Security system

Tiny
NICOLE ROCHELL MARTINEZ
  • MEMBER
  • 2002 CHEVROLET MONTE CARLO
  • 3.8L
  • V6
  • 2WD
  • AUTOMATIC
  • 150,000 MILES
I have been through almost every single security bypass and now it will not let me reuse anything that worked before. I was told that adding a resistor to my ignition wires would solve the problem. What about programming a new key fob? I was only given one key when I bought the car, no fobs.
Saturday, June 11th, 2022 AT 11:27 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,861 POSTS
Yes, the fobs help reset the system here is a guide that will help you program new fobs. Also, I have included instructions in the diagrams below for your particular car. You can get new fobs from Amazon.

https://www.2carpros.com/articles/how-to-re-program-a-key-remote-fob

TRANSMITTER PROGRAMMING

IMPORTANT: All transmitters which are to be recognized by the remote-control door lock receiver (RCDLR) must be programmed in a single programming sequence. If the system is placed in program mode it will erase all previously programmed transmitters upon the receipt of the programming signal from the first transmitter. Up to 4 transmitters can be programmed. Do not operate or program the transmitters in the vicinity of other vehicles that are in the keyless entry program mode. This prevents the programming of the transmitters to the incorrect vehicle.

1. Install a scan tool.
2. Turn ON the ignition, with the engine OFF.
3. Use the scan tool in order to access the Body Control Module (BCM) Special Function: Program Key Fobs.
4. Press the START soft key on the scan tool.
5. Press and hold the LOCK button and the UNLOCK button simultaneously on one transmitter. After a delay of 5-10 seconds, the locks will cycle in order to confirm the programming of that transmitter.

IMPORTANT: The scan tool must stay connected until all of the transmitters are programmed.

6. Repeat the previous step in order to program up to 4 transmitters.
7. Remove the scan tool.
8. Operate the transmitter functions in order to verify correct system operation.

Let us know what happens and please upload pictures or videos of the problem.
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Sunday, June 12th, 2022 AT 1:11 PM

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