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Old 07-20-2020, 01:59 PM   #1
glc4123
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2002 pontiac grand prix abs+trac light on

yes, i own 2002 pontiac grand prix gt, the abs+ trac light come intermittently and go off when turn ignition off. i cleaned abs connectors and still does it any help will be appreciated?
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Old 07-20-2020, 07:16 PM   #2
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Re: 2002 pontiac grand prix abs+trac light on

Its likely a broken/corroded wire. They like to break right where it attached to the control arm.
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Old 07-21-2020, 06:40 AM   #3
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Re: 2002 pontiac grand prix abs+trac light on

...Which is why many places sold sections of the ABS sensor harnesses and usually kept them in stock. As you know, it's fairly common, and somtimes right inside the cable itself.
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Old 07-21-2020, 08:58 AM   #4
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Re: 2002 pontiac grand prix abs+trac light on

Yeah. When I had my Grand Prix I had to replace a section on the passenger side. Dorman makes it usually.
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Old 07-21-2020, 04:07 PM   #5
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Re: 2002 pontiac grand prix abs+trac light on

thanks for the help
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Old 07-23-2020, 09:41 PM   #6
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Re: 2002 pontiac grand prix abs+trac light on

yes, has anyone changed a wheel speed sensor harness for this 2002 pontiac grand prix? my question is where does the harness 2 wires hook up too? and is it a hard job to do?
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Old 07-24-2020, 09:19 AM   #7
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Re: 2002 pontiac grand prix abs+trac light on

The ABS and TCS Off indicators are always lit on my 99. A year or two ago I had a shop read the ABS codes which revealed that the ABS electronic module had failed. The part was $1000 and I was reluctant to spend that. So now I just try to keep some extra space in front of me.
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Old 07-24-2020, 12:31 PM   #8
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Re: 2002 pontiac grand prix abs+trac light on

Extra distance is unnecessary since ABS does not decrease stopping distance. The whole point of ABS isn't to decrease stopping distance, its to "maintain control."
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Old 07-25-2020, 08:04 AM   #9
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Re: 2002 pontiac grand prix abs+trac light on

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Originally Posted by DrRadar View Post
The ABS and TCS Off indicators are always lit on my 99. A year or two ago I had a shop read the ABS codes which revealed that the ABS electronic module had failed. The part was $1000 and I was reluctant to spend that. So now I just try to keep some extra space in front of me.
Doc - If you're handy with a couple different tools, replacement Bosch 5 units are sometimes more reasonable than that. I've seen them for under $100 with a one-year warranty on eBay.
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Old 07-28-2020, 03:47 PM   #10
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Re: 2002 pontiac grand prix abs+trac light on

yes, i had another question about this grand prix, could a front hub because this to set the lights on? becuse there is no dtc code when i read it?
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Old 07-28-2020, 04:38 PM   #11
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Re: 2002 pontiac grand prix abs+trac light on

A bad hub could cause it, but you'd still have some sort of DTC.

Two things though, your reader has to be capable of reading ABS codes, and two, the ABS light has to be on for the code to be able to be read. When I had my ABS light on my reader couldn't read it. I went into Advance and grabbed their reader and it showed the right front.
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Old 07-28-2020, 04:58 PM   #12
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Re: 2002 pontiac grand prix abs+trac light on

thanks for the help, my abs&trac light is on all time. i have a reader that is supposed to be abs and it still doesn't show no codes on reader?
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Old 07-30-2020, 06:40 AM   #13
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Re: 2002 pontiac grand prix abs+trac light on

It would still be helpful to have the actual error codes.
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Old 07-31-2020, 04:35 PM   #14
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Re: 2002 pontiac grand prix abs+trac light on

thanks everyone for the help, the problem was the speed sensor harnesses
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