P2120 Diagnostic Trouble Code Discussion for January 2014
Accelerator Pedal Position Sensor 1 Circuit Malfunction
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| Help Request | Posted | |
| 2004 GMC Yukon SLT 5.3L Surge, runaway idle P2120: Accelerator Pedal Position Sensor 1 Circuit Malfunction. get app 1&2 codes, tps 1&2 codes Tried known good throttle body and accelerator assemblies. Tried stabilant 22, tried known good tach module. |
January 30, 2014 |
