Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
Important: Before removing the timing chain, measure the distance between the hole in the bracket and the unworn surface of the timing chain tensioner shoe. If the distance between the hole and the unworn surface of the timing chain tensioner shoe is more that 8mm (0.314) , replace the tensioner, timing chain, and both sprockets. If the wear does not exceed this specification, you can replace the tensioner without replacing the chain.
Remove the timing chain tensioner bolts.