Scan Tool Data Definitions

WARNING: This page is about a different car, the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Battery Voltage: The scan tool displays the value of the battery voltage.

Ignition 1: The scan tool displays Active when the ignition switch is in the RUN or CRANK position.

Ignition 3: The scan tool displays Active when the ignition switch is in the RUN position only.

Ignition Power Mode: The scan tool displays the position of the ignition switch. The scan tool displays Off, Run, Crank and Unknown. The word Unknown is displayed when the BCM can not determine the position of the ignition switch.

Julian Date: The scan tool displays the date that the body control module (BCM) was manufactured.

Key in Ignition: The scan tool displays Yes when the ignition key is fully inserted into the ignition switch cylinder. The BCM uses this data to control the chime feature.

Module Part Number: The scan tool displays the part number assigned to the BCM that is currently in the vehicle.

Software Design Suffix: The scan tool displays the version of the software part number in the BCM.

Software Part Number: The scan tool displays the software identification number in the BCM.