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.
Chevrolet Cobalt Owners Manual. Content Theft-Deterrent
Your vehicle may have a
content theft-deterrent
alarm system.
Arming the System
With the ignition off, you can arm the system by
pressing the remote keyless entry transmitter
lock button.
The system will arm after either of these things occur:
- Thirty seconds after all the doors are close ...