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2015 Yukon 5.3 4x4 Cold Start Noise.
Mechanic has had the truck in the shop twice. Can’t find the culprit and suggests it coming from the top end at startup due to oil flow back. I’m going crazy trying to find the noise elsewhere. No missing bolts on exhaust, can’t find any exhaust leaks, noise goes away after 30secs and a...- jay67chevy
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- Replies: 4
- Forum: Engine & Drivetrain
