Do i need to do a crank relearn? I suspected my stock pcm of needing a reflash so i got another stock pcm with same service number and same motor for free. trying to swap them now truck tries to crank but wont run.
Do i need to do a crank relearn? I suspected my stock pcm of needing a reflash so i got another stock pcm with same service number and same motor for free. trying to swap them now truck tries to crank but wont run.
04 5.3
224/224 .566 .566 114
3200 Circle D
LT's
60e
Nelson Tuned
p1sc in closet
try a Security relearn
Nelson Performance - Security Relearn for no start
Her name is A Meli-
"If everything is under control, you are going too slow."- MA
ill have to try that later gotta go to work so had to throw the old pcm back in.
04 5.3
224/224 .566 .566 114
3200 Circle D
LT's
60e
Nelson Tuned
p1sc in closet
Should it work after doing this? Or is it not possible to use a diff pcm?
04 5.3
224/224 .566 .566 114
3200 Circle D
LT's
60e
Nelson Tuned
p1sc in closet
You can use another PCM.. Make sure though it is from a Tahoe, Suburban, not a van.. I can tell you from experience... I think the VATs??? need to be unlocked, but others will know that.. I have another PCM I bought from an Avalanche. It works fine. I do get a Battery light that flashes in the message center but there is nothing wrong. It all has to do with the options that an avalanche has, I guess..
5.3, small cam, 918 springs, 7.4 rods, walboro pump, Full built 4l60, 2800-3000 stall, TB spacer, long tubes, cat delete, single 3" exhaust with Aero bullit muffler. Flaco tuned.
Did it crank right up with the new pcm? this one tries to fire but wont stay running and flashes the battery light and security light.
Re install the stock pcm and it will fire right up.
the pcm im trying to use is from a 2000 4.3 sierra
04 5.3
224/224 .566 .566 114
3200 Circle D
LT's
60e
Nelson Tuned
p1sc in closet
These don't have VATS. VATS is the old school system that uses the square head key with a pellet.
Anyway...you can swap but at minimum you need to do a theft learn as already stated in the topic by Melly. Even then option content and therefore the stock tune can vary greatly.
Why are we swapping PCM's again?
up till least 02 they still had VATS in the program. It was under the system block of the program and says VATS and you have choice of 3 settings. None, PWM and serialOriginally Posted by GasGuzzler
2002 Lightning - GT headed 5.5Litre w/ Twin 7665s
2002 Silverado - 427Lsx w/ Twin gt4202s
2010 Silverado crewcab Z71 - 5.3litre w/ procharger
2000 Wrangler - 5.3litre with some stance
2014 Xsport- 3.5 Eco boost
412 Motorsports
it ain't that I'm too big to listen to the rumors, It's just that I'm too damn big to pay attention to 'em..That's the difference
You are correct
Technically they do have VATS, since VATS just means Vehicle Anti-Theft System.
The early chip on the key was PASSLOCK, the 98-up trucks have PASSLOCK II and I think the GMT900 trucks have PASSLOCKIII.
They are all a form of VATS.
to see if it will make my gauges work again. since ive tried almost all the stuff im capable of.
04 5.3
224/224 .566 .566 114
3200 Circle D
LT's
60e
Nelson Tuned
p1sc in closet
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