GM Service Manual Online
For 1990-2009 cars only
Amplifier: The scan tool displays Present/Not Present. The Amplifier data parameter refers to the Class 2 message that the remote amplifier is or is not present.

Amplifier Type: The scan tool displays Bose/Non-Bose. The Amp Type data parameter refers to the Class 2 message that identifies the remote amplifier as a Bose or Non-Bose amplifier.

Antenna Power: The scan tool displays On/Off. The Antenna Power parameter displays On or Off when Antenna Power is present/not present respectively.

Balance: The scan tool displays % percent. The Balance data parameter refers to the right to left audio output balance in percent .

Bass: The scan tool displays % percent. The Bass data parameter refers to the percentage of bass commanded by the radio control head.

Cassette Inserted: The scan tool displays Yes/No. The Cassette Inserted data parameter refers to the presence of a cassette tape in the cassette player.

Cassette Metal: The scan tool displays Metal/Not Metal. The Cassette Metal data parameter refers to the whether or not the inserted cassette tape is of metallic composition.

Cassette Side: The scan tool displays Top/Bottom. This data parameter indicates the side of the installed cassette that is currently being read by the tape player.

CD Changer: The scan tool displays Connected/Not Connected. The module displays Connected when the CD sense wire has been grounded to signal that a remote CD changer is present.

CD Inserted: The scan tool displays Yes/No. This data parameter indicates whether the CD player recognizes an inserted disc.

Chime: The scan tool displays On/Off. This data parameter indicates the commanded state of operation of the chime function.

Fade: The scan tool displays % percent. This data parameter refers to the front to back audio output Fade in percent .

Fan Control: The scan tool displays On/Off. This data parameter indicates the commanded state of the radio cooling fan.

Ignition Since Current DTC: The scan tool displays Cycles. This data parameter indicates the number of ignition cycles since a current DTC was set.

Phone: The scan tool displays Present/Not Present. This data parameter indicates if the radio detects the presence of a cellular telephone.

Source: The scan tool displays Off/Tuner/CD/Cassette.This data parameter indicates the source that is operating.

Theft Armed: The scan tool displays VIN/No VIN. The scan tool displays VIN when the theft mode has been turned ON by recognizing a valid VIN .

Theft Lock: The scan tool displays Locked/Unlocked. The scan tool displays Locked when the radio receives the incorrect VIN number from the PCM across Class 2 lines.

Treble: The scan tool displays % percent. This data parameter indicates the amount of treble in percent selected at the radio.

Volume: The scan tool displays % percent. This data parameter indicates the amount of volume (in percent) selected at the radio.