ABS module question
Thread Starter
Staging Lane
Joined: Feb 2018
Posts: 92
Likes: 0
From: Central PA
ABS module question Good morning guys. Trying to figure out if my 02 camaro is a 3 channel or 4 abs system. It has 2 wheel speed sensors in the front and 2 in the rear. There is no traction control switch inside, its blocked off. Also no traction control motor under the hood that I can find. So I guess its 4 channel, bu teverything I read says only TC cars are 4 channel. Thanks for any help
Thread Starter
Staging Lane
Joined: Feb 2018
Posts: 92
Likes: 0
From: Central PA
There is for sure no TC. There is absolutely nothing out under the hood and the only cable there is attached to the throttle body and goes directly through the firewall into the gas pedal. Also no switch, just a block off switch cover. Could this have had it at one time and maybe someone removed it? It has 4 wheel speed sensors, so has that system ever been used without TC? Thanks
Thread Starter
Staging Lane
Joined: Feb 2018
Posts: 92
Likes: 0
From: Central PA
Guess I should had that the reason I'm looking for this is to buy the proper abs module. I have the brake light and abs inop light coming on as soon as I move the car. I know this is a common problem with these. I scanned the car and its coming up with faults on those 2 rear abs sensors. weird thing is the front sensors read perfect, but the rear 2 read the wrong speed when traveling. They read the exact same speed but its way off from the front. any ideas
Guess I should had that the reason I'm looking for this is to buy the proper abs module. I have the brake light and abs inop light coming on as soon as I move the car. I know this is a common problem with these. I scanned the car and its coming up with faults on those 2 rear abs sensors. weird thing is the front sensors read perfect, but the rear 2 read the wrong speed when traveling. They read the exact same speed but its way off from the front. any ideas
its odd that your car is a 4 channel but no tcs switch.......how long have you had this car? was there ever a time where you could drive it without those lights coming on?
Some owner before you did this: Car IS a 3channel ABS only and from your past posts it is an M6. In the past before you,the M6 blew the rearend. Owner couldn't quickly find a 3 channel rearend and put in a 4 channel rearend to get it running. Didn't care if ABS light was on. Then you got the car without being told what was done in the past.
The rear 2 sensors read the wrong speed which makes sense because a 3 channel reluctor ring has 106 teeth,your 4 channel rear has reluctor rings the have 47 teeth.
If you want to make the lights go away you have to install a 3 channel rearend. Very difficult/impossible to convert a 4 channel rearend into a 3 channel.
The rear 2 sensors read the wrong speed which makes sense because a 3 channel reluctor ring has 106 teeth,your 4 channel rear has reluctor rings the have 47 teeth.
If you want to make the lights go away you have to install a 3 channel rearend. Very difficult/impossible to convert a 4 channel rearend into a 3 channel.
unless he got a 4 channel harness and hooked that up only to find out obviously that doesn't work i can't understand why they are reading anything.....what tool are you using to verify the speed of the rear wheels?
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Thread Starter
Staging Lane
Joined: Feb 2018
Posts: 92
Likes: 0
From: Central PA
Have only owned this car for a few months and yes the lights have been on since then. Previous owner claims he also bought it that way
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Staging Lane
Joined: Feb 2018
Posts: 92
Likes: 0
From: Central PA
Thread Starter
Staging Lane
Joined: Feb 2018
Posts: 92
Likes: 0
From: Central PA
Some owner before you did this: Car IS a 3channel ABS only and from your past posts it is an M6. In the past before you,the M6 blew the rearend. Owner couldn't quickly find a 3 channel rearend and put in a 4 channel rearend to get it running. Didn't care if ABS light was on. Then you got the car without being told what was done in the past.
The rear 2 sensors read the wrong speed which makes sense because a 3 channel reluctor ring has 106 teeth,your 4 channel rear has reluctor rings the have 47 teeth.
If you want to make the lights go away you have to install a 3 channel rearend. Very difficult/impossible to convert a 4 channel rearend into a 3 channel.
The rear 2 sensors read the wrong speed which makes sense because a 3 channel reluctor ring has 106 teeth,your 4 channel rear has reluctor rings the have 47 teeth.
If you want to make the lights go away you have to install a 3 channel rearend. Very difficult/impossible to convert a 4 channel rearend into a 3 channel.
Thread Starter
Staging Lane
Joined: Feb 2018
Posts: 92
Likes: 0
From: Central PA
Then your car didn't come with it from the factory. I'd say the previous post is correct, sounds like the previous owner put a 4 channel rear under your 3 channel car. So of course your ABS lights are going to be on. Before you go replacing the ABS block, you should fix the problem with the rear end first. You can either put a 3 channel rear under there, or retrofit a reluctor wheel and sensor into the current 4 channel pumpkin, which is much more work for you. It's been done before though.
Thread Starter
Staging Lane
Joined: Feb 2018
Posts: 92
Likes: 0
From: Central PA
Thanks for the help guys and yes I'm ordering a 9" here very soon. Was going to wait til winter to start tinkering, but may hit a couple of these problems sooner rather than later. Have built some badass LT1's in the past. Been about 10 years since I've played around with these cars. Sold off my TA shortly after my daughter was born. Car was built and was caged and couldnt manage to get a car seat in there haha. 11 years later and my daughter was begging for something fun so he we are about to shrink the bank account. Owned a few 4th gens, but this is my first LS motored car. Should be a fun build. Thanks again for the help!
Thread Starter
Staging Lane
Joined: Feb 2018
Posts: 92
Likes: 0
From: Central PA
