WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.

8 Digit GM Part Number: The scan tool displays the 8 digit BCM part number for service identification.
Electronics Battery Fd: The scan tool displays 0.0-25.5 volts. Electronics Battery Fd represents the system voltage measured by the BCM at its battery feed input.
Ignition 0 (Data): The scan tool displays 0.0-25.5 volts. The Ignition 0 voltage represents the system voltage measured at the BCM Ignition 0 feed input.
Ignition 0 (Inputs): The scan tool displays Active/Inactive. The scan tool displays Active when the ignition switch is in ACCY or RUN positions.
Ignition 1: The scan tool displays Active/Inactive. The scan tool displays Active when the ignition switch is in RUN or START positions.
Ignition Accessory: The scan tool displays Active/Inactive. The scan tool displays Active when the ignition switch is in ACCY or RUN positions.
Key In Ignition: The scan tool displays Active/Inactive. The scan tool displays Active when the ignition key is inserted into the ignition switch.
Park/Neutral Switch: The scan tool displays Active/Inactive. The scan tool displays Active when the shift lever is in the Park or Neutral positions.

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