Ok, I have 99-2002 Fbody HPtuners. So today I drive down and meet a guy who has a LS1 conversion in a 2002 S10 truck. The engine and drivetrain are 2002, but the PCM is a 1999. When he had the conversion done, he sent the PCM to a place called Street and Performance or something like that. Well, it will barely run and the tune is way off, so I was going to tune it for him. I connect up my laptop and go to VCM FLASH, I clicked on the "GET VCM ID" button and it came up with all the ID numbers.. except where there is a BCC:____ in that box, after BCC: it read "yyyy" and then when I tried to read the PCM it said something along the lines of "security access denied" or something similiar and wouldn't let me read the PCM. I can connect up to the PCM and scan/log.. but it won't let me read it. Could the place that did his mail order tune have "locked" the PCM? How can I tell for sure? I told him that I "think" if he went to a GM dealer with a 2002 VIN they would reflash his PCM to stock 2002 specs into the 99 PCM.. can they do that? I have a 2002 VIN he can use. Any help will be greatly appreciated.


EDIT: after going over a few notes I wrote while I was down there today, it was giving me "Security Access Denied-Invalid Autorization Code"

 

Did he hook the BCC up completely when he did the conversion?

 

i would e-mail chris@hptuners and see what the deal is. maybe he has a solution. worst case scenario the guy has to get another ecu...

 

If you have the pro version you can flash it with a completely new program and start from scratch

 

I know this is a stupid question, but what is the BCC, I know it stands for Broadcast Code...? Here's a screenshot of when I get the VCM ID's off my car. Where my BCC has "DJZX" his has just "yyyy". How can I fix this and can he have just any year model LS1 FBody PCM flashed to a 2002 Fbody program? The error code it gives me is "Security access denied- Invalid authorization code"

 

You can flash it to whatever year you have support for and you will have to start from scratch. If the PCM is a 99+ it will take any program from 99 and up

 

Bump to see the outcome.

 

The PCM has been properly locked, the only way to unlock it is find the guy who locked it ask him to unlock it *or* desolder the flash chip.

Chris...

 

Was this lock done by HP Tuners Software? I have never seen a VCM locked by HP Tuners and then tried to read it back out.

I am just curious of the signature that it might leave like the BCC module code being yyyy or something similar.

 

It was a mail order tune in the PCM by "street and performance" I don't know what software they use. The guy has a new PCM that he is going to have flashed with a 2001 LS1 A4 program.

 

we don't touch the BCC

 

Possibly these guys... ? They do LS1 swaps. http://www.hotrodlane.cc/