2012 Chevrolet Silverado 2500 HD LT 6.6L MIL Lamp on
Greetings techs. I'm losing weight over this one because it's eating my lunch. Pickup came in with "Service exhaust fluid system" message on Instrument panel. Scanned for codes and found P20B9 for reservoir heater circuit fault. Tested circuit both at glow plu...
FIX posted 9/29/2014
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Message Closed w/FIX
Vehicle Data2012 Chevrolet Silverado 2500 HD LT
Trouble Codes
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Message Closed w/FIX
Vehicle Data
2012 Chevrolet Silverado 2500 HD LT
VIN | 1GC1KXC8XC |
Engine | 6.6 L / 8 cyl / DIESEL |
Trans | 6-speed Automatic (Electronic) |
Delivery | Fuel Injection / Diesel |
Emissions | OBD-II Compliant |
Symptoms | MIL Lamp On |
Occurs | Always |
Trouble Codes
P20B9 | DEF Reservoir heater control circuit open or high resistance |