abs/ traction control problems ..NEED HELP PLEASE

[ak47eaz]

hello everyone im new here ..glad find suc a website....i got a 99 trans am abs light traction control in all that...i replaced the right rear abs sensor..and it doesnt work...could this be the abs ring needs cleaning or maybe clean the rear sensors?.. and i was wondering that if that was the correct problem the sensor i replace ..would the abs light and traction work after ..would the lights go off on there own or do i have to clean em wit a scan tool

[Knight]

G'day and welcome to the site. Did you replace both sensors, or only one side? You might also check the wiring, and make sure there are no knicks or breaks in the wiring, and you have a good connection at the plug.

[0rion]

how do you know the right rear is the problem? Did you get the codes pulled and what were they?

[ak47eaz]

i did have the codes read but it was about 6 months ago but i forgot to write down the codes ..i juss no it said right rear abs sensor and i cant remember the last 2 words..but im about to have it scanned again today..im thinkingabout pulling both back wheels and pulling the rotors off cleaning the sensor and checking to see if theres any cracks or nicks in the abs ring...but i only replaced one sensor.....and i was wondering would 18 in 295 in the rear and 18in 275 in the front cause any problems..thanks guys or reponding

[pajeff02]

As 0rion stated, find out what brake code it is throwing and post that up. A difference in front to rear tire diameter may trigger an ABS/TCS light on your dash.

[0rion]

that little bit of a difference won't cause any problems. Yes....you can try to clean everything up and see if that cures your problem.

[ak47eaz]

my tires are only different in width ..i had a code from before that told me right rear but ya i planned on cleaning bth rears but checking the abs ring make sure no chips or cracks are in it ..then get the code checked juss so i no its not the rear and if it is it would be the sensor or maybe my wiring but this car only has 64,000 garge kept its whole life never seen a winter

[ak47eaz]

my code comes up as right rear circuit malfunction...is that in the wiring ?

[0rion]

no actual code number? Ciruit malfunction doesn't narrow it down much at all. Could be the sensor, could be the reluctor, could be the abs unit, and could be the wiring. The odds usually say it's a sensor problem. You can ohm out that sensor to check it. I'd have to see if I can find what that should ohm out too.....last one I had to ohm out was on my old truck and that's been 2-3 years ago. There are some gm techs floating around here so maybe one of them will be nice and look that up for us.

Worst case scenario is you can ohm out the left speed sensor and then compare it to the right.

[ak47eaz]

thanks orion.. i got a brand new sensor on that side i juss changed like 2 days ago