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2012 Chevrolet Silverado 2500 HD LTZ 6.6L Poor Def.quality
Posted to GM Driveability on 5/31/2018 11 Replies

will not let me reset def. quality because #4 egt is at 1832 telling me that the reductant inhibit reason is the nox cat. [...] egt #3 with #4 egt read ambient air [...] wiring back to ecm no [...] seems to be bad, am I missing something?

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  Related Documents & Media  2012 Chevrolet Silverado 2500 HD LTZ

 
Message Closed w/Summary

car Vehicle Data

2012 Chevrolet Silverado 2500 HD LTZ

VIN 1GC2KYE87C
Engine6.6 L / 8 cyl / DIESEL
Trans6-speed Automatic (Electronic)
DeliveryFuel Injection / diesel
EmissionsOBD-II Compliant
SymptomsPoor Def.quality
Message Closed w/Summary

car Vehicle Data

2012 Chevrolet Silverado 2500 HD LTZ

VIN 1GC2KYE87C
Engine6.6 L / 8 cyl / DIESEL
Trans6-speed Automatic (Electronic)
DeliveryFuel Injection / diesel
EmissionsOBD-II Compliant
SymptomsPoor Def.quality