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/retailer or an underbody car washing system can do this.

    See also:

    When the Change Engine Oil Soon Message Displays
    Change engine oil and filter. See Engine Oil. An Emission Control Service. When the Change Engine Oil Soon message displays, service is required for the vehicle as soon as possible, within the ne ...

    What to Do with Used Oil
    Used engine oil contains certain elements that can be unhealthy for your skin and could even cause cancer. Do not let used oil stay on your skin for very long. Clean your skin and nails with soap ...

    Customer Satisfaction Procedure (Mexico)
    Did you get the Warranty Extension Plan? This plan is recommended by General Motors to supplement the warranty included with the new vehicle purchase. See your dealer for details. Customer ...