Differential Clutch Oil Inspection
- Run the engine at idling speed for 5 minutes to distribute the fluid.
- In park, cycle throttle to wide open throttle briefly 5 times to cycle solenoids to purge air.
- Turn the engine off.
- Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
- Remove the fill plug (1) and check the differential clutch fluid level.
- Add the proper differential clutch fluid, if needed. Refer to Adhesives, Fluids, Lubricants, and Sealers , and Differential Clutch Oil Replacement .
- Install the fill plug (1) and tighten to 14 N.m (10 lb ft).
- Install the scan tool.
- With engine running, observe the scan tool Rear Differential Clutch Pump Motor Current parameter. The parameter display should be between 2500-3500 mA when the pump is on. If the parameter is below 2500 mA, recheck the fluid level.
- Repeat steps 1-6 to ensure the proper differential clutch fluid level.
- Remove the supports and lower the vehicle.
WARNING:
The hydraulic pressure in the differential clutch is very high. To prevent personal injury, wait for at least 10 minutes before removing any parts from the differential clutch.
NOTE:
The following steps must be followed to ensure the proper fluid level for the differential clutch fluid.
NOTE:
Ensure that the vehicle is as level as possible.
CAUTION:
It is very important to observe maximum cleanliness when working on the differential clutch. Dirt particles can seriously damage the function and service life of the differential clutch.
NOTE:
The differential clutch fluid should be level with the bottom threads of the fill hole.
CAUTION:
Refer to Fastener Caution .