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

Band Number: The scan tool displays the band selected by the radio.

Calibration ID: The scan tool displays the calibration ID for the module.

CD Changer: The scan tool displays whether a CD changer is present.

Channel Number: The scan tool displays the channel tuned by the radio.

Clock: The scan tool displays 12 hr. or 24 hr. clock status.

Driver Number: The scan tool displays whether driver 1 or 2 presets are selected by the radio.

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

Julian Date of Build: The scan tool displays the module date of build in total calendar days.

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

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 Settings: The scan tool displays which preset is being listened to.

Radio Audio Software Version: The scan tool displays the radio audio software version.

Region Code: The scan tool displays the region the radio is set for.

Signal Strength for Radio: The scan tool displays 0-255 decibels. The strength of the tuned radio station.

Source Selected: The scan tool displays the source of audio media being played.

Theft Lock: The scan tool displays theft lock status.

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

Year Model Built: The scan tool displays the module year built.