after talking with Jon this morning there going to get another pcm loaded and sent out.
after talking with Jon this morning there going to get another pcm loaded and sent out.
1996 GMC extended cab, 2003 5.3/auto
Good luck, It's hard to diagnose an electrical issue over the net, you really need someone looking at it with you. I doubt this is a BCM issue, it's more than likely wiring or PCM/tuning related.
97 GMC, 2002 LS6.
1991 GMC Syclone #1428
I forgot the vehicle is older than the harness and engine. The BCM doesn't factor here AS LONG AS THE TUNE HAS THE SECURITY TURNED OFF.
I keep looking at description and operation for the donor harness/powertrain forgetting the vehicles are often different.
I still surmise it's a security issue which would still be PCM related.
I keep doing the same thing so don't feel bad. This kinda stuff happens when you combine different year models.Originally Posted by GasGuzzler
I forgot the vehicle is older than the harness and engine. The BCM doesn't factor here AS LONG AS THE TUNE HAS THE SECURITY TURNED OFF.
I keep looking at description and operation for the donor harness/powertrain forgetting the vehicles are often different.
I still surmise it's a security issue which would still be PCM related.
97 GMC, 2002 LS6.
1991 GMC Syclone #1428
Shouldnt be a wiring issue, Id be happy if it was though, then this would be over and done with.
To take one more variable out of the equation, he asked them to turn the neutral safety switch off within the computer. Im fairly confident everything else is wired as suggested, and no stock wires were modified....cross our fingers and hope fer the best I reckon.
LSX conversions, so easy a caveman can do it.
Programmer man said you cant turn the neutral safety switch off inside the pcm via tuning.
What do you do to bypass it, just not connect it?
LSX conversions, so easy a caveman can do it.
Correct.
just to clarify, the neutral safety switch is the box on the side of the tranny correct, that has the gear selector going through it? there are two electrical connections? should he remove one or the other or both?
thanks
Last edited by LSXmyford; 08-15-2008 at 10:23 AM.
LSX conversions, so easy a caveman can do it.
Just remove the N/S switch not the indicator wires. It's worth having that switch though so you don't start your truck in gear.
97 GMC, 2002 LS6.
1991 GMC Syclone #1428
My bro piddled around some, tested more wires and seems the neutral switch is fine, SHE CRANKS WITH THE KEY NOW, through the old wiring harness purple wire....STILL NO FIRE.
This rules out the NSW I believe, as it doesnt make any difference anyway, according to nelsons and everyone else.
He has the fuel pump relay connected to the gray wire that goes to the fuel pump, the relay can audibly be heard switching, as its supposed too. Rules that out.
He still smells fuel when he cranks it, crank the engine, get a strong smell of gas, lingers for a couple minutes...further verify this....PLUGS ARE NEW and WET.
Nelsons says its not the VATS, said the symptoms are something else, what I do not know? Still taking suggestions...still not convinced its not the VATS....as based on my understanding VATS kills the starter if theft is detected...we are getting nothing at the purple starter solenoid wire on the new pcm....so??? Is it possible 1 + 1 would equal 2
At this point not sure if they are sending a newly programmed pcm or not....hope so...as that should rule that out.
LSX conversions, so easy a caveman can do it.
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