you try using your other key, or locking and unlocking with the fob? shouldnt be on obviously, maybe still something caused your computer to loose the program. i would try the reset after those things. after that i dont know.
PASSKEY 3 AND
In this system, the vehicle theft
deterrent functions are provided by
the theft deterrent control module.
There is a transponder embedded in
the head of the key that becomes
energized by the exciter coils in the
ignition lock cylinder when the
ignition switch is turned on. The
energized transponder now transmits
a signal containing a unique value to
the theft deterrent control module. If
the module accepts this value, then
there is an additional communication
that takes place between the module
and the key. If the module and the
key agree, then the module sends the
fuel enable password to the PCM. If
the PCM recognizes the password,
then the vehicle starts and runs
If any of the communication
between the module and the key is
incorrect or the PCM does not
recognize the password, then the fuel
injectors are disabled.
The ignition key is a normal
looking key with no visible contacts
as in the Passkey or VATS systems.
The transponder is located in the key
head. The transponder value is fixed
and cannot be changed. These keys
are usually identified by the letters
PK3, or PK3+ stamped into the steel
body. A relearn will be necessary if
any of the following have been
replaced: any key, the theft deterrent
control module or the powertrain
control module (PCM).
When the theft control module is
being replaced, the module will learn
the existing keys immediately.
However, the PCM must learn the
new fuel enable password from the
new module. If you are replacing a
PCM with a PCM that has been used
in another vehicle or has been
remanufactured, then a relearn must
be performed in order for the PCM to
learn the fuel enable password. Keep
in mind that when you perform a
relearn on this system, all previously
learned keys will be erased from the
theft deterrent control module’*
memory. Any additional keys may be
relearned immediately after the first
relearn has been performed by
inserting the additional key and
turning the ignition switch to the
“On” position within ten seconds of
removing the previously learned key.
In order to initiate the relearn
1. Insert a master key (black
head) into the ignition switch.
2. Turn to the “On” position
without starting the engine. The
security light should illuminate and
3. Wait approximately 10 minutes
or until the security light turns off.
4. Turn off the ignition switch and
wait 5 seconds.
5. Repeat steps 2 through 4 two
more times with the same key.
6. Turn the ignition off. The
vehicle will now learn the key
transponder information on the next
7. Start the vehicle. If vehicle
starts and runs normally, and
security light is off, the relearn is
If additional keys are to be
8. Turn the vehicle off.
9. Insert the next key to be
learned and turn the ignition switch
to the “On” position within 10
seconds of removing the previously
10. Wait for the security light to
turn off. It should happen quickly.
You may not even notice the light
come on, because it will learn the key
11. Repeat steps 8 through 10 for
any additional keys.
1998 Bonneville SSE
2007 Monte Carlo LT-KYB, Clarion, Polk audio, Kicker
1999 Yukon SLE-KYB, Air lift, Reese dual-cam, Tekonsha
1987 Firebird-355/th400-nothing stock