another passlock mystery

gmckid · May 1, 2013

what about getting key fob to work to turn security off?

bossier62guy · May 1, 2013

The code scanner you have is probably unable to read BCM codes and since that is specifically listed in the relearn procedure it may be causing you some issues. Where's Rob when you need him the most? I'll do some more digging but in the meantime how about going through the events that lead to this problem one by one again.

-truck was running fine before it sat up for a couple of months

-broke into the passengers door (battery was dead)

That's the type of thing I'd like to see....include anything and everything that happened during that time frame.

bossier62guy · May 1, 2013

what about getting key fob to work to turn security off?

Did you try to reprogram it? That battery must have gone to absolutely zero while it sat there.

Edited May 1, 2013 by bossier62guy

gmckid · May 1, 2013

the only thing I left out is I charged battery a few times thought it was still good checked at 12 v went dead again checked had 8v changed to crappy battery that had 12 volts today brand new battery.Two days ago removed drivers side window to remove door handle to swap out lock cylinder to make door lock work.there you have it.

Will look up reprogram for key fob there are a few different ones for this year.

Thanks again,wish I could buy you a beer.

bossier62guy · May 1, 2013

Here you go

fobsync.pdf

fobprogram.pdf

fobsync.pdf

fobprogram.pdf

bossier62guy · May 1, 2013

Is the security light blinking all the time?

gmckid · May 1, 2013

when ignition on yes when ignition off no

gmckid · May 1, 2013

tried to fix key fob no luck intructions say for 2wd I'm 4X4 any difference?

bossier62guy · May 1, 2013

tried to fix key fob no luck intructions say for 2wd I'm 4X4 any difference?

Naaa...when is the last time it worked? Battery? Had any ignition cylinder problems?

Edited May 1, 2013 by bossier62guy

gmckid · May 1, 2013

remote worked before battery died .Checked remote at dealership worked.Have to asume the the remote and security system are not coincidence they share same problem or remote can not be programed with security issues going on.Never had cylinder ignition problems.I give up need to start thinking of bypass any advice.Scanner I think is decent does abs and airbag its autotel.

bossier62guy · May 1, 2013

Yea you may be unable to program it due to the issue w/ the passlock system....I've read a little about bypassing it but I can't really offer any advice on it at this time. You'd be best off doing some searching about the subject. I'm going to go back and do a little more reading on the system....the bad part is that you can't hardly do dick as far as troubleshooting unless you have a tech2. Just for kicks check fuse "TBC" (10a) in the underhood fuse panel and fuse "IGN 1" (10a) in the panel left of the dash. They both send 12V to the BCM. I'm sure you've checked but make sure those battery cables are in good condition as well.

I don't doubt the Autotel is a decent scan tool but I don't think there is a hand held unit out there that will read the body control module codes but I could be wrong.

BTW.....if I open the door to my truck the security light is flashing....when i put the key in the run position all i have is a battery light. For whatever good that may be LOL.

Edited May 1, 2013 by bossier62guy

bossier62guy · May 1, 2013

Here's some interesting reading from a pissed off owner....

http://www.pissedconsumer.com/reviews-by-company/general-motors/gm-passlock-ii-system-has-major-inherent-design-flaws-20080502119601.html

gmckid · May 1, 2013

YOU ARE A BLOODY FUC...... GENIUS I TOOK MY TEST LIGHT TO ALL FUSES THE TBC FUSE ONLY LIT UP ON 1 SIDE OTHER SIDE DEAD FUSE DID NOT WANT TO COME OUT.FINALLY IT CAME IN 2 PIECES IT WAS ALL CORRIDED. BOOM STARTED AND KEPT RUNNING FIRST CLICK YAHHHHHHHHHHOOOOOO.

THANK YOU THANK YOU THANK YOU.

yOU ARE AWESOME AND A TRUE LONG DISTANCE FRIEND YOU REALLY HUNG IN THERE FOR ME.

THANK YOU

bossier62guy · May 2, 2013

I had just noticed that the TBC fuse fed power to both the BCM and the remote control door lock receiver and thought that could be a damn good possibility. I'm glad I could help you out.