GM Service Manual Online
For 1990-2009 cars only

Object Number: 808332  Size: A1

If the vehicle has the Enhanced Traction System, (ETS) the warning light may come on for the following reasons:

    • When the vehicle is shifted to SECOND (2) or FIRST (1). To turn the system back on, shift to THIRD (3) or AUTOMATIC OVERDRIVE (Overdrive). See Enhanced Traction System (ETS) .
    • If the vehicle needs service. Adjust your driving accordingly.
    • When the parking brake is set with the engine running, and the parking brake does not release fully.
        After the parking brake is fully released and the transaxle shift lever is in any position other than FIRST (1) or SECOND (2). This means there is a problem with the system.
    • If an engine-related problem affects the ETS and turns the system off.

When the ETS warning light is on, the system will not limit wheel spin. Adjust your driving accordingly.