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October 2, 2015 Service bulletin

Engine and engine cooling: exhaust system

Chevrolet technical service bulletin PI1214B for 2010-2016 Chevrolet Silverado 1500, 2010-2016 GMC Sierra 1500 and 2010-2016 Chevrolet Silverado 2500 and others.

Bulletin number
PI1214B
Component
Engine and engine cooling: exhaust system
Summary
This preliminary informational bulletin provides service personnel with a guide to determine which SI documents and scan tool parameters to reference when encountering an: Exhaust Fluid Quality Poor message displayed, and a Reductant Fluid Quality Test status that will Pass, Time Out, Fail or Interrupt and other DEF messages that maybe observed.

Owners of these vehicles have filed 960 complaints in the engine category.

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