See also:

Ride & Handling
Whenever I approach a vehicle this large I bring along the expectation that it will be hard to maneuver. In the Yukon I was surprisingly sure of myself, even on the tightest city streets. Not only ...

Rear Window Defogger
REAR (Rear Defogger): Press to turn the rear window defogger on or off. The rear window defogger turns off after about 10 minutes. It can also be turned off by turning the ignition to ACC/ACCESSO ...

Diagnostics
OnStar Vehicle Diagnostics will perform a vehicle check every month. It will check the engine, transmission, antilock brakes, and major vehicle systems. It also checks the tire pressures, if the vehic ...