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HOMESERVICE MANUALSCHEVROLET2000CAB & CHASSIS C2500, 6.5 F, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1567 (KEYLESS ENTRY SYSTEM AND REMOTE FUNCTIONS)DIAGNOSTIC INFORMATION AND PROCEDURESKEYLESS ENTRY SYSTEM INOPERATIVECIRCUIT/SYSTEM TESTING
2000 Chevrolet Cab & Chassis C2500, 6.5 F, Automatic

Circuit/System Testing

2000 Chevrolet Cab & Chassis C2500, 6.5 F, AutomaticSECTION Circuit/System Testing
WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify that the transmitter is the correct transmitter for the vehicle.
    • If not the correct transmitter, replace the transmitter.
  2. Remove the battery from the transmitter. Verify that the battery voltage is greater than 2.8V.
    • If the voltage is less than 2.8V, replace the battery.
  3. Ignition ON, press each button on the transmitter. Verify that all of the scan tool Remote Command parameters change state when each button is pressed.
    • If one or more of the parameters do not change state, replace the transmitter.
  4. If the transmitter functions normally, replace the BCM.
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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.