Diagnostic Aids

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.

The SEO RAP relay is permanently soldered to the junction block-left I/P and is non-serviceable.
The RAP mode for the radio and door modules is a separate function and will still operate properly.
Use the DMM MIN/MAX function to capture/locate intermittent conditions.