Use the scan tool data display values and definitions information in order to assist in diagnosing vehicle malfunctions. Compare the vehicles actual scan tool data with the typical data display value table information. Use the information in order to aid in understanding the nature of the concern when the vehicle data does not match the typical data display values.

The scan tool data values were taken from a known good vehicle under the following conditions:

BCM Option config. No.: This is the body control module (BCM) option configuration number.

Calibration ID: This information refers to how the BCM is calibrated. This information is for assembly plant use only.

Ignition 0 Input: The BCM uses this data in order to determine the position of the ignition switch. Active is displayed when the ignition switch is in the Run or ACCY position.

Ignition 1 Input: The BCM uses this data in order to determine the position of the ignition switch. Active is displayed when the ignition switch is in the Run or CRANK position.

Ignition 3 Input: The BCM uses this data in order to determine the position of the ignition switch. Active is displayed when the ignition switch is in the Run position.

Key in Ignition: This information refers to whether or not the ignition key is inserted into the ignition switch. The BCM uses this data to perform chime functions. Yes is displayed when the key is inserted into the ignition switch.

Last 4 Dig of GM Part No.: This is the last 4 digits of the BCM part number that is currently in the vehicle.

Last 4 Digits of SDM Part Number: This is the last four digits of the inflatable restraint sensing and diagnostic module (SDM) part number that is currently in the vehicle.

Year Module Built: This is the year that the BCM was built.