Circuit/System Verification

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, 2012 Chevrolet Suburban, and 2012 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Ignition ON, compass ON, verify that there is a correct compass reading on the DIC.

If the compass is incorrect, refer to Compass Display Is Incorrect.
If the compass shows CAL, refer to Compass Displays CAL.
If the compass displays "- -" (dashes) or is blank, refer to Compass Displays No Heading.