Fluid - Differential: Testing and Inspection

Lubricant Level Inspection - Rear Drive Axle

Inspection Procedure
1. Raise and support the vehicle. Refer to Vehicle lifting





2. Clean any dirt from around the differential fill plug.
3. Remove the fill plug, lubricant tag, and washer from the differential.
4. Check the differential fluid level. it should be even with the bottom of the fill plug hole to no lower than 6 mm (0.25 inch) below the opening.
5. Add new fluid if necessary.
^ Fill with synthetic axle lubricant GM P/N 1237826 (Canadian P/N 10953455).
^ If necessary, add enough limited slip differential lubricant additive GM P/N 1052358 (Canadian P/N 992694), or equivalent to maintain the original ratio of 1.6 Liters (1.69 quarts) of axle lubricant to 118 ml (4.0 ounces) of limited slip additive.

Notice: Refer to Fastener Notice in Service Precautions.

6. Install the fill plug, lubricant tag, and washer to the differential.
Tighten the differential fill plug to 35 Nm (26 ft. lbs.).
7. Lower the vehicle.