Cavalier L4-2.2L VIN F (2004)
Valve Body: All Technical Service Bulletins
A/T - DTC's P0741/P0751/P0752/P0756/P0757/P1811
Bulletin No.: 07-07-30-025
Date: October 01, 2007
INFORMATION
Subject:
Information On 4T40-E (MN4) and 4T45-E (MN5) Front Wheel Drive Automatic Transmission Valve Body Reconditioning, DTC P0741, P0742,
P0751, P0752, P0756, P0757, P1811, Harsh Shifts, Slips, No Drive, No Reverse
Models:
1997-2005 Chevrolet Cavalier
1997-2007 Chevrolet Malibu
2005-2007 Chevrolet Cobalt
2006-2007 Chevrolet Malibu Maxx, HHR
1997-1998 Oldsmobile Cutlass
1999-2004 Oldsmobile Alero
1997-2005 Pontiac Sunfire
1999-2005 Pontiac Grand Am
2005-2006 Pontiac Pursuit (Canada Only)
2005-2007 Pontiac G6
2007 Pontiac GS
2000-2005 Saturn L-Series
2005-2007 Saturn ION, VUE
2007 Saturn Aura
with Hydra-Matic(R) 4T40-E (RPO MN4) and 4T45-E (RPO MN5) Automatic Transmission
The following new service information outlined in this bulletin will aid technicians in providing easy to follow valve body reconditioning instructions
and new illustrations to simplify reassembly of the valve body. The service bulletin will also provide additional service information documents that are
related to the 4L6x transmission family.
Related Service Documents
PIP 3253B - No Move Drive or Reverse
02-07-30-039F - Firm Transmission Shifts
02-07-30-050 - Engineering Change Valve Body
If valve body cleaning is not required, Do Not disassembly bores unless it is necessary to verify movement of valves.
Inspection Procedure
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 the customer's concern.
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.
If a valve is restricted and cannot be corrected by cleaning valve and bore, then replace valve body. Describe restricted valve on repair order.
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.
Disassembly/Reassembly
If a valve is restricted by a metal burr from machining that bore, remove valve and burr, then inspect movement in the valve's normal position. If no other
debris or restrictions are found, then reassemble valve body and install in the transmission.
If the valve body has been contaminated with debris from another transmission component failure, then disassemble all bores for complete cleaning of all
valve body components. If possible keep individual bore parts separated for ease of reassembly. Use the following illustrations in this bulletin for a
