wesfurgason
Newbie
I have a ‘00 k2500 ccsb that is stuck in theft mode. I’ve tried bypassing the security system and replacing the bcm but I can’t get the thing to come out of theft mode or start. Any suggestions?
Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.
If you've got a 98-up 400 it's got what GM will sometimes refer to as a BCM. Got the TDM ("theft deterrent module") as part of it, or they're interchanging the names, either way it's the black box with green socket about the size of a deck of cards/cigarette pack, under your dash right next to the DRL diode. It's part of the Passlock system.Gonna need more info.
Theft mode? You mean the security light is flashing?
How did you bypass security?
Also, 400's don't have a BCM (except 99/00 Esky and Denali) so I don't know what you replaced, but it wasn't that...
Yup, my experience too. My brother and Mom were thisclose to divorcing the Burb and me because of that F ing passlock. Our other 99 Burb never had the issue, but that was 9 years ago when it got wrecked. So that much time to not bounce around....If you've got a 98-up 400 it's got what GM will sometimes refer to as a BCM. Got the TDM ("theft deterrent module") as part of it, or they're interchanging the names, either way it's the black box with green socket about the size of a deck of cards/cigarette pack, under your dash right next to the DRL diode. It's part of the Passlock system.
OP - time to have a tuner get rid of Passlock from your PCM. Once it starts giving you trouble it doesn't stop until you get rid of it.. in my opinion, anyway.
Richard
I replaced the VATS. That’s what I tried bypassing as well. Yes it just won’t start because of thatGonna need more info.
Theft mode? You mean the security light is flashing?
How did you bypass security?
Also, 400's don't have a BCM (except 99/00 Esky and Denali) so I don't know what you replaced, but it wasn't that...
Do you think 99 Tahie would have it? What are the symptoms of this thing failing? And forgive my ignorance but what's the DRL diode? Or some more details on the location of this thing please?If you've got a 98-up 400 it's got what GM will sometimes refer to as a BCM. Got the TDM ("theft deterrent module") as part of it, or they're interchanging the names, either way it's the black box with green socket about the size of a deck of cards/cigarette pack, under your dash right next to the DRL diode. It's part of the Passlock system.
OP - time to have a tuner get rid of Passlock from your PCM. Once it starts giving you trouble it doesn't stop until you get rid of it.. in my opinion, anyway.
Richard
You did the relearn, correct?I replaced the VATS. That’s what I tried bypassing as well. Yes it just won’t start because of that
DRL is daytime running lights. I removed the little metal box under the dash to defeat them.Do you think 99 Tahie would have it? What are the symptoms of this thing failing? And forgive my ignorance but what's the DRL diode? Or some more details on the location of this thing please?