OnStar Additional Information
See also:
Tire Sealant
Read and follow the safe handling instructions on the label adhered to the sealant canister.
Check the tire sealant expiration date on the sealant canister.
The sealant canister should be replaced b ...
Selecting the Right Engine Oil
Selecting the right engine oil depends on both the proper oil specification and viscosity grade.
See Recommended Fluids and Lubricants on page 11‑12.
Specification
Use and ask for licensed en ...
Four-Wheel-Drive Light
For vehicles equipped with the four-wheel-drive light, it comes on when a vehicle with a manual transfer case is shifted into four-wheel drive and the front axle engages.
Some delay between the shi ...





