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2. Remove all sealing material from the oil pan rails. 3. Inspect the oil pan sealing surfaces for nicks or damage. Remove any minor nicks with a fine flat file. 4. Inspect the threads in the oil drain plug hole. 5. Replace the oil pan if necessary. ENGINE FRONT COVER CLEANING AND INSPECTION
2007 Hummer H3 2007 ENGINE Engine Mechanical - 3.7L - H3
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