Engine and engine cooling: exhaust system
Chevrolet technical service bulletin PIP5110C for 2011, 2014 Chevrolet Silverado 1500, 2014 GMC Sierra 1500 and 2011-2015 Chevrolet Silverado 2500 and others.
- Bulletin number
- PIP5110C
- Component
- Engine and engine cooling: exhaust system
- Summary
- This Preliminary Information communication provides information to the technician of additional information while diagnosing a diagnostic trouble code P0420. Check for a possible leak in the exhaust system behind the bank one number 2 oxygen sensor. If a leak is found or there is an aftermarket utility bed or trailer hitch installed. Check for a minimum clearance of 1.5 to 2 inches of the exhaust system. Install a new clamp and torque it to 40.5 foot pounds.
Owners of these vehicles have filed 400 complaints in the engine category.
Vehicles covered
- Chevrolet Silverado 1500 2011, 2014 20112014
- GMC Sierra 1500 2014 2014
- Chevrolet Silverado 2500 2011-2015 20112012201320142015
- GMC Sierra 2500 2011-2015 20112012201320142015
- Chevrolet Silverado 3500 2013 2013
- Chevrolet Express 2011-2015 20112012201320142015
- GMC Savana 2011-2015 20112012201320142015
- GMC Sierra Denali 2011-2013, 2015 2011201220132015
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