See also:

Activating Adaptive Cruise Control (ACC)
You can only activate ACC if the vehicle speed is above 20 mph (32 km/h). When the system is turned on and in the READY state, the Electronic Vehicle Information Center (EVIC) displays “Adapt ...

Quadra-Drive II System – If Equipped
The optional Quadra-Drive II System features two torque transfer couplings. The couplings include an Electronic Limited-Slip Differential (ELSD) rear axle and the Quadra-Trac II transfer case. T ...

Front/Rear Axle Fluid
For normal service, periodic fluid level checks are not required. When the vehicle is serviced for other reasons the exterior surfaces of the axle assembly should be inspected. If gear oil leakage ...