Circuit/System Testing
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Chevrolet Tahoe, 2007 Chevrolet Suburban, and 2007 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
- Verify the system works with a known good remote
- If the known good remote operates properly, replace the suspect remote.
- Operate the radio and turn on the rear seat audio (RSA). Verify the remote headphones operate normally.
- If the remote headphones do not operate properly, go to Video Entertainment System Wireless Headphone Inoperative .
- Install a scan tool, monitor the button presses in the radio data display. Verify the radio responds to the remote when the buttons are pressed.
- If the radio does not respond, test the remote infra-red signal circuits for an open, short to ground or short to B+. If the infra-red signal circuits test normal replace the radio.
IMPORTANT:
Test or replace the remote batteries before performing the circuit/system test.