GM Service Manual Online
For 1990-2009 cars only
Antenna Enabled: The scan tool displays Active/Not Active. The status of the antenna.

Balance: The scan tool displays a numeric value. This data parameter refers to the right to left audio output balance with a range from -50 to +50.

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

Battery Voltage: The scan tool displays the voltage level of the battery.

Cassette Inserted: The scan tool displays Yes/No. Yes is displayed when a cassette is inserted and No when one is not.

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

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

CD Inserted: The scan tool displays Yes/No. This data parameter indicates whether or not a CD is inserted.

Fade: The scan tool displays a numeric value. This data parameter refers to the front to back audio output fade with a range from -50 to +50.

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

Signal Strength: The scan tool displays dB (decibel). This data parameter indicates the strength of the tuned frequency in dB.

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

Theft Armed: The scan tool displays No VIN/Learn VIN. This data parameter indicates if the radio has learned the VIN of the vehicle.

Theft Lock: The scan tool displays Locked/Unlocked. The scan tool displays Locked when the radio receives the incorrect VIN number from the class 2 serial data circuit.

Treble: The scan tool displays % (percent). This data parameter refers to the percentage of treble commanded by the radio.

Volume: The scan tool displays % (percent). This data parameter refers to the percentage of volume commanded by the radio.