For 1990-2009 cars

# Service Part Pump Cover Identification - keywords fluid leak pressure seal

Subject: | Service Part Pump Cover Identification

Models: | 1997-2005 GM Cars, Light Duty Trucks and Utilities

| Equipped With 4L60E 4L65E Or 4L70E (RPO - M32 Or M70) Transmission

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

### Condition/Concern:

Replacement pump cover may appear different than the original pump cover. The replacement pump casting may have a boss or a hole and plug that would accommodate a ISS (input speed sensor).

### Recommendation/Instructions:

Using a light look inside the stator support and inspect the stator support shaft sleeve. If the sleeve has a large hole and notch it CAN NOT be used in 1997-2005 transmissions. If the sleeve DOES NOT have the large hole and notch in the sleeve it CAN be used in 1997-2005 transmissions. (See photos)

In photo's below, C/O 1 represents the sleeve for an ISS equipped transmission, C/O 2 represents the sleeve for a non-ISS transmission

Important: DO NOT use ISS sleeve in non-ISS transmission

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.