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International Automotive Technicians Network
Re: 2015 GMC TERRAIN ENGINE TROUBLE
Posted to Technical Discussion Forum on 12/3/2022

Hi Scott

This car will have to have a new engine at this point.

I found out that the customer ran the engine 2 1/2 qts low on oil several months after timing chain work. Turns out the pcv passage in the intake is clogged. She decided not fix at that time. ... Login to read more.