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Still haven't driven my truck since swap.

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Old 09-08-2011, 10:19 PM
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Default Still haven't driven my truck since swap.

So i have these codes
P0740
P0748
U1000
P0785
P1860
U1064
I know the U is for the BCM but my truck turns on, could it be since i did the swap the tranny and the motor aren't communicating? I have EFI live, should i turn some codes off? How do i turn off vats?

Last edited by kr1s; 09-08-2011 at 10:28 PM.
Old 09-08-2011, 10:57 PM
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You use the V6 or V8 ecm?
Old 09-09-2011, 03:51 AM
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the V8 one, but it was from a avalanche
Old 09-09-2011, 07:18 AM
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not going towork i think u need one from a silverado...and i think 02 down not sure though
Old 09-09-2011, 08:01 PM
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If you have a 99-02 you need a 99-02 PCM
If you have an 03-06 you need a 03-06 PCM

You can use a V6 PCM just with a complete rewrite and a VATS disable.
Im not sure whether the avalanche PCM will work. I would imagine it would though

Make sure you have the trans harness plugged in correctly. And make sure all the grounds have been reconnected and are GOOD grounds
Old 09-14-2011, 12:15 PM
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What year is your truck again?
Old 09-19-2011, 11:50 AM
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Originally Posted by rjwz28
What year is your truck again?
2000 and i put a 2002 engine into it
Old 09-19-2011, 12:26 PM
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Originally Posted by kr1s
2000 and i put a 2002 engine into it
engine does not matter. what yr is the ecu from.
Old 09-19-2011, 12:49 PM
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the av wont work or i saw in an other thread somthing about a tahoe one it wont work either...Give spike a call bro like i told u since the start he might have some there for sale
Old 09-19-2011, 04:04 PM
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He's using the 2002 Avalanche engine and ECU I believe


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