CTS Wagon RWD V6-3.6L (2010)
Caution: Refer to Fastener Caution (See: Service Precautions/Vehicle Damage Warnings/Fastener Caution).
1. Install the drain plug to the differential and tighten to 23 Nm (17 lb ft).
2. Clean any dirt from around the differential fill plug.
3. Remove the fill plug from the differential.
Note: If equipped with a limited slip differential, limited slip differential lubricant additive, GM P/N 1052358 (Canadian P/N 992394) or
equivalent must be added first. Refer to Lubrication Specifications (See: Specifications/Fluid Type Specifications/Rear Drive Axle/Lubrication
Specifications). Approximately 0.23 L (7.8 oz) of residual fluid will remain in the differential.
4. Fill the differential with 75W90 synthetic axle lubricant , GM P/N 12378261 (Canadian P/N 10953455) or equivalent. Refer to Lubrication
Specifications (See: Specifications/Fluid Type Specifications/Rear Drive Axle/Lubrication Specifications).
5. Inspect the gear lubricant level to ensure it is even with the bottom of the fill plug hole to no lower than 6 mm (0.25 in) below the opening.
6. Install the fill plug to the differential and tighten to 23 Nm (17 lb ft).
7. Lower the vehicle.
