Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2001EXPRESS 1 TON VAN V8-5.7L VIN RREPAIR AND DIAGNOSISACCESSORIES AND OPTIONAL EQUIPMENTANTITHEFT AND ALARM SYSTEMSKEYLESS ENTRYKEYLESS ENTRY TRANSMITTERSERVICE AND REPAIRTRANSMITTER PROGRAMMING (EXPORT - INCLUDING CANADA)
2001 Chevrolet Express 1 Ton Van V8-5.7L VIN R
Transmitter Programming (Export - Including Canada)
2001 Chevrolet Express 1 Ton Van V8-5.7L VIN RSECTION Transmitter Programming (Export - Including Canada)
An override code is used to disable the Vehicle Immobilizer Module (VIM) and allow keyless entry transmitter programming. The override code is a 5 digit number which is entered into the VIM at the factory. The VIM override code may be entered manually or with a scan tool.
To determine the code and enter the override mode manually, perform the following:
1. Insert the ignition key into the ignition lock cylinder.
2. Cycle the ignition ON, OFF, ON within 2 seconds. The security indicator will flash the number of times equal to the first digit of the override code.
3. Press the brake pedal to enter the digit. The security indicator will twelve times within 4 seconds in order to verify the input of the digit.
4. Repeat the previous step to enter the next 4 digits of the override code as the digits are flashed by the security indicator.
If the incorrect override code is entered the security indicator will turn off immediately and the VIM does not enter the override mode. When the correct override code is entered the security indicator will illuminate for approximately 10 seconds. The immobilizer is inactive and the transmitters may be programmed. Perform the following while the security indicator is illuminated in order to program the transmitters:
1. Press any button on the first transmitter.
2. Pause for at least 1 second.
3. Press the same transmitter button a second time. The security indicator will flash 12 times to verify successful programming of the transmitter and then remain illuminated for approximately 10 seconds.
4. Perform the previous steps in order program up to 3 additional transmitters.
To determine the code and enter the override mode manually, perform the following:
1. Insert the ignition key into the ignition lock cylinder.
2. Cycle the ignition ON, OFF, ON within 2 seconds. The security indicator will flash the number of times equal to the first digit of the override code.
3. Press the brake pedal to enter the digit. The security indicator will twelve times within 4 seconds in order to verify the input of the digit.
4. Repeat the previous step to enter the next 4 digits of the override code as the digits are flashed by the security indicator.
If the incorrect override code is entered the security indicator will turn off immediately and the VIM does not enter the override mode. When the correct override code is entered the security indicator will illuminate for approximately 10 seconds. The immobilizer is inactive and the transmitters may be programmed. Perform the following while the security indicator is illuminated in order to program the transmitters:
1. Press any button on the first transmitter.
2. Pause for at least 1 second.
3. Press the same transmitter button a second time. The security indicator will flash 12 times to verify successful programming of the transmitter and then remain illuminated for approximately 10 seconds.
4. Perform the previous steps in order program up to 3 additional transmitters.
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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.