GM Service Manual Online
For 1990-2009 cars only

Oil Leak At Rear Of Engine - keywords cover crank crankshaft gasket housing L76 L92 LC9 leaking LH6 LH8 LMF LMG LY2 LY5 LY6 main pan porous seal shaft

Subject:Oil Leak At Rear Of Engine

Models:2007-2008 Cadillac Escalade
2007-2008 Chevrolet Express, Silverado, Tahoe
2007-2008 GMC Savana, Sierra, Yukon
Equipped with a 4.8 5.3 6.0 or 6.2 V-8 Engine



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

Condition/Concern:

A dealer may encounter a customer concern of a engine oil leak.

Engineering is interested in rear of engine oil leaks.

Engineering would like to visit a Metro Detroit dealer that has verified a rear of engine oil leak.

Recommendation/Instructions:

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 within 2 hour drive of Metro Detroit 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.