GM Service Manual Online
For 1990-2009 cars only

Radio Module Scan Tool Data Parameters

Parameter

System State

Expected Value

Description

Operating Conditions: Ignition ON/Engine OFF/Radio ON

Balance

--

Varies

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

--

Varies

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

Battery Voltage

--

Varies

The scan tool displays the voltage level of the battery.

Fade

--

Varies

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.

Ign. Since Current DTC

--

Varies

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

--

Varies

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

Treble

--

Varies

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

Volume

--

Varies

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