GM Service Manual Online
For 1990-2009 cars only
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Object Number: 178312  Size: SH
  • Clean the oil pan mating surface (3).
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  • Clean the oil pan. Remove all the sludge and the oil deposits.
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  • Inspect the threads for the engine oil drain plug (6).
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  • Inspect the oil pan for cracking near the pan rail.
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  • Inspect the oil pan for cracking resulting from impact or flying road debris.
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  • Repair or replace the oil pan as necessary.