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I bought and original GM from gmpartsclub. According to my VIN PN are 12684832, 12672484, 12672483. I just want to be sure...
 

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Discussion Starter #4
Guys how to check if the timing was done correctly after timing chain replace? You will not be able to check correct timing on markings on the chains (maybe after 100x or 1000x yes :)). I saw that there is something like go to TDC on piston 1 and then rotate clokwise unitil piston is lower down by 2mm and after that must fit camshaft holders on the end of the camshafts?
 
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