
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
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 |