Diagnostic Aids

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2008 GMC Yukon XL, 2008 GMC Yukon, 2008 Chevrolet Tahoe, 2008 Chevrolet Suburban, and 2008 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

The RAP/Spare relay is permanently soldered to the left I/P junction block and is non-serviceable.
The RAP mode for the radio and door modules is a separate function and will still operate properly.