Both ABS and TCS (Traction Control System) lights have come on and off over
the past year. This summer, they came on when the weather was really hot
(over 90) and I began thinking maybe the bearings were affecting the
Now that it's cool (under 60) they are coming on frequently right after
starting. Sometimes I can move 20 feet and restart the car and they both go
A week ago (both lights were off) I made a hard stop on wet pavement, and I
think the ABS kicked in for an instant, and both these lights popped on
simultaneously. Since then they've been on more than they've been off.
I figure I'll have to probably take the car in to a GM dealer.. but is there
anything I can do on my own to troubleshoot it before resorting to a dealer?