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	 2008 GMC Sierra 2500 HD WT 6.6L Poor Fuel Economy, p0101 
		
		P0101 sets continuously. All stock equipment. Maf reading 14-19 @ idle with egr commanded on and 35 with egr off. 
                        
                            FIX posted 3/29/2024
                             
                 
                            
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| VIN | 1GTHK23678 | 
| Engine | 6.6 L / 8 cyl / DIESEL | 
| Trans | 6-speed Automatic (Electronic) | 
| Delivery | Fuel Injection / common rail | 
| Emissions | OBD-II Compliant | 
| Symptoms | Poor Fuel Economy, P0101 | 
| Occurs | Always | 
Trouble Codes
| P0101 | Mass Airflow Sensor Range/Performance | 
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 Vehicle Data
                2008 GMC Sierra 2500 HD WT
| VIN | 1GTHK23678 | 
| Engine | 6.6 L / 8 cyl / DIESEL | 
| Trans | 6-speed Automatic (Electronic) | 
| Delivery | Fuel Injection / common rail | 
| Emissions | OBD-II Compliant | 
| Symptoms | Poor Fuel Economy, P0101 | 
| Occurs | Always | 
Trouble Codes
| P0101 | Mass Airflow Sensor Range/Performance | 
                            
9 Replies Received
          9 Replies Received
          
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