See also:

Removing the Spare Tire and Tools
The jacking equipment you will need is stored under the rear seat on the passenger’s side of the vehicle. To release the jack from its holder, turn the knob on the jack counterclockwise to low ...

Passing
You’ll need more passing distance up ahead when you’re towing a trailer. And, because you’re a good deal longer, you’ll need to go much farther beyond the passed vehicle before you can ret ...

Add-on Electrical Equipment
The OnStar system is integrated into the electrical architecture of the vehicle. Do not add any electrical equipment. See Add-On Electrical Equipment. Added electrical equipment may interfer ...