GM Service Manual Online
For 1990-2009 cars only

Object Number: 814429  Size: A1

If your vehicle has the Enhanced Traction System (ETS), this warning light should come on briefly as you start the engine.

If the warning light does not come on, then have it fixed so it will be ready to warn you if there is a problem.

If the warning light stays on, or comes on when you are driving, there may be a problem with your ETS and your vehicle may need service. When this warning light is on, the system will not limit wheel spin. Adjust your driving accordingly.

The ETS warning light may come on for the following reasons:

    • If you turn the system off by moving the shift lever to LOW (L), the warning light will come on and stay on. To turn the system back on, move the shift lever back to a position other than LOW (L). The warning light should go off. See Enhanced Traction System (ETS) for more information.
    • The warning light will come on when you set your parking brake with the engine running, and it will stay on if your parking brake does not release fully. If the transaxle shift lever is in any position other than LOW (L) and the warning light stays on after your parking brake is fully released, it means there is a problem with the system.
    • If the traction control system is affected by an engine-related problem, the system will turn off and the warning light will come on.

If the ETS warning light comes on and stays on for an extended period of time when the transaxle shift lever is in any position other than LOW (L), your vehicle needs service.