2000 Chevrolet Express 3/4 Ton Van V8-305 5.0L VIN M SFIFACTORY OEM SERVICE PROCEDURE

Transmitter Programming

Factory service manual diagram



1. Ground pin 4 to pin 8 of the data link connector.
2. Press and hold the LOCK and UNLOCK buttons simultaneously, on the first transmitter to be programmed until the locks cycle (approximately 10 seconds).
The receiver will respond by locking/unlocking all of the doors.
3. Press any button on the next transmitter to be programmed.
^ The receiver will respond by locking/unlocking all of the doors.
^ Repeat step 3 for all the transmitters that are to be programmed (up to 4 transmitters can be programmed).
^ Do not wait more than 1 minute between programming the transmitters or the receiver will require holding the lock/unlock buttons for 15 seconds instead of 2 seconds.
4. Remove the ground applied from pin 4 to pin 8 of the DLC.
5. The transmitter operation is verified by locking and unlocking the doors.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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