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Old 08-23-2017, 11:23 AM   #1
Kudzupatch
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LS computer in earlier model with anti-lock brakes?

Seriously consindering an LS swap into my 93 Suburban. It has all the options including anti-lock brakes. I 'assume" they are controlled by the existing computer. If so I also assume that creates a problem with a newer LS computer?
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Old 08-25-2017, 08:42 PM   #2
NC_John
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Re: LS computer in earlier model with anti-lock brakes?

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Originally Posted by Kudzupatch View Post
Seriously consindering an LS swap into my 93 Suburban. It has all the options including anti-lock brakes. I 'assume" they are controlled by the existing computer. If so I also assume that creates a problem with a newer LS computer?
I dont think the pcm has anything to do with the brakes. That would be your bcm or maybe even a separate controller just for abs.
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Old 08-25-2017, 08:53 PM   #3
BR3W CITY
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Re: LS computer in earlier model with anti-lock brakes?

ABS module runs the ABS no? You can just pull the fuse to disable it, so I don't think the ECM in either vehicle is involved (or if it is, then its just supplying a voltage or ground. There is no control logic for it).;
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Old 08-26-2017, 07:18 AM   #4
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Re: LS computer in earlier model with anti-lock brakes?

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ABS module runs the ABS no? You can just pull the fuse to disable it, so I don't think the ECM in either vehicle is involved (or if it is, then its just supplying a voltage or ground. There is no control logic for it).;
Thats what I think. There is an independent abs controller. pcm is just what it says- powertrain control module.
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Old 08-26-2017, 07:45 AM   #5
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Re: LS computer in earlier model with anti-lock brakes?

Not sure, this is the huge Kelsey Hayes model on the inner fender well. I need to take a closer look at the wiring but I am beginning to think they are not connected after all.
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