See also:

Retained Accessory Power (RAP)
These vehicle accessories may be used for up to 10 minutes after the engine is turned off: Audio System Power Windows Sunroof The power windows and sunroof will continue to work for up to ...

How OnStar Service Works
: This blue button connects you to a specially trained OnStar advisor to verify your account information and to answer questions. : Push this red emergency button to get priority help fro ...

Rear Axle
When to Check Lubricant It is not necessary to regularly check rear axle fluid unless you suspect there is a leak or you hear an unusual noise. A fluid loss could indicate a problem. Have it inspe ...