My ignition on my 1999 Tahoe was vandalized, and the Anti-theft is
after my ignition was vandalized, Im worried about the anti-thef system being a problem starting my Tahoe. Is there anything special I haveto do after I replace my ignition?
crwdns2933947:0crwdne2933947:0
crwdns2930901:0crwdne2930901:0crwdns2933953:020crwdne2933953:0
crwdns2916016:0crwdne2916016:0
crwdns2933933:025crwdne2933933:0
crwdns2931729:0crwdne2931729:0:
after my ignition was vandalized, Im worried about the anti-thef system being a problem starting my Tahoe. Is there anything special I haveto do after I replace my ignition?
crwdns2933933:0920crwdne2933933:0
crwdns2931729:0crwdne2931729:0:
Your 1999 Tahoe may be equipped with GM's Vehicle Anti Theft System or VATS. The VATS system is composed of a set of contatcs integrated into the ignition carrier, which reads the unique resistance value of a resistor embedded within the key.
When you attempt to start the vehicle the Tahoe's VATS module reads the resistance value from the key. If it does not match the programmed value the VATS module will command the Powertrain Control Module (PCM) to disable the injectors and the spark system.
If you change out your ignition tumbler, you will have to use the new keys, which contain different resistance values! This will prevent your Tahoe from starting.
But all hope is not lost. The most expensive and easiest option would be to have a dealer change out the ignition and use their Tech2 tool to reprogram the VATS module to the new keys. This takes less than 10 minutes.
The cheaper and more time-consuming option is to attempt to use the owner key re-learn procedure. The steps are as follows.
Good luck! Keep us posted.
crwdns2933955:0crwdne2933955:0
crwdns2935735:0crwdne2935735:0
crwdns2935737:0crwdne2935737:0
crwdns2918042:0crwdne2918042:0
crwdns2935739:0crwdne2935739:0
crwdns2918044:0crwdne2918044:0
crwdns2935741:0crwdne2935741:0
crwdns2944259:01crwdnd2944259:01crwdne2944259:0