Windshield
For safety, appearance, and the best viewing, keep the windshield clean and clear.
• Signs of damage include scratches, cracks, and chips.
• Trained dealer technicians can inspect the windshield and recommend proper replacement if needed.
See also:
Low Traction Mode
If your vehicle has the Allison Transmission, or the Hydra-Matic 6-Speed Automatic Transmission, it has a Low Traction Mode that can assist in vehicle acceleration when road conditions are slippery, s ...
Parking on Hills
WARNING
Parking the vehicle on a hill with the trailer attached can be dangerous. If
something goes wrong, the rig could start to move. People can be injured, and both
the vehicle and the trailer ...
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 ...





