2004 Chevy Blazer ABS Light after ball joint repair

Tiny
DLEONFC0
  • MEMBER
  • 2004 CHEVROLET BLAZER
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 98,000 MILES
So I just spent Saturday morning replacing all 4 ball joints on my 04' chevy blazer ZR2. A buddy and I took on the project in an effort to save a lot of money at the local shop. Unfotunately since the was our first go around with these, I may have shot my self in the foot here. We got everything in great but when I went to take a test drive the ABS light is on. I checked the ABS wiring into the hub and there is no visible damage anywhere. Although I ignorantly forgot to unplug them while pulling the hub aside for the ball joint replacment and I know its something we did, maybe too much pressure or something on the wire. How sensitive are the wheel speed sensors? I can get a new one for $36 bucks, but I don't know which one to change. And when I change it do I need to take the whole hub and everything off or can I just get at it from the back? It looks like all I need is an allen key. Basically should I just try to swap the sensor out, or am I better off letting the dealer do it and not messing up anything else? Oh yeah and will the ABS light clear when the part is replaced or will it need some kind of reset?
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Sunday, September 26th, 2010 AT 7:29 PM

4 Replies

Tiny
BILLYMAC
  • EXPERT
Yes the abs sensors are very sensitive, they're sensors lol
yes if you let them hang this could have broke one of the wires inside the sensor.

A scanner will be required to find which one it is.
Or you can just trial and error.

After you repair it remove the neg cable for a few mins and test brakes should clear the code
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Monday, September 27th, 2010 AT 5:51 PM
Tiny
DLEONFC0
  • MEMBER
Thanks! I got the code for which one thats busted and ill be swapping it out in the morning, hopefully all goes without any other incidents.I knew about removing the neg cable to reset the code, but what do you mean "test brakes"?
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Monday, September 27th, 2010 AT 6:43 PM
Tiny
BILLYMAC
  • EXPERT
All I mean is when you clear the code it will not turn the light back on until you reapply rhe brakes.

Replace sensor clear codes pump pedal if no light all is well
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Tuesday, September 28th, 2010 AT 7:25 AM
Tiny
DLEONFC0
  • MEMBER
Awesome, it all worked perfect thanks!
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Tuesday, September 28th, 2010 AT 12:39 PM

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