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Old 02-06-2004, 04:00 PM
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Red face which PCM?

Anybody out there have any ideas on which gm computer I can use? I have a 2001 Chevy 5.7 litre engine, with a 1988 770R4 2wd trans going into a 1950 Chevy pickup. I have an ECM and harness from a 1987 Suburban, but I am fairly certain that the TBI is different on the newer engine. If this has been asked before, please point me in the right direction. Thanks

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Old 02-06-2004, 06:39 PM
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You need the ECU that came in that same type vehicle you got the engine from. Does not have to be the same year, but the same mechanical setup. The one you have will not work. Is that a computer controlled transmission. I am unfamiliar.

Chris
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Old 02-06-2004, 06:45 PM
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Thanks Chris, Thats kind of what I thought, but doesn't hurt to ask. The 700r4 is a lockup overdrive trans. It is not controlled ny the ecm.
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Old 02-06-2004, 07:46 PM
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Well you said 770R4 which I had not heard of.

I think you should be fine with the late model ECU. Should be able to find in the junk yard.

Chris
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Old 02-06-2004, 10:55 PM
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I guess I should learn how to type!! I seem to stutter a lot on the keys. BTW thanks, I just got offered a pcm from a 97 1/2 ton pickup. Should do the trick (I hope) Thanks again.....
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Old 02-07-2004, 05:50 AM
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If you want some help with wiring diagrams I can email them to you. That motor should look pretty cool in there.
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