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.

Battery Voltage Signal: The scan tool displays battery voltage.
Ext. LF Door Handle Switch: The scan tool displays Active/Inactive. The scan tool will display Active when the exterior driver door handle is pressed.
Ext. RF Door Handle Switch: The scan tool displays Active/Inactive. The scan tool will display Active when the exterior passenger door handle is pressed.
Ignition Mode Switch: Then scan tool displays Idle/Crank/Accy/Off. The scan tool displays the current status of the ignition mode switch.
Last Key Fob Used: The scan tool displays Fob 1/Fob2/Fob 3/Fob 4. The scan tool will displays the last key fob used. for any keyless entry function.
No. of Fob's Programmed: The scan tool displays 0/1/2/3/4. The scan tool will displays the number of key fobs currently programmed to the vehicle.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Scan Tool Data Definitions

Use the Manual With the Right Hardware

When to See a Mechanic

Rather have a pro handle this?