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4 or 3 channel?

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Old Apr 11, 2009 | 08:45 PM
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camarorsz28's Avatar
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Default 4 or 3 channel?

How do you tell if your car came with a 4 or 3 channer rear end?
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Old Apr 11, 2009 | 08:48 PM
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3 channel has 1 plug in sensor on top of the housing. 4 channel has 1 plug in sensor at the end of each axle and not on the housing.
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Old Apr 11, 2009 | 09:00 PM
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Yep. ASR/TCS cars came with 4 channel, non ASR/TCS cars came with 3 channel.
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Old Apr 11, 2009 | 10:38 PM
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If i had a four channel rear end and my car has abs. would that make the abs not work? Or is that the wheel speed sensor or the abs computer? I had a shop look at it and they said i had a 3 channel rear end and i need a four. but my car doesn't have a asr switch in it.
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Old Apr 11, 2009 | 11:54 PM
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It wouldn't work if the wrong diff was in the car. You should be able to tell if there is a seperate brake line for each rear brake if it is 4 channel and only a single line on the 3 channel setup.
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Old Apr 12, 2009 | 10:28 AM
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What are you trying to accomplish? If your car came with 4 channel ABS/TCS, you should have a switch by the cigararette ligher to turn ACS off and on and you will have this big ugly black box on the passenger fender well like in the pic I attached. If you have neither, just adding a rearend setup for 4 channel won't work. It's a lot easier to change a 4 channel setup into a 3 channel setup rather than the other way around.

Last edited by HavATampa; May 31, 2011 at 10:15 PM.
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Old Apr 12, 2009 | 07:31 PM
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My abs doesn't work. So i brought it to a shop to look at it and they said that i had the wrong rear end in the car. They said that it had a 3 channel in it and it needed a 4. But that didn't sound right becaues like you said i don't have the acs on off switch. I just wanted to check with some other people before i take their work for it and switch the rear end.
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