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Chevrolet TSB #PIP5110
2011 Chevrolet Silverado 3500
TSB Document:
Affected Component: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM
- Summary
- This Preliminary Information communication provides information to the technician about vehicles that have a Service Engine Soon Malfunction Indicator Lamp on. Technician will find Diagnostic Trouble Code P0420. Technician will need to follow published Service Information diagnostics. Technician will check for a possible leak in the exhaust system behind the bank 1 sensor 2 O2 sensor. Technician will need to reposition the exhaust clamp or replace with a wider band clamp.
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