 
				
	| 2011 GMC Sierra 2500 HD SLE 6.6L MIL Lamp on Truck has codes P2202 and P2209. Should I just replace the #1 NOx a upstream sensor or are there other diagnostic checks to try? (My brother's truck) 
                        
                            FIX posted 7/26/2016
                               
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| VIN | 1GT220C86B | 
| Engine | 6.6 L / 8 cyl / DIESEL | 
| Trans | 6-speed Automatic (Electronic) | 
| Delivery | Fuel Injection | 
| Emissions | OBD-II Compliant | 
| Symptoms | MIL Lamp On | 
| Occurs | Always | 
Trouble Codes
| P2202 | Nox sensor Bank 1 Ckt Low Input | 
| P2209 | ABS CAN Message Missing / Incorrect | 
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             Vehicle Data
 Vehicle Data
                2011 GMC Sierra 2500 HD SLE
| VIN | 1GT220C86B | 
| Engine | 6.6 L / 8 cyl / DIESEL | 
| Trans | 6-speed Automatic (Electronic) | 
| Delivery | Fuel Injection | 
| Emissions | OBD-II Compliant | 
| Symptoms | MIL Lamp On | 
| Occurs | Always | 
Trouble Codes
| P2202 | Nox sensor Bank 1 Ckt Low Input | 
| P2209 | ABS CAN Message Missing / Incorrect | 
 3 Replies Received
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