GM Full-Size Trucks 1988-1998 Repair Information

Body Lubrication And Maintenance

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LOCK CYLINDERS



Apply graphite lubricant sparingly through the key slot. Insert the key and operate the lock several times to be sure that the lubricant is worked into the lock cylinder.

HOOD LATCH AND HINGES



Clean the latch surfaces and apply clean engine oil to the latch pilot bolts and the spring anchor. Also lubricate the hood hinges with engine oil. Use a chassis grease to lubricate all the pivot points in the latch release mechanism.

DOOR HINGES



The gas tank filler door and truck doors should be wiped clean and lubricated with clean engine oil once a year. The door lock cylinders and latch mechanisms should be lubricated periodically with a few drops of graphite lock lubricant or a few shots of silicone spray.

BODY DRAIN HOLES



Be sure that the drain holes in the doors and rocker panels are cleared of obstruction. A small punch, screwdriver or unbent wire coat hanger can be used to clear them of any debris.

 
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