02 Chevy trailblazer

Asked by Jul 12, 2019 at 11:25 AM about the 2002 Chevrolet TrailBlazer EXT

Question type: Maintenance & Repair

My abs light came on I took it to o'Reilly and they said that's
it a wheel sensor what my question is how many wheel
sensor does my car have. Please help need to fix the car
and I don't have the cash for the shop please help anyone

2 Answers


Your vehicle, like any other, should have 4 wheel speed sensors (ABS), that's one per wheel. There are some older vehicles that have only two, which covers the rear wheels - because that's how the system is designed for those vehicles. Unsure of the cost, however, yet I can reference you to my experience with a previous vehicle I owned (2008 Chrysler 300 Touring). They were $179 each - dealer installed. O'Reilly may be able to do a little better, but I don't know since I trust no one with my vehicle besides the dealer. My experience has always been better, and dollar for dollar, the expense isn't much different. For me, it's about "warranty" much more so than cost. Best wishes.


I have a 2005 trailblazer. My ABS light is on. I just did the rear pads and rotors and I was looking for rear sensors and it doesn't have rear speed sensors. The front sensors are included in the wheel bearings i just replaced. Thinking one has gone bad now. They're about 20 bucks each at advance auto parts

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