pressure. If the - Thanks to John Spidle

Tire Pressure Monitoring Issues Refer to SI -- Tire Mounting and Tire Mounting and Dismounting Dismounting section for more information. This information applies to the Tire Dismounting Tips 2000–05 Cadillac Deville, Seville, STS, – Place the sensor's cap and valve on a dry, 2004–05 Cadillac CTS, Escalade, SRX, clean surface after removal. The cap is alu- XLR, 1999–2005 Chevrolet Corvette, minum and the valve is nickel-plated to pre- 2004–05 Chevrolet Tahoe, Suburban, vent corrosion. Do not substitute a cap 2004–05 GMC Yukon, Yukon XL. made of any other material. When dismounting and mounting – When separating the tire bead from the tires, be careful when breaking the bead wheel, position the bead breaking fixture loose from the wheel rim. 90° from the valve stem. If the tire machine's bead breaking fix- – Position the mounting/dismounting head so ture is positioned too close to the TPM the tire iron or pry bar can be inserted slight- sensor, or pressed down directly on top ly clockwise of the sensor body when pry- of it, it may contact the sensor as the tire ing the tire bead up and over the mounting/ bead breaks away from the wheel rim. TPM sensor and valve stem dismounting head. This can damage the TPM sensor and – Using the tire machine, rotate the tire/wheel require the sensor to be replaced. assembly clockwise when transferring the Also be careful when transferring the tire bead to the outside of the wheel rim. tire bead to the other side of the wheel rim. As the tire machine rotates and the Tire Mounting tire bead is stretched around the wheel – Position the mounting/dismounting head rim, the bead can come in contact with 180° from the valve stem. the sensor. This can also cause sensor – Position the bead transition area 45° coun- damage, requiring replacement. Damage terclockwise of the valve stem. can be avoided by correctly positioning – Using the tire machine, rotate the tire/wheel the wheel and tire in relation to the assembly clockwise when transferring the mounting/dismounting head. tire bead to the inside of the wheel rim. TPM sensor location on wheel rim - Thanks to John Spidle

4 Transmission Control Module Many electronic control modules have become nonfunctional. TCM-related DTCs Field returns of the TCMs from these internal circuitry that connects the outer will set that previously were not stored. vehicles often display internal damage, metal case to internal ground circuits. likely due to accidental contact with the When +12 volts is connected to the metal remote positive (+) battery jump-start ter- case, damage occurs inside the control minal with the plastic cover removed. If module. This principle applies to all elec- the TCM is for any reason not installed tronic control modules in all GM vehicles into its bracket, and the vehicle battery is The following information pertains connected, the controller has enough specifically to the TCM on 2005 wiring harness length to allow it to touch Chevrolet Cobalt and the Saturn ION. the jump-start terminal. On these vehicles, the Transmission One possible solution is to disconnect Control Module (TCM) is located in a plas- the wiring harness connector from the tic bracket mounted on the front of the TCM before performing any work in the Underhood Fuse Block/Electrical Center. area. This will prevent a shorted out TCM The electrical center contains a remote TCM close to remote battery terminal in the even the controller case comes in battery (+) jump-start terminal. The TCM contact with B+. location is near the jump-start terminal. TIP: If the ignition is turned on with the When the electrical center’s plastic cover NOTICE: Control module damage may TCM disconnected, U-code communica- has been removed for diagnostic purpos- result when the metal case contacts bat- tion DTCs may set. As always, correct es, the TCM is very close to the exposed tery voltage. DO NOT contact the control the condition and clear DTCs before jump-start terminal. If the control mod- module metal case with battery voltage ule's metal case accidentally contacts any when servicing a control module, using releasing the vehicle. source of +12 volts (such as the jump- battery booster cables or charging the - Thanks to Steve Bezdek and start terminal), the control module will vehicle’s battery. Jack Woodward

Front Door Trim Panel Stanadyne Diesel Injection Replacement Pump Replacement In SI Document 734557, the procedure has been modi- This information refers to Special Policy Adjustment bulletin fied for Front Side Door Trim Panel Replacement on the 00064F, dated September 2004, and applies to 1994-2002 2002-05 Envoy, Rainier, and Trailblazer. The illustration Chevrolet and GMC trucks with 6.5L diesel engines. now has callouts showing the two bolts that must be Technician Responsibilities removed before removing the panel from the vehicle. Before calling the phone number in the bulletin to obtain an Failure to remove both bolts will result in damage to the exchange pump, complete the Diesel EFI Diagnostic Worksheet, trim panel L-bracket(s). In the included in the bulletin. event of damage, the L-bracket(s) are Check the injection pump for not serviced tags, stickers or Stanadyne tags separately, but that have been altered, indicating that the pump has been remanu- are included factured. Reman pumps are not with the arm- covered under the special policy. rest assembly available When requested, all parts through including the injection pump GMSPO. must be returned to the Warranty Parts Center. Failure to return all - Thanks to parts associated with the repair Scott Brewster will result in a debit to the dealer’s parts account. Removed pumps are not to be sold by the dealer for remanufacturing, Stanadyne tag, top Green GM tag, bottom Weatherstrip Lubricant rebuilding or scrap. Krytox® lubricant is suitable for all weatherstrip and TIPS: Take note of the following. seal applications, including sunroof seals. It is available in 1. You must obtain the exchange pump from GM TAC, by calling 1 oz. (29 ml) bottles, under the following GM p/n. the phone number in the bulletin. Special policy pumps will have a green tag with part number 17800113 or 17800114. The pump Krytox® Lubricant must be installed on the vehicle listed in the TAC case. 2. You must return all removed parts when requested. 3634770 US 10953518 Canada 3. The build date on the returned pump must correspond with the last pump replacement in the warranty history for the vehicle. 4. Pumps obtained from other sources (such as remanufactured, or TIP: Use sparingly. The container has a built-in applica- direct from Stanadyne) are not covered by this policy or GM part tor, which allows for a thin film to be applied. warranty. - Thanks to Jerry Garfield - Thanks to Ian Doran

5 4T65E Intermittent Allison Transmission Filter Shift Conditions – Service Interval Clarification The first service interval for the Allison Owners of some 2004-05 Impalas or Monte transmission is at the pickup truck’s first main- Carlos equipped with 4T65E Transmission (MN3, tenance. Change the external spin-on filter MN7) may comment that the speedometer inter- only. Every 50,000 miles (80,000 km) (normal mittently drops or fluctuates, engine appears to service) or 25,000 miles (40,000 km) (severe miss, or harsh shift. Diagnosis may not indicate service), change the spin-on filter and fluid. any codes stored or any abnormal condition. Change the sump filter only during overhaul. Inspect the routing of the power steering hose - Thanks to Bert Druelinger near the transmission output speed sensor connector. The power steering hose may be contact- ing the output speed sensor connector, caus- Crankshaft Balancer Tool ing an interruption or When installing the crankshaft balancer on the L5 engine in the Colorado/ open in the output Canyon, you will discover that the bolt that is part of installer J-41478 is too speed sensor circuit. long for use on the L5 engine. The Carefully reposition the tool interferes with the radiator. hose to prevent contact An M16 x 2.0 x 220mm bolt is sup- with the output speed plied with installer J-41478. For the L5 sensor connector. procedure, obtain and substitute an This information was posted on the Service M16 x 2.0 threaded rod or bolt, 6.5 Information Forums website by Red Oil Man. inches (165mm) long. Thank you for your contribution. - Thanks to Lance Mossman, - Thanks to Darryl Butler Applegate Chevrolet, Flint Michigan

TACTips

A/C Refrigerant Loss HVAC System Noise TIP: The pro- tective door foam This information applies to all GM Owners of some 2001-05 Chevrolet that is shipped vehicles. Venture, Pontiac Montana and Oldsmobile with a new vehi- On the A/C system, the cap with gas- Silhouette models may report a high Packing foam wedge cle is ideal. ket is the primary seal for the high and pitched whistle or air rushing sound Install the foam low side ports. If the cap gasket is miss- when the HVAC system is set to full wedge between the center defogger out- ing, it could cause a small refrigerant floor and the blower fan is set on high. let vent and the HVAC plenum on both leak and over time lose enough refriger- The noise may come and go with the sides, while maintaining upward pressure ant to create a customer comment. fan speed. A possible cause of the on the defogger outlet vent assembly. Unless care is taken when the high or noise is that the defogger vent assem- TIP: After steps 4, 5 and 6 have been low side port cap is removed, the gasket bly is not completely seated into the completed, test the system to ensure may not be retained within the cap. It HVAC plenum. that the complaint is corrected and the may fall to the floor or get lost. If all diagnostic procedures have been center defogger outlet vent has not When servicing an A/C system or exhausted and the noise remains, the become unseated. inspecting for a refrigerant leak, verify cause may be the defogger vent assembly. 7. The wedges will keep the center that the port cap gasket is present and Follow these steps to correct the noise. defogger outlet vent in position and properly installed. 1. Remove the windshield garnish provide support once the upper trim - Thanks to Jim Will molding (SI document 508258). pad is re-installed. 2. Remove the upper trim pad (SI 8. Reverse the first three steps and test document 630216). the system to ensure that the con- Windshield Wiper and 3. Remove the side window defogger cern is repaired. Washer Issues outlet ducts (SI document 858993). - Thanks to Charles Avritt, and Steve Wamback at St. Clair Motors On some 2002-05 Chevrolet, GMC, 4. With both hands, lift up on the center Oldsmobile and Buick mid-sized utilities, defogger outlet vent until you hear a the windshield wiper/washer may not small pop or the assembly returns to shut off, or may have other issues. the seated position. The primary concern is that the wiper 5. Keep pressure applied to the center motor or washer pump will not turn off. defogger outlet vent and follow it These and other customer concerns have downward until you reach a void been isolated to the control module. between the center defogger outlet Verify the concern and replace the vent and the HVAC plenum. wiper control module only, not the entire 6. Cut a piece of stiff packing foam into a motor assembly. wedge approximately 2 1/2 inches thick, Wedge between defogger and plenum - Thanks to Dino Poulos by 3 inches long, by 2 inches wide.

6 TACTips — from page 6

Sliding Side Door Operation Low or Completely The sliding door may be hard to open or will not Discharged Battery open from the inside door handle on some 2003- Owners of some 2004-05 Cadillac 05 Chevrolet Express and GMC Savana vans. XLRs and 2005 Chevrolet Corvettes may The lock rod may not be adjusted correctly, comment that the battery has a low and can make hard contact with a gold-colored charge or is completely discharged at bracket on the latch assembly. This can make the times. sliding door hard to open or cause the lock rod to If a cause can not be located with nor- become disconnected from the retaining clip on mal diagnosis, check with the customer the latch assembly. or the sales department to determine if The lock rod has a threaded end that snaps into a yellow retaining clip on the the vehicle is equipped with an aftermar- latch assembly. When the lock rod is installed into the yellow retaining clip, the ket security system. These systems use exposed threads on the rod should be just about equal on both sides of the retain- a small transmitter or GPS locator that is ing clip. After the lock rod is reattached to the yellow retaining clip, operate the hidden in the vehicle and is usually inside door handle and make sure the lock rod does not make hard contact with unknown to the technician. The transmit- the gold colored bracket on the latch assembly and that the door opens properly. ter is typically installed in the hot-at-all- - Thanks to Ron Erman times dome lamp circuit and prevents the Body Control Module (BCM) from entering the sleep mode. Power Door Locks Plastic Wheel Nut - Thanks to Paul Radzwilowicz Inoperative Caps On the 2005 Chevrolet Equinox, Owners of some 2005 Chevrolet the power door locks may be inoper- Silverado and GMC Sierra trucks may Rear Cargo Cover ative and the 20 amp DR LCK fuse comment that the plastic wheel nut Opening is open. caps are coming loose and/or falling off. The owner’s manual for the 2003 - 05 Inspect the wire harness in both This may occur if the plastic wheel nut Chevrolet SSR states that up to 4 key fobs front doors for chafing on the front caps get hot from excessive brake use; can be programmed. The 3rd and 4th key of the window regulator. Repair the i.e., going down hill, towing, hauling, etc. fobs programmed will lock and unlock wire harness as needed and reroute To correct this concern, replace only the doors and the panic button will func- to prevent any further chafing. the plastic nut caps with p/n 9596657. tion correctly. But the 3rd and 4th key - Thanks to Ron Erman The new caps are made of a more fobs will not open the rear cargo cover. heat-resistant material and are less This is normal operation of the remote susceptible to heat distortion. keyless entry system. Do not make any The original caps are black. The new repair attempts for this concern. False DTC B0595 nut caps are dark gray. All nut caps on - Thanks to Ron Erman For 2004 - 05 Malibu/Malibu Maxx the vehicle must be replaced (24 nut and 2005 G6, a false DTC B0595 is caps on 6-bolt vehicles and 32 nut caps being set in the BCM. DTC B0595 on 8-bolt vehicles). cannot be erased. Do not replace Snap the old (black) nut caps out of Ignition Key the BCM. When perfoming any the wheel covers, and snap the new Programming functions on a BCM, you must use (dark gray) nut caps into place. When Tech 2 version 25.002 (minimum). installing the wheel covers on the vehi- When adding or replacing an ignition IMPORTANT: This code has no cle, refer to bulletin 03-03-10-002A for key on a Cadillac CTS or SRX, you may effect on the vehicle. DO NOT the correct procedure for hand tighten- not be able to program the replacement replace any modules for this code. ing the nut caps. key to the vehicle. This will result in a no-crank no-start condition or a vehicle - Thanks to John Mason - Thanks to Jim Will that starts and runs with the security light on when using the new key. This may be accompanied by a DTC B3976 Instrument Pointer Position and/or a DTC B3031. On some 2005 Chevrolet Cobalts drops, the IPC will reset. Upon exiting Some replacement keys have been and Pontiac Pursuits, the instrument reset, the IPC will move the speedometer produced without configuring the panel gauges may be inoperative. The pointer by 10°. Each time the IPC resets, transponder in the key head. If you are speedometer pointer will appear frozen the speedometer pointer moves an addi- attempting to add or replace a key and at an offset position of 10° to 340°. In tional 10°, up to 340° total. Once the bat- you experience this symptom, obtain addition, the fuel and tachometer point- tery voltage begins to rise, the fuel and another replacement key and follow the ers may appear offset by 10°. tachometer pointers will move up 10°. published SI procedures to program. An IPC software issue may cause the This condition can be corrected by TIP: You may need to try several described condition, when system volt- disconnecting the battery or the cluster replacement keys before you get one age drops as result of a slow drain. This fuse. Do not replace the IPC. Service that will work. The manufacturing may occur due to an abnormally high par- software for the IPC is expected to be process is being modified to correct this asitic draw or the ignition switch being available at the end May 2005. concern as soon as possible. left on for long periods. As system voltage - Thanks to John Mason - Thanks to David Wells

7 Car Issues – Fix It Right the First Time (new issues in bold)

Reference Model Year(s) Vehicle Line(s) / Condition Do This Don’t Do This Information / Bulletin

2003-04 CTS – DTC C0450 or C1241 Set, Service Replace only VES solenoid. Don’t replace entire steering gear. 03-02-36-001A Steering System Message On 2003-04 Cavalier, Sunfire – Difficult to Adjust Replace foam delaminated from mode Don’t replace HVAC control head, 03-01-38-005B HVAC Control Head Mode Dial door, causing bind. module or cables unless damaged. 2002-03 Impala – Snap/Clunk When Window Replace glass run channel with Don’t replace front door window regulator, 03-08-64-034 is Rolled to Full Up Position revised P/N. door glass or align door glass for snapping noise when window reaches full up position. 2003-04 Cavalier, Sunfire – Noisy A/C Inspect for ground-out conditions that can Don’t replace A/C compressor for excessive 03-01-38-012A Compressor cause A/C compressor noise complaints. noise without inspecting for ground-outs. 2005 Equinox LT/LS (AWD Only) – Moan, Replace RDM coupling (clutch pack) Don’t replace complete rear drive 04-04-20-004 Bind or Growl Coming from Rear with proper sealers. Fill with Versatrak module. during Low Speed Parking Lot Turns fluid 2005 Cobalt/Pursuit (Built Before January 17, Recalibrate ECM with updated Don’t replace fuel module, fuel level 05-08-49-002A 2005) – Fuel Gauge May Not Go calibration, version 1.75. sensor assembly or fuel gauge. Completely to Full 2002-05 Cars and Trucks – Multiple Driveability Clean fuel injectors as described Don’t replace fuel injectors. 03-06-04-030A Symptoms/Clogged Fuel Injectors in Bulletin. 2004 Grand Prix – Steering, Suspension or Install new two-piece sleeve and Don’t replace steering gear or cradle. 03-02-32-048A Cradle Click Noise spacer to steering gear mounts. 2000-03 Century, Regal, Lumina, Impala, Monte Replace upper intake manifold Don’t replace upper intake manifold 03-06-01-016 Carlo, Grand Prix, Intrigue with 3.8L gasket only. assembly for coolant leak. L36 Engine – Coolant Leak 1999-2004 All Cars and Trucks – Brake Warranty, Issue One: Refinish brake rotor. Issue One: Don’t replace brake rotors. 00-05-22-002D Service and Procedures Issue Two: Measure for LRO Issue Two: Don’t measure for LRO

Truck Issues – Fix It Right the First Time (new issues in bold)

Reference Model Year(s) Vehicle Line(s) / Condition Do This Don’t Do This Information / Bulletin 2003-2005 Full Size Pickups and Utilities – Rear Replace RSA. Don’t replace console. 03-08-44-018B Seat Audio and/or Rear HVAC Controls Inoperative 2004-2005 Midsize and Fullsize Pickups and Load new software calibration. Don’t exchange or replace radio. 04-08-44-020A Utilities – CD Issues 2002-05 Tahoe, Suburban, All Yukons, All Replace heat shield. Don’t replace exhaust system. 03-06-05-008B Escalades, Avalanche, H2 – Exhaust Pop/Ping Noise 2003-05 Full Size Pickups and Utilities – Snap/ Use the procedure found in Service Don’t replace crossmember. 03-08-61-002D Popping Noise from Front of Vehicle Bulletin. 2004 Tahoe, Suburban, Silverado, Yukon, Yukon XL, Re-flash passenger door module. Don’t replace passenger door 04-08-52-005 Sierra, Escalade, Escalade EXT, Escalade ESV, H2 module. – Passenger Door Module and RKE Inoperative 2001-03 Fullsize Pickups – Injector Use Corporate Bulletin 04-06-04-007A for Don’t replace 8 injectors for any complaint Special Policy Replacement for High Flow Rates injectors with high fuel return rates. Use other than high fuel return rates. All 04039 Special Policy 04039 for all 01-02 vehicles. other injector failures are fix as failed. 2004-05 All Cars and Trucks – State-of-Charge Check battery’s state-of-charge per revised Don’t remove and replace battery. 02-06-03-009A Upon Delivery of a New Vehicle PDI procedure using J42000 or J42000-EU.

2002-04 Fullsize and Midsize Pickups and Utilities When submitting claims for reprogramming Don’t use K5364, which is for reprogram- 02-04-21-006D – Labor Operation Assignments for an electronic module, use correct labor oper- ming a transmission control module 02-06-04-057D Control Module Reprogramming ation that reflects module being programmed. (TCM), when reprogramming a TCCM. 2002-04 Chevrolet Avalanche and Cadillac Thoroughly clean, dry and treat Don’t replace cargo covers for this 04-08-111-001B Escalade EXT – Cargo Covers and components with “Armor-dillo.” condition. Cladding Faded or Stained 2001-04 Fullsize Pickups and Utilities – Servicing Replace individual parts as needed. Don’t replace complete mirror 03-08-64-028 Wide Load Mirrors (RPO_DPF) assembly.

Know-How 10290.07D Emerging Issues July 14, 2005, 9:30 AM and 12:30 PM Eastern Time Broadcasts New Model Features and Stay tuned! These programs will return soon. for Technology Close-Up seminars Check the Service Know-How section of the GM Training July website (www.gmtraining.com) for more details. – Thanks to Tracy Rozman 8