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	 2011 GMC Yukon XL 1500 Denali 6.2L MIL Lamp on 
		
		On scanner, compare crank active counter to cam active counter. Idle in park, crank active counter is erratic. Whereas, cam active counter consistently counts up to 250 at idle in park. However, in drive under light load in the shop, the crank active count... 
                        
                            FIX posted 7/1/2021
                             
                 
                            
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| VIN | 1GKS2MEF3B | 
| Engine | 6.2 L / 8 cyl / FLEX | 
| Trans | 6-speed Automatic (Electronic) | 
| Delivery | Fuel Injection | 
| Emissions | OBD-II Compliant | 
| Symptoms | MIL Lamp On | 
| Occurs | Hot, Intermittently | 
Trouble Codes
| P0336 | CKP Sensor 1 Circuit Intermittent Signal | 
| P0449 | PCM Internal Fault | 
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 Vehicle Data
                2011 GMC Yukon XL 1500 Denali
| VIN | 1GKS2MEF3B | 
| Engine | 6.2 L / 8 cyl / FLEX | 
| Trans | 6-speed Automatic (Electronic) | 
| Delivery | Fuel Injection | 
| Emissions | OBD-II Compliant | 
| Symptoms | MIL Lamp On | 
| Occurs | Hot, Intermittently | 
Trouble Codes
| P0336 | CKP Sensor 1 Circuit Intermittent Signal | 
| P0449 | PCM Internal Fault | 
                            
5 Replies Received
          5 Replies Received
          
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