Anti-Theft System Help!
 

I have a 1997 Blazer and a few days ago I went out to get in it and my battery was dead....so we took it and had it fully charged, tested, and all that and put it back in. Everything works except it won't start still.....it doesn't even crank. So now it's sitting at the garage and the mechanic is trying to figure out what's wrong with it...hooked it to the machine and it came back with nothing on that part.

Is it possible that when the battery was taken out, it did something to the anti-theft system and now it thinks the vehicle is being stolen and has shut down the start-up?

Has anyone had this type of problem before and if so how did u fix it?

RE: Anti-Theft System Help!
 

there is no anti-theft system on that truck to my knowledge, (I have a 97 as well.) WHen mine wouldnt start, the battery didn't have a good connection. as the rubber around the battery cable was getting in the way.

RE: Anti-Theft System Help!
 

Yes, there's an anti-theft on mine...I got the Blazer used from an independent dealer and he doesn't know much about the vehicle so there was no help from him....the mechanic told me this afternoon that he thinks that it's the anti-theft as well, except now he's trying to figure out whether he can disengage it or not [&:]

RE: Anti-Theft System Help!
 

yes mine had one it had sumthin to do with the radio but you have to turn it on your self taking the battery out wont do it.

RE: Anti-Theft System Help!
 

tru turing key to on and letting it sit for 20 min. make sure window is down and battery is fine, door has to be closed. This resets the security system

RE: Anti-Theft System Help!
 

Tried that a couple days ago....didn't work....[:'(]

RE: Anti-Theft System Help!
 

[sm=sorry.gif] I got nothing else

RE: Anti-Theft System Help!
 

Well thanks for tryin lol maybe the mechanic will figure something out and let me know something tomorrow....i hope so cause it's awful cold taking my little one to the bus stop in the mornings lol

RE: Anti-Theft System Help!
 

I can imagine. my puppy doesn't like the cold, and he is covered with hair

RE: Anti-Theft System Help!
 

Is the security light flashing?
This is what I found for resetting the security system.
30 Minute Procedure
(1) Ensure that the battery is fully charged.
(2) Use a scan tool in order to clear the Passlock™ DTCs.
(3) Turn the ignition switch from the OFF position to the (4) CRANK position, and then to the (5) RUN position. The vehicle will start and then stall.
Leave the ignition ON until the security telltale turns OFF in 10 minutes.
Repeat Steps 3-5 for 2 more times (3 times total)
The Passlock™ controller will learn the new data on the next start attempt.
Use a scan tool in order to clear all DTCs.