GMC TSB #PI0235J
2011 GMC Sierra 2500
Affected Component: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM
- Summary
- This preliminary informational bulletin provides repair information to correct customer concerns of an exhaust leak or vibration/rattle noise at approximately 900 RPM, fuel smell/white smoke noted intermittently (usually after coming to a stop), and/or an oily substance noted on exhaust downpipe.