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Local tech saying VATS resistor bypass works without BCM??

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Old 05-03-2010, 03:41 PM
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Default Local tech saying VATS resistor bypass works without BCM??

Im having trouble finding someone locally to get VATS out of my ECM so my project will run and i can get it out of the shop tomorrow or Wed. I called a local specialist and he told me he will come and do the resistor mod. He said he has the source code from GM? I was under the impression that mod was for people who still had the BCM in their cars? I am not using the BCM. My powertrain and harness is a 2004 GTO setup which i thought was a serial data line that could not be hacked into by a resistor or any of the bypass modules on ebay? Am i miss informed? I don't really want to pay for this guy to come out for a job he may end up not being able to do.
Old 05-03-2010, 07:09 PM
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The resistor will not work for you. The GTO uses the key fob which transmits BCM,then to the PIM , Then to the PCM. No other GM vehicle uses this type of system. I am assuming that you are only using the engine harness and no other modules at all. I think your only options are to either get a tuner to tune the VTD out of the PCM so it doesnt look for it OR you can Probably get a PCM from a diff type of car and you may have to change PCM connectors to make it work. I would go with the tuner method.
Old 05-03-2010, 08:17 PM
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Originally Posted by 1quickirocz
I am assuming that you are only using the engine harness and no other modules at all. I think your only options are to either get a tuner to tune the VTD out of the PCM so it doesnt look for it OR you can Probably get a PCM from a diff type of car and you may have to change PCM connectors to make it work. I would go with the tuner method.
I am using the engine harness, but it also has a Powertrain Interface Module plugged into it and a Throttle Controller - both mounted together. I wasn't sure what to do with these so i just left them plugged into the harness.

Excuse my ignorance to the acronyms, but by PCM are you referring to the Engine Control Module?
Old 05-03-2010, 08:34 PM
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Originally Posted by DJBLS1
I am using the engine harness, but it also has a Powertrain Interface Module plugged into it and a Throttle Controller - both mounted together. I wasn't sure what to do with these so i just left them plugged into the harness.

Excuse my ignorance to the acronyms, but by PCM are you referring to the Engine Control Module?
Yes he's talking about the ECM, Theu called them PCM Powertrain Control Modules, since they controlled both the engine and tranny
Old 05-03-2010, 08:39 PM
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Originally Posted by DJBLS1
I am using the engine harness, but it also has a Powertrain Interface Module plugged into it and a Throttle Controller - both mounted together. I wasn't sure what to do with these so i just left them plugged into the harness.

Excuse my ignorance to the acronyms, but by PCM are you referring to the Engine Control Module?
yes when i say PCM I mean ECM (engine control mod). Im thinking you need to keep the PIM and deff the Throttle control. I think your best bet here is a tune to delete vehicle theft deter out of the ECM. should be fine with that. I think thats alot cheaper than changing ECMs and converting wiring and all that good stuff. Thats like starting your project all over again haha
Old 05-04-2010, 09:50 PM
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The BCM controls the starter rely and sends a signal to the PCM so that it enables the fuel pump relay.
As long as everything's wired right (BCM & PCM not controlling relays) you shouldn't have a problem.
There are tables in the OS that define the type of anti theft system the vehicle uses and
whether or not the vehicle is fitted with column lock anti-theft system.

Last edited by shoemike; 05-04-2010 at 10:11 PM.
Old 11-11-2011, 02:04 PM
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bringing this back from the dead.
OP-were you able to figure this out?



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