GM Service Manual Online
For 1990-2009 cars only
8-Digit GM Part Number: The scan tool displays an 8 digit alphanumeric number. The part number of the module.

Auto Volume Control St: The scan tool displays Active/Inactive. The state of the auto volume control function.

Band Status: The scan tool displays AM/FM1/FM2. The current band that the radio is in.

Calibration ID: The scan tool displays 0-9999. The number designating what calibrations the radio contains.

Clock Status: The scan tool displays 12hr or 24hr.

Personalization Status: The scan tool displays Driver1/Driver2. The memory position the driver has selected as received by Class 2 lines.

DSP Status: The scan tool displays the equalization setting selected (talk, driver seat, spacious, or OFF).

Ign. Cycles Since Last DTC: The scan tool displays the number of ignition cycles since the last DTC was set.

Julian Date of Build: The scan tool displays 0-999. The month and year that the module was built.

Language: The scan tool displays what language is being displayed on the radio.

Long Wave Status: The scan tool displays Present/Not Present. Present will be displayed if long wave is installed.

Navigation Software Version: The scan tool displays the version of software.

New VIN Counter: The scan tool displays 0-99. The number of times the radio has been in different vehicles.

Point of Sale: The scan tool displays the country the vehicle was sold in.

Preset Status: The scan tool displays Home/Away. Whether the radio is set to home settings or away settings.

PROM ID: The scan tool displays 0-9999. The identification number of the radios internal PROM.

Region: The scan tool displays the region the radio is set for (US, Asia, Australia, Europe, Saudi).

Signal Strength: The scan tool displays 0-255 decibels. The strength of the station that the radio is tuned to.

Slave PROM ID: The scan tool displays 0-9999. The identification number of the radios internal PROM.

Source Status: The scan tool displays which sound source has been selected (Tuner, Cassette, CD/MD, CDX, Phone, Radio Off).

Theft Lock Status: The scan tool displays Active/Inactive. The scan tool displays active when the radio receives the incorrect VIN number across Class 2 lines.

Total CDX Hours:  The scan tool displays 0-999 hrs. The total number of hours the CD/MD player has been used.

Total Radio Hours: The scan tool displays 0-999 hrs. The total number of hours the radio has been used.

TV Signal Strength: The scan tool displays 0-255 decibels. The strength of the station that the TV is tuned to.

Year Module Built:  The scan tool displays 1990-2020. The production year the module was manufactured.