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Test L: Keyless Entry Does Not Program (Luxury)

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2000 GMC Yukon, 2000 GMC C3500 HD, 2000 Chevrolet Tahoe, 2000 Chevrolet Pickup, and 2000 Chevrolet Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install RADIO fuse. Turn ignition on. Using DVOM, measure voltage between connector C304 terminal C9 (Yellow wire) and ground. See Figure . If battery voltage exists, go to next step. If battery voltage does not exist, go to step  3 .
  2. Check for open in Yellow wire between connector C304 and Body Control Module (BCM). If problem was found, go to next step. If problem was not found, go to step  4 .
  3. Repair open in Yellow wire between connector C304 and BCM. After repair, recheck system.
  4. Turn ignition on. Using DVOM, measure voltage between connector C304 terminal G2 (Pink wire) and ground. See Figure . If battery voltage is present, go to next step. If battery voltage is not present, go to step  6 .
  5. Check for open in Pink wire between connector C304 and BCM. If problem was found, go to next step. If problem was not found, go to step  7 .
  6. Repair open in Pink wire between connector C304 and BCM. After repair, recheck system.
  7. Replace BCM. See appropriate BODY CONTROL MODULES article. After repair, recheck system.
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