Tag: GMC

Possible causes – Faulty Crankshaft Position Sensor– Crankshaft Position Sensor harness is open or shorted– Crankshaft Position Sensor circuit poor electrical connection– Signal plate may be damage Symptoms – Engine Light ON (or Service Engine Soon Warning Light)– Lack/Loss of Power– Engine Stall– Engine difficult to start P1336 GMC OBD Code Description The Crankshaft Position…

Possible causes – Faulty crankshaft position sensor– Crankshaft position sensor harness is open or shorted– Crankshaft position sensor circuit poor electrical connection– Signal plate may be damage– Starter motor may be faulty– Starting system circuit– Dead or weak battery When is the obd code mean? The crankshaft position sensor (POS) signal is not detected by…

Possible causes – Faulty Crankshaft Sensor– Crankshaft Sensor harness is open or shorted– Crankshaft Sensor circuit poor electrical connection– Faulty Ignition Control Module When is the obd code mean? The Powertrain Control Module (PCM) detects a predetermined amount of high resolution pulses before detecting any low resolution pulses. Symptoms – Engine Light ON (or Service…

Possible causes – Faulty cylinder #1 glow plug– Cylinder #1 glow plug harness is open or shroted– Cylinder #1 glow plug circuit poor electrical connection– Faulty glow plug module When is the obd code mean? The Engine Control Module (ECM) has detected a fault in the cylinder #1 glow plug circuit Symptoms – Engine Light…

Possible causes – Faulty cylinder #2 glow plug– Cylinder #2 glow plug harness is open or shroted– Cylinder #2 glow plug circuit poor electrical connection– Faulty glow plug module When is the obd code mean? The Engine Control Module (ECM) has detected a fault in the cylinder #2 glow plug circuit Symptoms – Engine Light…

Possible causes – Faulty Camshaft Position Sensor– Camshaft Position Sensor harness is open or shorted– Camshaft Position Sensor circuit poor electrical connection– Faulty starter motor– Starting system circuit– Dead (Weak) battery Tech description Sometimes and in some models, low battery voltage or a weak starter can can trigger a Camshaft Position Sensor code. When is…

Possible causes – Faulty Camshaft Position Sensor– Camshaft Position Sensor harness is open or shorted– Camshaft Position Sensor circuit poor electrical connection– Faulty starter motor– Starting system circuit– Dead (Weak) battery Tech description Sometimes and in some models, low battery voltage or a weak starter can can trigger a Camshaft Position Sensor code. When is…

Possible causes – Faulty Clutch Switch– Misadjusted Clutch Switch– Clutch Switch harness is open or shorted– Clutch Switch circuit poor electrical connection– Faulty Engine Control Module (ECM) Tech description Check clutch switch adjustment, the switch should open and close when the clutch pedal is depress. If the switch is properly adjusted, replaced the clutch switch…

Possible causes – Faulty Control Solenoid Valve Assembly– Control Solenoid Valve Assembly harness is open or shorted– Control Solenoid Valve Assembly circuit poor electrical connection When is the obd code mean? The Powertrain Control Module (PCM) commanded the Torque Converter Clutch Pulse Width Modulation (TCC PWM) solenoid on and off and the feedback voltage was…

Possible causes – Faulty AIR Pressure Sensor– AIR Pressure Sensor harness is open or shorted– AIR Pressure Sensor circuit poor electrical connection When is the obd code mean? The AIR Pressure Sensor is reporting a pressure greater than or less than expected during the system monitor test Symptoms – Engine Light ON (or Service Engine…