Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Case: Service and Repair


VALVE BODY COVER 3T40 (125C)

Side Cover And Control Valve View:






REMOVE OR DISCONNECT
1. Raise vehicle and suitably support.
2. Left tire and wheel assembly.
3. Left splash shield.
4. Valve body cover to transaxle bolts.




INSPECT
^ Bolts

INSTALL OR CONNECT
1. Valve body cover with a new gasket and bolts.

Valve Body Cover:




NOTE: It is necessary to use GM thread locker (P/N 12345382) or equivalent non-locking sealant to reduce the potential for fluid leaks on the indicated bolts.

2. Left splash shield.
3. Left tire and wheel assembly.
4. Lower vehicle.

ADJUST
^ Oil level.