Mechanics

ENGINE PULLEY NOISE

2000 GMC Sierra

Engine problem
2000 GMC Sierra 6 cyl Two Wheel Drive Automatic 236000 miles

I replaced the idler pulley but there is still bearing noise on start up then goes away after the engine is warm.
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Wildthing
January 30, 2008.



Check the a/c tension pulley. Hard to see from top, look under truck with plastic shield off. I tried to wd-40 a few times, but sound returned. Bought new one at the dealer.

Tiny
Gm4yrs
Feb 1, 2008.