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 MANUALSCHEVROLET2003CHEVY EXPRESS G2500, VAN CARGO EXTENDED, 6.0 UREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 708 (KEYLESS ENTRY SYSTEM AND REMOTE FUNCTIONS)
2003 Chevrolet Chevy Express G2500, Van Cargo Extended, 6.0 U
Section 708 (Keyless Entry System And Remote Functions)
2003 Chevrolet Chevy Express G2500, Van Cargo Extended, 6.0 USECTION Section 708 (Keyless Entry System And Remote Functions)
WARNING: This page is about a different car, the 2009 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
- Schematic and Routing Diagrams
- Diagnostic Information and Procedures
- Repair Instructions
- Ignition Lock Key Transmitter Antenna Replacement - Instrument Panel
- Remote Control Door Lock Receiver Replacement
- Garage Door Opener Programming - Universal (One LED)
- Garage Door Opener Programming - Universal (Three LEDs)
- Garage Door Opener Transmitter Replacement
- Remote Control Door Lock Transmitter Programming
- Description and Operation
- Garage Door Opener Description and Operation
- Keyless Entry System Description and Operation (without Accessory 2 Way remote)
- Notes
- Keyless Entry Transmitters
- Keyless Entry Antenna
- Remote Control Door Lock Receiver (RCDLR)
- Unlock Driver Door Only
- Unlock All Doors - Second Operation
- Lock All Doors
- Vehicle Locator/Panic Alarm
- Remote Vehicle Start (RVS), if Equipped
- Enable/Disable RVS
- Hood Ajar Switch
- RVS Circuit Description
- Keyless Entry Personalization
- Rolling Code
- Automatic Synchronization
- Keyless Entry System Description and Operation (with Accessory 2 Way Remote)
- Notes
- Keyless Entry Transmitters
- Keyless Entry Antenna
- Remote Control Door Lock Receiver (RCDLR)
- Unlock Driver Door Only
- Unlock All Doors - Second Operation
- Lock All Doors
- Vehicle Locator/Panic Alarm
- Remote Vehicle Start (RVS), if Equipped
- Enable/Disable RVS
- Hood Ajar Switch
- RVS Circuit Description
- Keyless Entry Personalization
- Rolling Code
- Automatic Synchronization
- Special Tools and Equipment
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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.