Diagnostic Aids
WARNING: This page is about a different car, the 2003 Pontiac Aztek and 2003 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
Check for a traction control switch that may be sticking in the pressed position. For an intermittent condition refer to TESTING FOR INTERMITTENT AND POOR CONNECTIONS in Wiring Systems.