abs inop light after gear change
02-26-2007, 09:29 AM
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abs inop light after gear change i had my gears changed to some 3.42's from the stock 2.73's. anyway after the install the abs inop light and the brake light r both on. i took off the wheel speed sensor and cleaned it off as per alamantia's suggestion , but they r still on. any help will be appreciated thank you
02-26-2007, 09:49 AM
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oh dude... i didnt know you went from 2.73's to 3.42's, thats going from a 2 series posi to a 3 series posi. 2.73's come on a 2 series posi. 3.42's come on a 3 series posi. In order for 3.42's to work on a 2 series posi you have to
A)buy 3.42's that are specificaly made for a 2 series posi.
B) buy a spacer ring.
C) install a 3 series posi.
Did you by any change have a 3 seires posi unit installed?
If thats the case, did it have this reluctor wheel on it http://www.afterthoughtsauto.com/reluctor-ring.html
you need this ring pressed onto the posi for teh ABS sensor to get a reading
A)buy 3.42's that are specificaly made for a 2 series posi.
B) buy a spacer ring.
C) install a 3 series posi.
Did you by any change have a 3 seires posi unit installed?
If thats the case, did it have this reluctor wheel on it http://www.afterthoughtsauto.com/reluctor-ring.html
you need this ring pressed onto the posi for teh ABS sensor to get a reading
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02-26-2007, 03:09 PM
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ok just got back fro mseeing the mechanic, he checked it out and told me that the problem might be the reluctor ring. meaning that he took my old 1 off my stock posi unit , which were the 2.73's , and put that 1 on the posi unit that i bought . now what he thinks happened is that being that my old posi unit was a 2 series carrier and the new 1 is a 3 series carrier, he thinks that the reluctor ring is not as thick as the rings on other 3 series carriers thus causing it to send the bad abs signal. so basically he says i need a reluctor ring 4 a 3 series carrier posi. what u guys think?
02-26-2007, 03:56 PM
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3 series ABS rings are 1/2" thick so you will need to contact a GM dealer and get one from a 3.23 or numerically higher ratio case.
02-26-2007, 04:30 PM
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Originally Posted by Scott@DrivelineSolutions
3 series ABS rings are 1/2" thick so you will need to contact a GM dealer and get one from a 3.23 or numerically higher ratio case.
02-26-2007, 04:39 PM
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yeah, i just looked in my garage, scott is 100% right, i have a reluctor ring for a 2 series posi and it looks about 3/16" or so thick and ~luckaly~ the one I put on my spare rear is wider it looks about 1/2" like scott said... ya know i never even noticed that before, good call scott, i learned something new today
02-26-2007, 07:50 PM
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LOL, When GM did the restyle in 1993 we were pulling out our hair until we seen the thicker ABS gears in 3.23 cars. Glad I could help.
