#03-00-89-010: Info - Bulletins Released Week of April 14, 2003 and Car and Truck Fix It Right the First Time Issues - (Apr 24, 2003)

Subject: Bulletins Released Week of April 14, 2003 and Car and Truck "Fix It Right the First Time" Issues

Models: 2004 and Prior Passenger Cars and Trucks 2004 and Prior H2

Bulletins Released Week of April 14, 2003 Bulletin Number Subject Summary Models General Information Bulletin lists the GM 2004 and Prior Corrosion Protection for Recommended Product 03-00-89- Passenger Cars and Dealer Installed Accessories for preventing corrosion 008 Trucks; 2004 and Prior Fastened to Metal Panels in fastener to panel HUMMER H2 interface holes. To assure adequate Recommended Idler Arm lubrication, the grease 03-00-90- Grease Fitting Due to Limited fitting needs to be 2003 HUMMER H2 001A Access replaced with a 90° style fitting. HVAC An internal tolerance Knocking Sound from A/C stack-up in the 03-01-39- 1997-2001 Compressor (Replace compressor may be the 005 Catera Compressor) cause of the knocking sound. Suspension 1998-2003 Park Avenue, Park Avenue Ultra; 2000-2003 Buick Diagnosis and repair LeSabre; 1998-2003 Shake/Vibration in Steering procedures for vehicles Cadillac Seville (SLS, Wheel, Floor, Seat at experiencing 00-03-10- STS); 2000-2003 Highway Speeds on Smooth shake/vibration while 007E Cadillac DeVille (DTS Roads (Diagnose/Balance driving at highways only); 2001-2003 Tires/Wheels) speeds on smooth Aurora; roads. 2000-2003 Bonneville (17" Tires Only) Driveline/Axle 4WD Light, 4WD Inoperative, DTCs C0327, P0836, P0500 2003 (Replace Encoder Motor Repair procedures for Avalanche, Silverado, 03-04-21- Sensor, Reprogram TCCM, inoperative 4WD/4WD Suburban, Tahoe; 2003 001A Inspect Front Drive Axle light set. GMC Sierra, Yukon, Engagement Sleeve for Yukon XL Damage/Repair if Necessary) Engine/Propulsion System 2002-2003 , Escalade EXT; 2000-2003 , Suburban; Exhaust/Muffler Heat Shield The separation of the 2002-2003 Chevrolet 02-06-05- Rattle, Popping Noise Under muffler heat shield from Avalanche; 2000-2003 005B Vehicle (Install Heat Shield the muffler may cause a GMC Denali; Denali XL, Retaining Straps on Muffler) rattle under the vehicle. Sierra, Yukon XL, 2003 HUMMER H2 With 5.3L or 6.0L Gas Engine (Except 1500 Series Models) Advanced Service A "jingle" type noise Information - "Jingle" Type may be heard coming 03-06-05- 2002-2003 Chevrolet Noise Coming from Exhaust from the exhaust 005 Corvette System (Fix Not Yet system - most often on Available) a deceleration. Transmission/Transaxle 2004 and Prior Passenger Cars and This bulletin assists in Light Duty Trucks; identifying 2004 Chevrolet and 03-07-29- Manual Transmission characteristics of GMC Medium Duty 004 Operating Characteristics manual transmissions Trucks; 2004 Isuzu that repair attempts will Medium Duty Trucks not change. With Manual Transmissions Transmission Slips, Delayed Replace the torque Engagement, Cold converter relief spring 2001-2003 Chevrolet Hesitation, Intermittent, Poor and lube the regulator Silverado 2500/3500 Performance, Power, Shift, spring in the front Series Models; 2001- DTCs P0701, P0709, P0711, support assembly to 03-07-30- 2003 GMC Sierra P0713, P0841, P0843, eliminate transmission 011 2500/3500 Series P0847, P0870, P0872, or slips, delayed Models With Allison® P0875 (Replace Torque engagement or cold 1000 Series Converter Relief Spring and hesitation on the first Transmission Lube Regulator Spring in start-up after sitting for Front Support) a period of time. Body & Accessories The headlights may be 03-08-42- Headlight Aim Too High aimed too high and 2003 HUMMER H2 003 (Adjust Aim) need to be properly aimed. 2002-2003 Buick Install a capacitor into Rendezvous; 2001- the rear differential Static Noise Heard in Radio 2003 Chevrolet clutch check valve 02-08-44- Speakers (Install Capacitor Venture; 2001-2003 circuit to eliminate 022A into Rear Differential Clutch Oldsmobile Silhouette; consistent static noise Check Valve Circuit) 2001-2003 Pontiac heard in the radio Aztek, Montana With All speakers. Wheel Drive The I/P ash tray latch is 03-08-49- I/P Ash Tray Latch Available now available for 2003 Cadillac CTS 004 for Service Use service as a separate part. 2001-2003 Buick Century, Regal; 2002- 2003 Buick Rendezvous; 2001- The remote keyless 2003 Chevrolet 03-08-52- Key Fob Eyelet Breaking entry, or key fob, will Venture; 2001-2002 003 (Replace Key Fob) need to be replaced if Oldsmobile Intrigue; the eyelet breaks off. 2001-2003 Oldsmobile Silhouette; 2001-2003 Pontiac Aztek, Grand Prix, Montana A gap between the inner and outer sheet 03-08-58- Wind Whistle/Windrush (Seal metal on either front 2003 HUMMER H2 001 Front Door Sheet Metal) door may cause this noise. The rear radio speakers, mounted in 2001-2003 Chevrolet the rear liftgate, may Venture; 2001-2003 03-08-59- Rattle in Liftgate Area While have a loose fit and Oldsmobile Silhouette; 002 Driving (Install Insulator) require an insulator in 2001-2003 Pontiac order to eliminate the Montana rattle noise. Customers who have 2002 Chevrolet Door Locks Delayed Locking had the BCM replaced TrailBlazer, TrailBlazer 03-08-64- Feature Added with Body may notice a change in EXT; 2002 GMC , 014 Control Module (BCM) how their door locks Envoy XL; 2002 Replacement function. Oldsmobile Bravada Restraints Advanced Service If the child comfort clips 2002-2003 Chevrolet Information - Child Comfort comes off the seat or Venture; 2002-2003 03-09-50- Clip Comes Off From Seat off the elastic cord, a Oldsmobile Silhouette; 001 (Sew New Clip Into Seat new one will need to be 2002-2003 Pontiac Cover) sewed into place. Montana Field Product Reminder -- Car Issues -- Fix It Right the First Time Model Year Don't Do Reference (s) Vehicle Line(s) Do This This Information/Bulletin Replace entire Replace 2003 CTS overhead VME VSSM Tech Link bulb console 1999- Purge air Tracker Replace lifters 00-06-01-006B 2004 from lifters Replace sensor Fuel 2000- Cavalier/Sunfire/Grand card for sender/pump 01-06-04-008D 2003 Am/Alero/Malibu fuel gauge assembly - accuracy issue Use floor Do not weld due 2000- pan kit to floor pan DeVille 99-06-03-009A 2003 w/adhesive corrosion/battery (no weld) leaks Replace Door glass 1999- Grand Am/Alero sash clip assembly for 01-08-64-018 2003 only broken clips Turn rotor 00-05-23-002 1997- and brake Brake rotor for Grand Am/Alero/Malibu 2003 align pulsation 01-05-23-001 (Know How procedure Video #15040.01B) Refer to specific Do not use 1997- bulletin general service Venture/Montana/Silhouette 01-08-57-006 2003 procedures manual for diagnostics diagnosis Normal in HVAC control 1997- full heat or Century/Regal head for "Auto" 99-01-39-007B 2003 cold light setting Install 1999- Carpet replaced Century/Regal plastic 01-08-110-004 2003 for appearance clip/guide Replace TCC PWM All cars with 4T56E and (pulse Replace 2003 02-07-30-039A 4T80E width trans/valve body modulated) solenoid Field Product Reminder -- Truck Issues -- Fix It Right the First Time Model Year Vehicle Reference (s) Line(s) Do This Don't Do This Information/Bulletin C/K Fullsize Replace DL3 03-08-64-010 and parts 2003 Pickups and Cycle mirror power folding restriction Utilities mirror Replace throttle Clean throttle body for idle C/K Fullsize 1999- body adjust instability or 02-06-04-054B and parts Pickups and 2002 blade and increased restriction Utilities insert plugs. accelerator pedal effort. C/K, G (Silverado, Sierra, Reflash for Replace ABS 2003 TIS 2000:3.0 & Service VME Savana, code C0550 module Express > 8600 GVW) Envoy, Envoy Replace check Air suspension 2002- XL, Bravada valve service compressor 02-03-99-001 2003 with G67 kit replacement TrailBlazer, Replace mirror TrailBlazer 02-08-64-008 2002- actuator and OSRVM EXT, Envoy, 2003 reprogram replacements Envoy XL, 02-08-64-021 module Bravada C/K Fullsize Install clip or 2000- Sunroof Pickups and mechanism 02-08-67-009 2002 replacement Utilities kits

C/K Fullsize Lube shaft Replace of I-shaft 00-02-35-003B 1999- Pickups and 2003 Utilities TrailBlazer, Rear axle vibration 2002- Envoy, Replace rear boom noise that 02-03-09-002A 2003 Bravada coil springs can result in without G67 vehicle repurchase 02-08-62-001 2002- TrailBlazer, Front fascia Repair fascia 2003 TrailBlazer EXT replacement 02-08-62-004 TrailBlazer, Rear tail lamp TrailBlazer Replace tail 2002- assembly Service VME to use service EXT, Envoy, lamp circuit 2003 replacement for part, listed in GMSPO catalog Envoy XL, board brake light Bravada

GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.