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Hello im new to this forum. Have a 07 acadia with 122165 miles. Have codes p0016-p0017.Just replaced all the chains and tensioners. Engine now runs rough at idle and stabilatrack light coming on. have taken all back apart to recheck timing marks. All marks appear to be on. What did I do wrong? Any help would be greatly appreciated.
 

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Sounds like it's out of time. Did u do the phasers (cam gears) when you replaced the chain. Its also a odd timing procedure time chains some people don't know.
 
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