AWD Oil Pump Motor
Table of contents
C0407 GMC Possible Causes
- Faulty AWD Oil Pump Motor
- AWD Oil Pump Motor harness is open or shorted
- AWD Oil Pump Motor circuit poor electrical connection
How do I fix code C0407 GMC?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Tech Notes
- – C0407 02 AWD Oil Pump Motor Short to Ground
- – C0407 04 AWD Oil Pump Motor Open
- – C0407 0B AWD Oil Pump Motor High Current
- – C0407 64 AWD Oil Pump Motor Component Slipping
Cost of diagnosing the C0407 GMC code
The cost of diagnosing the C0407 GMC code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Anti-Lock Brake System (ABS) Warning Light ON
- Engine Light ON (or Service Engine Soon Warning Light)
C0407 GMC Description
The differential clutch pump delivers hydraulic oil pressure to the rear drive clutch solenoid valve and the rear differential clutch solenoid valve. The pump is mounted to the torque transfer device housing. The pressure of the system is calculated by the rear differential clutch control module which monitors the differential clutch pump motor current levels. When the pressure reaches approximately 3200 kPa (464 psi), the rear differential clutch control module determines that the system pressure has been obtained and deacvitates the differential clutch pump. When the pressure drops below approximately 2700 kPa (392 psi), the rear differential clutch control module will reactivate the differential clutch pump.