how to change oil pump on 2000 Chevrolet Silverado 1500

when you first start up truck it has about 40 yo 45 lbs. of oil pressure but go about 15 to 20 miles then the pressure drops to about 15 to 20 lbs. stop for a while and it goes up to about 35 lbs.

by in Orange, TX on July 20, 2010
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