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99 GMC Sonoma 4.3 need timing marks


the marks are on the pulleys

the marks are on the pulleys for crank and cam shafts and you will need to put engine on tdc to see if they are where they should be. go to autozone. register - add vehicle and go to repair for step by step with pics.

Camshaft sprocket timing

Camshaft sprocket timing marks points straight down and the crankshaft timing mark point straight up. They should be pointing directly toward each other when the #1 piston is at TDC.


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