LaCrosse V6-3.6L (2007)
Valve Body: All Technical Service Bulletins
A/T - Harsh Shifts/Slipping/DTCs P0741/P0742/P0757/P842
INFORMATION
Bulletin No.: 08-07-30-002A
Date: March 12, 2008
Subject:
Information On 4T65-E MN7, M15 and M76 Front Wheel Drive Automatic Transmission Valve Body Reconditioning, DTCs P0741, P0742, P0757,
P842, Harsh Shifts or Slips
Models
Supercede:
This bulletin is being updated to include Related Service Document information. Please discard 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 body reconditioning instructions and new illustrations to
simplify reassembly of the valve body.
Related Service Document
Corporate Bulletin Number 02-07-30-013 : Incorrect Transmission Shifts, Poor Engine Performance, 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 is necessary to verify movement of valves.
Inspection Procedure
1.
Using the exploded views below inspect each bore for freedom of valve(s) movement and evidence of debris. Pay particular attention to those
valves related to the customer's concern.
2.
Verify movement of the valves in their normal installed position. Valves may become restricted during removal or installation. This is normal due
to small tolerances between the valves and bores.
3.
If a valve is restricted and cannot be corrected by cleaning the valve and bore replace the valve 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 as the valve body bolts are tightened and damage may occur.
