Underbody Maintenance
Chemicals used for ice and snow removal and dust control can collect on the underbody. If these are not removed, corrosion and rust can develop on the underbody parts such as fuel lines, frame, floor pan, and exhaust system even though they have corrosion protection.
At least every spring, flush these materials from the underbody with plain water. Clean any areas where mud and debris can collect. Dirt packed in close areas of the frame should be loosened before being flushed. Your dealer or an underbody car washing system can do this for you.
See also:
Automatic Transmission Shift Lock Control Function Check
WARNING
When you are doing this inspection, the vehicle could move suddenly. If the vehicle moves, you or others could be injured.
1. Before starting this check, be sure there is enough room arou ...
Navigation System
If the vehicle has a navigation system, use of the system may result in the storage
of destinations, addresses, telephone numbers, and other trip information. Refer
to the navigation manual for in ...
Storing Name Tags
The system can store up to thirty phone numbers as
name tags that are shared between the Bluetooth and
OnStar systems.
The system uses the following commands to store and
retrieve phone numbers ...