I've done the searches and I come to the conclusion that this is the easiest/cheapest way to go. I have the helms manual for the 99 but I need the computer pins outs from the 96-97. Anyone have these and could shoot me a copy?

Here's some of the other ways to get around VATS and why they aren't the best solution.
I can't get around the VATS by using a resistor b/c I don't have the VATS module from the donar to measure what it is. It would take way to long to try and guess the right value with the computer locking up for 2 min with every wrong attempt and after 3 wrong attempts to goes to 20min. (This is info from DIY_EFI page)

Reprogram it - It just costs $$$ and if anything happens to the computer you get to buy another one and have it reprogrammed again for more $$. Fastchip is 350 with sending it to them. Superchip is over 500 for a custom program and programmer, hmmmmm I wonder if that could be used to program multiple computers?? I might have some more research to do here.......

I like the idea, if possible, of just changing the connector pins outs and using a stock computer that easily/cheaply replaced if problems ever do happen.

If you have a 96-97 chevy Helms manual I could use your help! :)

Mike

P.S this is a 5.7 out of a tahoe and not the newer 5.3 and I'm using the 4L60e tranny too.

i am running a 99 vortec with a 97 vcm. i have the pin out for the 97 vcm on the computer at home. if you will shoot me an e-mal to wilson_ba@hotmail.com i'll forward it to you this evening. there are a few wires you need to move around in the vcm connectors so that the 99 harness will match the 97 vcm.

If you have any VATS module, you can re learn your VCM manually thru a very long(like 45 min.) procedure. The last one I did, the GM dealer let me use there scanner to re flash the new VCM to match my vas module. Didn't even charge me. I would use the harness you have and make it work. I have the printout and re learn procedure if you want . Just give me your email. Brett

Thanks High5! Email sent.

ALEX, not saying that that the way I'm gonna go but it would be great to have the info if you don't mind. I'm finding very little reliable info out there and wouldn't mind pooling it in one place. So an email is gonna be sent to you also.

Thanks again,
Mike:)

Hey I have a Vortec 350 going into my Scout. It's a '97 with all the junk I could pull from the donor Z-71. Going to install later this summer. Could I get a copy of that wiring/computer diagram? Not real sure what all I need to hook it up. Any info will help, Thanks....

Capt. Sean Lipscomb
RMS Titanic
slipscomb@Pirate4x4.com

Originally posted by slipscomb
Hey I have a Vortec 350 going into my Scout. It's a '97 with all the junk I could pull from the donor Z-71. Going to install later this summer. Could I get a copy of that wiring/computer diagram? Not real sure what all I need to hook it up. Any info will help, Thanks....

all i have for the 97 is the vcm pinout. if you are running a 97 vcm and a 97 harness you should not need it. everything will be where it needs to be. i would sugguest that you go buy a helms factory service manual for the donor vehicle. they are kinda pricy but well worth it for all the info they have. you will need it.

ok. Thanks.

I thought that the VATS module only disabled the fuel pump. My plan was to run a separate wire from a toggle switch for the fuel pump and not worry about the module. Am I correct?

Todd