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Old 02-27-2013, 09:08 AM   #1
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Default Bought a 2001 5.3 LS & 700R4 but no computer or wire harness. Which one do I need?

I picked up a 5.3 LS V8 out of 2001 Chevy Suburban with 113,000 miles for $250 and a 700R4 from a 1990 S10 Blazer with 90,000 miles for $100. I got both for $350 including no tax and no core charge. The motor does not have a computer or wire harness.

Which computer do I need and that is tunable and maybe even controls a 4L60E in the future if I go that route?

Which wire harness ?

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Old 02-27-2013, 01:04 PM   #2
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I would suggest getting one that matches the Intake you are running. If you are running the 2001 suburban intake, then get one from the 01-2002 suburban.

Ecm should be part number 12200411
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Old 02-27-2013, 02:11 PM   #3
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wait4me,

The 12200411 ECM is used in lots of truck & cars for the 2001 time period. Does it matter which one get since it will have to be re-flashed anyway to remove ignition key security and re-tune for a bigger cam?

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Old 02-27-2013, 02:12 PM   #4
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It will need to be flashed so it don't matter what one you get. They all interchange.
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Old 02-27-2013, 03:36 PM   #5
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I just talk to the yard that is closing will get the 5.3, 700R4 with a 411 ecu for $350.


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Old 02-27-2013, 03:39 PM   #6
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If I get the 4L60E instead of the 700R4, which one would I need ? From S10 with 4.3? Chevy 1500 ?

The yard still has the 4L60E.

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Old 02-28-2013, 10:54 AM   #7
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wait4me, does the 12200411 ECM support cable throttle body?

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Old 03-25-2013, 11:10 AM   #8
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Msd atomic ls efi and a 700r4!
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Old 03-25-2013, 05:22 PM   #9
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411 does support the drive by cabe and drive by wire. I highly recommendyou get a 4L60E from a V8 over the 700r4 as brackets for the downshift TV cable are more than the cost difference. Plus a V8 trans is just easier. 4.3L 4L60e is dimensionally is different than the v6 trans in converter/bellhousing area.
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Old 03-25-2013, 05:22 PM
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04, 53, 700r4, atomic, big, efi, fuel, harness, injected, ls, map, msd, stuff, transmission, wiring


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