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	 2015 Chevrolet Express 3500 LS 6.6L Excessive Emissions, MIL Lamp on, Derated 
		
		came in with a service after treatment message and an MIL on. my tech said it needed the upstream nox and a def tank. replaced both and then the downstream nox and codes keep coming back starting with u029d and then after a few key starts the rest. We have... 
                        
                            FIX posted 5/12/2021
                             
                 
                            
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          Message Closed 
	   
	   
	   
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| VIN | 1GB3G2CL7F | 
| Engine | 6.6 L / 8 cyl / DIESEL | 
| Trans | 6-speed Automatic (Electronic) | 
| Delivery | Fuel Injection | 
| Emissions | OBD-II Compliant | 
| Symptoms | Excessive Emissions, MIL Lamp on, Derated | 
| Occurs | Always | 
Trouble Codes
| P205D | reductant temperature sensor high | 
| U10E0 | lost com with def control module | 
| U29D0 | Lost com with nox sensor 1 | 
Message Closed
            
            
 Vehicle Data
                2015 Chevrolet Express 3500 LS
| VIN | 1GB3G2CL7F | 
| Engine | 6.6 L / 8 cyl / DIESEL | 
| Trans | 6-speed Automatic (Electronic) | 
| Delivery | Fuel Injection | 
| Emissions | OBD-II Compliant | 
| Symptoms | Excessive Emissions, MIL Lamp on, Derated | 
| Occurs | Always | 
Trouble Codes
| P205D | reductant temperature sensor high | 
| U10E0 | lost com with def control module | 
| U29D0 | Lost com with nox sensor 1 | 
                            
6 Replies Received
          6 Replies Received
          
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