Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Scan Tool Data Definitions

SCAN TOOL DATA DEFINITIONS

8-Digit GM Part Number: scan tool displays an 8 digit number which indicates the GM part number of the module.

# of Fobs Programmed: The scan tool displays 1 Fob - 4 Fobs to indicate the number of keyless entry transmitters that are programmed for the system.

Calibration ID: scan tool displays a 4 digit number which indicates the calibration ID number of the module.

Invalid Transmitter: The scan tool displays More Than 10 or Less Than 10 which indicates how many times an invalid transmitter has been used in the vicinity of the vehicle.

Key Pressed on Fob: The scan tool displays Dr. Door Unlock, Door Lock, All Door Unlock, Trunk, or Fuel Door/Alarm which indicates which keyless entry transmitter button was last pressed.

Last Fob Used: scan tool displays Fob#1-Fob#4 which indicates the number of the last keyless entry transmitter used.

PROM ID: scan tool displays a 4 digit number which indicates the ID number of the PROM associated with the module.