#08-07-30-002A: Information On 4T65-E MN7, M15 And M76 .

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#08-07-30-002A: Information on 4T65-E MN7, M15and M76 Front Wheel Drive Automatic TransmissionValve Body Reconditioning DTCs P0741, P0742,P0757, P0842, Harsh Shifts or Slips - (Mar 12, 2008)Subject:Information On 4T65-E MN7, M15 and M76 Front WheelDrive Automatic Transmission Valve Body Reconditioning,DTCs P0741, P0742, P0757, P842, Harsh Shifts or SlipsModels:2001-2005 Buick LeSabre, Park Avenue2002-2007 Buick Rendezvous, Rendezvous AWD2005-2007 Buick Terraza, Terraza EXT, Terraza 4WD2005-2008 Buick Allure (Canada Only), LaCrosse2006-2008 Buick Lucerne2001 Chevrolet Lumina2001-2005 Chevrolet Venture, Venture EXT, Venture 4WD2001-2007 Chevrolet Monte Carlo2001-2008 Chevrolet Impala, Lumina (Export Only)2005-2008 Chevrolet Uplander, Uplander EXT, Uplander 4WD2001-2002 Oldsmobile Intrigue2001-2003 Oldsmobile Silhouette, Silhouette EXT2004 Oldsmobile Silhouette EXT2001-2005 Pontiac Montana, Montana EXT2001-2005 Pontiac Aztek, Aztek AWD, Bonneville2001-2008 Pontiac Grand Prix2002-2005 Pontiac Montana 4WD2005-2006 Pontiac Montana SV6 (AWD)2005-2008 Pontiac Montana SV6, Montana SV6 EXT2005-2006 Saturn Relay, Relay AWD2005-2007 Saturn Relay EXTwith Hydra-Matic 4T65-E (RPOs - MN7, M15, M76) AutomaticTransmissionThis bulletin is being updated to include Related Service Document information. Pleasediscard Corporate Bulletin Number 08-07-30-002 (Section 07 -Transmission/Transaxle).The following new service information will aid technicians in providing easy to follow valve bodyreconditioning instructions and new illustrations to simplify reassembly of the valve body.Related Service DocumentCorporate Bulletin Number 02-07-30-013 : Incorrect Transmission Shifts, Poor EnginePerformance, Harsh 1-2 Upshifts, Slips 1st and Reverse, Torque Converter Clutch (TCC) Stuck

Off/On, DTCs P0757, P0741, P0742, P0730, P0756.Important: If valve body cleaning is not required, DO NOT disassemble bores unless it isnecessary to verify movement of valves.Inspection Procedure1. Using the exploded views in this bulletin, inspect each bore for freedom of valve(s)movement and evidence of debris. Pay particular attention to those valves related to thecustomer’s concern.2. Verify movement of the valves in their normal installed position. Valves may becomerestricted during removal or installation. This is normal due to small tolerances betweenthe valves and bores.3. If a valve is restricted and cannot be corrected by cleaning the valve and bore, replace thevalve body. Describe the restricted valve on the repair order.Notice: Be sure all solenoids are installed with the electrical connectors facing the non-machined(cast) side of the valve body. Otherwise, the solenoids will bind against the transmission case asthe valve body bolts are tightened and damage may occur.Disassembly/Reassembly1. If a valve is restricted by a metal burr from machining that bore, remove the valve andburr, then inspect movement in the valve’s normal position. If no other debris orrestrictions are found, reassemble the valve body and install in the transmission.2. If the valve body has been contaminated with debris from another transmissioncomponent failure, disassemble all bores for complete cleaning of all valve bodycomponents. If possible, keep individual bore parts separated for ease of reassembly. Usethe following illustrations in this bulletin for a positive identification and location ofindividual parts: Left Side Control Valve Body Assembly Right Side Control Valve Body Assembly Control Valve Body Assembly Chart, Valve Springs and Bore PlugsCaution: Use appropriate eye protection when cleaning the valve body to prevent injury.3. Using GM Brake Clean, or equivalent, in a safe and clean environment (clean aluminumpan) clean the valve body and dry it with compressed air.4. Clean individual valve body components with GM Brake Clean, or equivalent. Coat eachvalve with clean ATF and reassemble in each bore. Check each valve for free movementduring assembly of each bore.Left Side Control Valve Body Assembly

Call Out NumberDescription301Control Valve Body (Machined)302Line Boost Valve And Bushing Retainer303Line Boost Valve Bore Plug304Line Boost Valve309Reverse Boost Valve Bushing

310Reverse Boost Valve311Pressure Regulator Valve Spring Outer312Pressure Regulator Valve Inner Spring313Pressure Regulator Valve1-2, 3-4 Shift Solenoid Valve Retainer314Pressure Control Solenoid Valve RetainerTCC PWM Solenoid Valve RetainerTCC Regulator Apply Valve Bore Plug Retainer3151-2, 3-4 Shift Solenoid Assembly3171-2 Shift Valve Spring3181-2 Shift Valve320Torque Signal Regulator Valve Spring321Torque Signal Regulator Valve322Pressure Control Solenoid Valve Assembly323Line Pressure Relief Valve Spring324Line Pressure Relief Valve325Line Pressure Relief Valve Spring Retainer326TCC Regulator Apply Valve Spring327TCC Regulator Apply Valve329TCC Regulator Apply Valve Bore Plug334TCC PWM Solenoid Valve Assembly335TCC Control Valve336TCC Control Valve SpringRight Side Control Valve Body Assembly

Call Out NumberDescription301Control Valve Body (Machined)1-2, 3-4 Accumulator Valve Retainer3144-3 Manual Downshift Valve Retainer2-3 Shift Solenoid Valve Retainer3151-2, 3-4 Shift Solenoid Valve Assembly

3391-2 Accumulator Valve Bore Plug3403-4 Accumulator Valve Spring3413-4 Accumulator Valve3422-3 Accumulator Valve Bushing3432-3 Accumulator Valve Bore Plug3442-3 Accumulator Valve3452-3 Accumulator Valve Bushing3462-3 Accumulator Valve Spring3501-2 Accumulator Valve3511-2 Accumulator Valve Spring3533-2 Manual Downshift Valve Retainer3543-2 Manual Downshift Valve Bore Plug3553-2 Manual Downshift Valve Spring3563-2 Manual Downshift Valve3572-3 Shift Valve3594-3 Manual Downshift Valve Bore Plug3604-3 Manual Downshift Valve3614-3 Manual Downshift Valve Spring3623-4 Shift Valve363366367385Reverse Servo Boost Valve Bore PinForward Servo Boost Valve Bore PinReverse Servo Boost Valve SpringForward Servo Boost Valve SpringReverse Servo Boost ValveForward Servo Boost Valve2-3 Accumulator Valve Retainer1997-2000 M.Y. Only -- Right Side Control Valve Body Assembly

Call Out Number363366367DescriptionReverse Servo Boost Valve Bore PinForward Servo Boost Valve Bore PinReverse Servo Boost Valve SpringForward Servo Boost Valve SpringReverse Servo Boost Valve

Forward Servo Boost ValveValve Body Spring and Bore Plug Chart (Metric)

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

2005-2007 Saturn Relay EXT with Hydra-Matic 4T65-E (RPOs - MN7, M15, M76) Automatic . 353 3-2 Manual Downshift Valve Retainer 354 3-2 Manual Downshift Valve Bore Plug 355 3-2 Manual Downshift Valve Spring 356 3-2 Manual Downshift Valve 357 2-3 Shift Valve 359 .

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