Possible causes – Deterrent key not programmed to vheicle– Faulty Deterrent key– Fualty ignition switch– Poor electrical connection for Deterrent circuit components Symptoms – Engine Light ON (or Service Engine Soon Warning Light)– No or hard engine start situation P1629 GMC OBD Code Description The Engine Control Module (ECM), the Powertrain Interface Module (PIM), and…
Tag: GMC
P1632 GMC Theft Deterrent Start Disable Signal Received
Possible causes – Deterrent key not programmed to vheicle– Faulty Deterrent key– Fualty ignition switch– Poor electrical connection for Deterrent circuit components Symptoms – Engine Light ON (or Service Engine Soon Warning Light)– No or hard engine start situation P1632 GMC OBD Code Description The Engine Control Module (ECM), the Powertrain Interface Module (PIM), and…
P0530 GMC Air Conditioning Refrigerant Pressure Sensor Circuit
Possible causes – A/C system low or over charged with refrigerant– Faulty A/C Refrigerant Pressure Sensor– Cooling fans in-operative– A/C Refrigerant Pressure Sensor harness is open or shorted– A/C Refrigerant Pressure Sensor circuit poor electrical connection When is the obd code mean? The P0530 code is detected when the signal circuit is less than 5…
P1271 GMC Accelerator Pedal Position Sensor 1-2 Correlation
Possible causes – Accelerator Pedal Position Sensor 1-2 harness is open or shorted – Accelerator Pedal Position Sensor 1-2)circuit poor electrcila connection – Faulty Accelerator Pedal Position Sensor 1-2 Symptoms – Engine Light ON (or Service Engine Soon Warning Light) – Possible poor acceleration P1271 GMC OBD Code Description
P0068 GMC MAP/MAF – Throttle Position Correlation
Possible causes – Air leak between the MAF sensor and throttle body– Dirty Throttle body or Mass Air Flow (MAF) sensor– Throttle Position (TP) sensor not seated properly– Faulty Throttle Position (TP) sensor– Faulty Mass Air Flow (MAF) sensor When is the obd code mean? If the PCM detects that the difference between the actual…
P0621 GMC Generator Lamp L Control Circuit Malfunction
Possible causes – Battery charge– Faulty Generator– Generator harness is open or shorted– Generator circuit poor electrical connection– Engine Control Module (ECM) controlled generator– Faulty ECM Tech description The ECM is detecting a high turn-on voltage at times. Possible causes could be the alternator or the ECM. When is the obd code mean? The Engine…
P1635 GMC 5 Volt Reference Circuit
Possible causes – A/C Pressure sensor harness is open or shorted– MAP sensor harness is open or shorted– EGR valve harness is open or shorted When is the obd code mean? The P1635 code is set when the reference voltage from the sensor is our of range. Symptoms – Engine Light ON (or Service Engine…
P0532 GMC A/C Refrigerant Pressure Sensor Circuit Low Input
Possible causes – A/C system low or over charge with refrigerant– Faulty A/C refrigerant pressure sensor– Cooling fans in-operative– A/C refrigerant pressure sensor circuit open or shorted– A/C refrigerant pressure sensor circuit poor electrical connection When is the obd code mean? The P0532 code is detected when the signal circuit is too low. Symptoms –…
P0533 GMC A/C Refrigerant Pressure Sensor Circuit High Input
Possible causes – A/C system low or over charge with refrigerant– Faulty A/C refrigerant pressure sensor– Cooling fans in-operative– A/C refrigerant pressure sensor circuit open or shorted– A/C refrigerant pressure sensor circuit poor electrical connection When is the obd code mean? The P0533 code is detected when the signal circuit is too high. Symptoms –…