GM Service Manual Online
For 1990-2009 cars only

Radio

Parameter

System State

Expected Value

Description

Operating Conditions: Ignition in RUN, Radio ON

Balance

__

-50 to +50

The scan tool displays -50 to +50. The Balance between the right and left audio output.

Bass

__

0-100%

The scan tool displays 0-100%. The percentage of bass selected at the radio.

Battery Voltage

__

0-18V

The scan tool displays 0-18 Volts. The Voltage measured from the modules ignition positive voltage circuit to ground.

Fade

__

-50 to +50

The scan tool displays -50 to +50. The Fade between the front and rear audio output.

Ignition Since Current DTC

__

0-225

The scan tool displays 0-225 Cycles. The number of ignition cycles since a current DTC was set.

Midrange

__

0-100%

The scan tool displays 0-100%. The percentage of midrange selected at the radio.

Signal Strength

__

0-225

The scan tool displays 0-225 dB. The signal strength of the radio frequency.

Treble

__

0-100%

The scan tool displays 0-100%. The percentage of treble selected at the radio.

Volume

__

0-100%

The scan tool displays 0-100%. The percentage of volume selected at the radio.