Subject: | Oil Leak At Rear Of Engine |
Models: | 2007-2008 Cadillac Escalade |
2007-2008 Chevrolet Express, Silverado, Tahoe |
2007-2008 GMC Savana, Sierra, Yukon |
2008 Hummer 2 with L92 |
2008 Hummer 3 with LH8 |
Equipped with a 4.8 5.3 6.0 or 6.2 V-8 Engine |
This PI was superseded to expand search to tri-state area. Please discard PIP4321.
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.
A dealer may encounter a customer concern of an engine oil leak.
Engineering is interested in rear of engine oil leaks.
Engineering would like to visit a dealer that has verified a rear of engine oil leak.
Engineering is interested in rear cover, rear main seal, and crankshaft related oil leaks.
If a dealer has verified a rear of engine oil leak and is located in either Michigan, Indiana, or Ohio please contact engineering directly.
Engineering Contact:
Curt Danielewicz
Cell Phone 586-709-3419
If Curt does not answer, please leave a voice mail with a phone number you can be reached at. If you don't receive a call back within 4 hours order necessary parts, and continue with repairs.
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.