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Posted on Jan 02, 2017
SOURCE: 1994 cadillace anti theft system
I just had this same problem with a '96 . do you have a vats key in your '94? you need to bypass the VATS system. read some of the blogs on this site and it will tell you how to do it. I fixed mine with a $2 resistor from radio shack.
Posted on Oct 12, 2008
disconnect battery for 24 hrs so the computer will reset and if that dont work take it to chevy dealer and have them reset it manually
Posted on Mar 27, 2009
you will have to take it to the dealer or a shop that does a lot of GM work. without a scanner and codes and service manual, you will not fix it.
Posted on Sep 23, 2009
SOURCE: My 1997 chevy cavalier has
The problem is not your computer. The problem is a defective PassLock cylinder. It is not reading your key correctly. The lock cylinder for your ignition reads a chip in your key and sends a digital signal to the computer to let the computer know that a valid key is being used to turn the ignition on. (This keeps some jerkwad from stealing your car by breaking the lock cylinder and starting the engine with a screwdriver.) When the security light starts flashing and the engine will not start, it is because the ignition switch was turned on and everything powered up but the passlock system did not read a valid key code. Replacing the passlock cylinder should fix your problem. This is pretty common.
Posted on Jan 08, 2011
sorry this is a dealer fix. but it could be as simple as programing a new key.
or it may need a new imoblizer module.
Posted on Apr 14, 2013
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