Document ID: 2361286 Page 1 of 4

Document ID: 2361286 #06-07-30-023C: 4T65E Transmission 1-2 Shift Shudder at Light to Moderate Acceleration (Replace Complete Second Clutch Assembly) - (Oct 15, 2009)

Subject: 4T65E Transmission 1-2 Shift Shudder at Light to Moderate Acceleration (Replace Complete Second Clutch Assembly)

Models: 2001-2004 Regal 2001-2005 , LeSabre 2002-2007 2005-2007 Buick Terraza, LaCrosse, Allure (Canada Only) 2006-2007 2001-2005 Venture 2001-2007 Chevrolet Impala, Monte Carlo 2005-2007 2006-2007 Chevrolet Malibu SS, Malibu Maxx SS 2001-2002 Oldsmobile Intrigue 2001-2003 Oldsmobile Aurora 2001-2004 2001-2005 Aztek, Bonneville, Montana 2001-2007 Pontiac Grand Prix 2005-2007 SV6 2006-2007 Pontiac G6 GTP 2005-2007 with 4T65E Automatic Transmission (RPOs MN3, MN7, M15, M76)

This bulletin is being revised to update parts information. Please discard Corporate Bulletin Number 06-07-30-023B (Section 07 -- Transmission/Transaxle).

Condition

Some customers may comment on a 1-2 shift shudder at light to moderate acceleration. Typically, the throttle plate angle parameter is 12-20% at time of condition with vehicle speed of approximately 24-40 km/h (15-25 mph). The customer may describe the condition as slip or delayed shift into second.

Correction

© 2009 Corporation. All rights reserved.

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Replace the complete second clutch assembly with service kit, P/N 24240561. Refer to the GM Unit Repair Service Manual for the year and model of the vehicle being serviced for the 2nd Clutch service procedure.

This service kit contains: Second Clutch Housing Fluid Seal Rings (613), a Second Clutch Assembly (617), a Case Cover (Channel Plate) Upper Gasket (430), and a Case Cover (Channel Plate) Lower Gasket (429). In addition to the content of this service kit, other gaskets not included in this service kit will also be needed to complete the repair - a Case Cover Lower Gasket (429), and a Case Cover Upper Gasket (430). These gaskets can be obtained by ordering gasket kit 24206391.

Be sure to use ONLY the Second Clutch Assembly and Second Clutch Housing Fluid Seal Rings provided in this service kit. DISCARD the Second Clutch Assembly and Second Clutch Housing Fluid Seal Rings removed from the transmission being serviced.

Disassemble ONLY the Oil Pump Assembly from the Case Cover (Complete). DO NOT disassemble the Control Valve Body from the Case Cover. Remove ONLY the Case Cover-to-Case bolts to remove the Case Cover and Valve Body from Transmission Case AS AN ASSEMBLY . To access all Case Cover-to-Case bolts, it is necessary to remove the Pressure Control Solenoid Valve Assembly (322), and 1-2 & 3-4 Shift Solenoid Valve Assemblies (315A, 315B).

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Important: This service kit does not contain the gaskets and/or seals necessary to service the Case Cover and Control Valve Body, if they are disassembled from each other. Please review the graphic above for Pump Body-to-Case (230), Pump Cover-to-Case (231), Control Valve Body-to- Case (377), Manual Shift Detent Assembly-to-Case (805), and Case Cover-to-Case (433, 434, 435, 436, 374, 379, 380, 384) bolt locations.

Notice: Failure to use the parts in the service kit as instructed will cause improper function, and possible transmission distress.

Parts Information

Part Number Description Qty 24206391 Gasket Kit, Case Cover 1 24240561 Clutch Kit, 2nd 1 88861003 (1 qt - US) Dexron VI Auto Trans Fluid 10 88861004 (1 L - Canada)

Warranty Information

For vehicles repaired under warranty, use:

Labor Operation Description Labor Time K7531 Clutch, Second - Replace Use Published Labor Operation Time

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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 WE SUPPORT proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how VOLUNTARY to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or TECHNICIAN that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information. CERTIFICATION

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