How do I unlock the PCM?
When I go to read calibration data i get an error : Bootloader rejected. EFILive could not unlock the PCM.
I have a feeling HPtuners has it locked somehow. Is there a way EFI will unlock it? As ussual there is no info over at HPTuners on how to unlock.
What does the seed say it is when you try to read?
"If you can leave a black mark on the pavement, from the exit of one corner to the braking point of the next one, you have enough horsepower."
10:40:17.781: GM operating system: 1271002
10:40:18.250: Request GM BCC...
10:40:18.296: GM BCC: DJZX
10:40:18.765: Request GM VAT Cycles...
10:40:18.796: GM VAT cycles: 0
10:40:19.265: Analysing security...
10:40:19.312: PCM seed is: $02C7
10:40:19.671: Security analysis complete.
10:40:19.687: Ready
It also says PCM key is locked with a custom key.
I dont recall ever seeing that Gm os number. Are you using a custom os? If so, then you need to put it back to stock, then use efilive.
"If you can leave a black mark on the pavement, from the exit of one corner to the braking point of the next one, you have enough horsepower."
Theres the problem. I updated HPTuners reused a custom OS an it charged me another credit. I tried to use a stock tune and used up my last three credits as a vehicle vin tune. After I was charged these credits I went to run the tune then the software said the OS was out of date or something and still charged me the credits.
In short I am not going to give $99 to get credits to load a stock tune on my car.
That is another reason I am going to try my luck with EFI.
Does it sound like my PCM is permenately locked?
You could take it to the dealer and I believe they can flash it to stock, but that's not free either :( unless you have a hook up.
EDITED: to be PC:x
Last edited by kbracing96; April 28th, 2007 at 03:46 PM.
01 ECSB 1/2 ton 4x4 Forged 5.7 LS1 GMC
Custom KBracing front mounted, BW S480, intercooled turbo
I don't know if it would work, but you might try to just do a FULL write to your PCM with a stock base EFILive tune. Might write over your HPT custom OS.
01 ECSB 1/2 ton 4x4 Forged 5.7 LS1 GMC
Custom KBracing front mounted, BW S480, intercooled turbo
That wont work. He needs to put it back to stock using the hp cable he locked it with.
The Dealer wont be able to do it.
If he knew the exact key, then he could manually type that in, But i doubt the hp crew would do that for him.
"If you can leave a black mark on the pavement, from the exit of one corner to the braking point of the next one, you have enough horsepower."
Question is why in the hell is there a need to lock the friggen tune in the first place? It's his tune? He paid for it? Seems dumb to me but I'm old and a lot of crap is starting to look dumber as I age.
Elmer
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