1999 GMC Sierra clicking

1999 GMC SIERRA
195,000 MILES • V8 • 4WD • AUTOMATIC
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TUNACAN
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while driving last night I noticed my oil pressure drop and heard a clicking noise. I pulled into gas station and checked oil it was down a qaurt so I fill up and start it clicking goes away so I drive about 110 miles and pressure drops again and same noise. This time it goes away when I slow down and drive in the 30mph zone??
Sep 27, 2008 at 6:39 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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