 
				
	| 2007 GMC Envoy SLE 4.2L No tach When tach works cannot give any throttle If tach doesn't work runs fine Replaced crank and cam sensor twice with AC Delco sensors 
                        
                            FIX posted 3/20/2019
                               
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 | Message Closed w/FIX 
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| VIN | 1GKDT13SX7 | 
| Engine | 4.2 L / 6 cyl / GAS | 
| Trans | 4-speed Automatic (Electronic) | 
| Delivery | Fuel Injection | 
| Emissions | OBD-II Compliant | 
| Symptoms | No Tach | 
| Occurs | Intermittently | 
| Misc. | New Engine | 
Trouble Codes
| P0171 | Fuel System Too Lean (Bank 1) | 
| P0335 | Crankshaft Position Sensor 1 Circuit Malfunction (No Signal) | 
| P0336 | CKP Sensor 1 Circuit Intermittent Signal | 
Message Closed w/FIX
            
             Vehicle Data
 Vehicle Data
                2007 GMC Envoy SLE
| VIN | 1GKDT13SX7 | 
| Engine | 4.2 L / 6 cyl / GAS | 
| Trans | 4-speed Automatic (Electronic) | 
| Delivery | Fuel Injection | 
| Emissions | OBD-II Compliant | 
| Symptoms | No Tach | 
| Occurs | Intermittently | 
| Misc. | New Engine | 
Trouble Codes
| P0171 | Fuel System Too Lean (Bank 1) | 
| P0335 | Crankshaft Position Sensor 1 Circuit Malfunction (No Signal) | 
| P0336 | CKP Sensor 1 Circuit Intermittent Signal | 
 18 Replies Received
18 Replies Received
 18 Replies Received
          18 Replies Received
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