Question about 2003 Cadillac CTS

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Oil leak crank seal - 2003 Cadillac CTS

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Front main seal is a bit easier than the rear main seal to repair. For the front one you have to take all the belts off and then take the crankshaft pulley off. There will be a bolt in the center of the pulley that will have lots of torque holding it in. If space is available, you can use an impact gun to loosen it. I don't remember if the pulley slides off or you need a "harmonic balancer" puller to take it off. The seal is pressed into the front cover and can be replaced without taking it off. Inspect the polished part of the pulley where it rides on the seal for any wear. There are "wear sleeves" available to fix that. rear main seal involves the removal of the transmission.

Posted on Mar 14, 2011

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Posted on Jan 02, 2017

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Dear Sir,
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