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There are several other system
modules & computers throughout the cars. These are just a few of them
shown.
VATS (Vehicle Anti Theft System)
In 1989 (1988 in a GTA &
Corvette), GM introduced their VATS (Vehicle Anti Theft System) into the
F-body. The VATS system used a security key, that possessed 1 of 15
different key codes, a VATS module and a starter disable relay. The
security key let the VATS module know that the correct key was in the
ignition. If an incorrect key was inserted, or missing, the VATS module
would disengage the starter's solenoid and then shut down a sine wave signal to
the ECM/PCM to shut down the fuel injectors. This system is very difficult
to bypass and is one of the best security systems on the market. All of
the 90 and newer ECMs have the security system encoded into the PROM or PCM,
facilitating a custom chip or reprogramming for removal.
Keyless Entry System & BCM
in 93, GM offered a keyless entry
system as an option in all F-bodies. This system uses a keyless entry box
and a remote to lock & unlock the doors, along with a hatch release.
In 1996, the vehicles were then offered with an alarm. 93-95 models use a
keyless entry box, while the 96 and newer models use a BCM (Body Control Module)
which ties all the electronics in the vehicle into 1 module. 93-95
vehicles without the keyless entry system can be converted by adding the box and
corresponding door wiring harness. 96 and newer models just need to be
programmed.
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93-95 Keyless Entry Module |
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96-02 BCM, Body Control Module |
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88-92 VATS module (PASSKEY) |
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93-95 VATS module (PASSKEY) |
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***Note -
Electrical items carry no warranty and are not returnable. We test as many
units as possible.
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