GM Service Manual Online
For 1990-2009 cars only

Parameter

Operating Conditions

Expected Value

Definition

Ignition is ON, engine OFF, and vehicle is stationary

Antenna

--

Main

 

Audio Source

CD Mode Selected

CD

This parameter determines which mode the Infotainment is currently using.

Tuner Mode Selected

Tuner

Audio System

System On

On

This parameter determines if the Audio System is On or Off.

System Off

Off

Auxiliary Input

External Device Connected

Active

This parameter displays if their is an external device connected to the Infotainment unit.

External Device Not Connected

Inactive

Balance

Left 1 to 6

User Dependent

This parameter displays the current balance of the speaker on the left or right sides.

Right 1 to 6

User Dependent

Band

FM 1

FM 1

This parameter displays the currently selected Band.

FM 2

FM 2

FM ASM

FM ASM

AM

AM

AM ASM

AM ASM

Bass

STD

User Dependent

This parameter displays the current bass setting based off the user's selection.

+1 to +6

User Dependent

Battery Voltage

--

12 Volts

The scan tool displays 0-14 Volts.

The scan tool displays approximately 12 Volts when the ignition is On.

Beeps

Beeps activated

On

This parameter displays if the audio unit will beep when buttons are pressed.

Beeps deactivated

Off

Brightness

STD

User Dependent

This parameter displays the currently selected brightness based off the users selection.

-5 to +5

User Dependent

CD Error

Problem with Unit

Yes

This parameter displays if there is a current error with the audio unit.

No Problem with Unit

No

CD Player Status

Pause button pressed while CD paused

Play

This parameter displays the status of the CD Player.

 

Pause button pressed while CD playing

Pause

 

Audio system turned off or change of audio source

Stop

Track up button pressed

Track Up

Track down button pressed

Track Down

Reverse button pressed

Reverse

Cue button pressed

Cue

CD Special Play Mode

Repeat button pressed

Repeat Track

This parameter displays the last CD special play mode that was selected by the user.

Random button pressed

Random Track

Colour

--

Vehicle Dependent

This parameter displays a numeric value. This number corresponds to the colour of the infotainment unit display.

Contrast

STD

User Dependent

This parameter displays the current contract setting, based off the user's selection.

-5 to +5

User Dependent

Current CD

--

Audio CD

This parameter displays the type of disc inserted into the CD Player.

--

MP3

Current CD Type

CDDA

User Dependent

This parameter displays whether the compact disc is CDDA or MP3.

MP3

User Dependent

Current Track

1 to 30

--

This parameter displays the current track on the CD been played.

Date

1 to 31

--

This parameter displays the current date stored in the infotainment unit.

Day

Monday - Sunday

--

This parameter displays the current day of the week stored in the unit.

DDL Bass Attenuation

0 to 60 dB

User Dependent

This parameter displays the current dynamic distortion bass level.

DDL Setting

Default Setting

Off

 

User dependent

Cur 1 to Cur 3

DDL Volume

0 to 60 dB

0 dB

This parameter displays the current dynamic distortion volume level.

Dial Turns

Counts

1 Counts

This parameter displays the numbers of counts the dial has been turned.

Dial Type

Mode dial used

Mode

This parameter displays the last dial type to be used by the user.

Multi-function dial used

Multi-function

Fan speed dial used

Fan Speed

Driver temp dial used

Driver Temp

Display Format

--

12 Hour

This parameter displays the time format based on 12 hour or 24 hour format.

--

24 Hour

Display Illumination

1 to 100 %

User Dependent

This parameter displays the current illumination level based from the user's selection.

Drive Type

--

Single CD

This parameter displays the current drive type as selected by the user

Driver Identification

Programmed Key

Driver 1

This parameter displays the status of the current ignition key.

Programmed Key

Driver 2

Equalizer

On

User Dependent

This parameter displays if the user has turned On or Off the equalizer settings in the audio unit.

Off

User Dependent

Equalizer Boost

--

0

 

Equalizer Preset

--

On

This parameter displays the current preset for the equalizer.

--

Off

Fader

STD

User Dependent

This parameter displays the current settings for the fader based off the user's selection.

Front 1 to 6

User Dependent

Rear 1 to 6

User Dependent

Fascia Button

Depends on Last button pressed.

--

This parameter displays the last fascia button pressed during the last ignition cycle.

Field Intensity

--

0-300 dBuV

The scan tool displays 0-300 dBuV. The signal from the antenna is measured in dBuV.

Frequency

87.5 to 108.00 FM

User Dependent

This parameter displays the currently selected radio frequency.

522 to 1710 AM

User Dependent

Hazards

Hazard button pressed

Active

This parameter displays whether the hazard lamps have been activated.

Hazard button depressed

Inactive

Illumination

--

0-100%

 

Illumination Mode

--

Auto

 

Interior Illumination

--

0-100%

This parameter displays the interior illumination as a percentage. The highest percentage will have the interior lamps at their brightest.

Key Stuck

--

None

This parameter displays if their is currently a button stuck on the fascia plate.

Loudness

Loudness activated

On

This parameter displays if the loudness function has be turned On or Off by the user.

Loudness deactivated

Off

Month

--

Varies

This parameter displays the current month

Multipath

--

%

 

Multipath

--

Yes

 

--

No

Mute

Mute button pressed

On

This parameter displays if the audio unit mute button has been activated or deactivated.

Mute button depressed

Off

Navigation Audio Channel

--

Varies

This parameter displays the audio channel that is utilised for the navigation audio

Navigation

--

Activated

This parameter displays if the navigation is Activated or Not Activated.

--

Not Activated

Navigation Volume

--

dB

This parameter displays the correctly selected volume setting for the navigation system through the audio unit.

Play Time

--

hh:mm:ss

This parameter displays the play time of the CDDA/MP3.

Preset

1 to 6

User Dependent

This parameter displays the currently selected preset radio station.

Rear Aux

Rear aux activated

On

This parameter displays if the rear aux is On or Off

Rear aux deactivated

Off

Rear Controls

Rear controls activated

Active

This parameter displays if the rear seat controls are working correctly.

Rear controls deactivated

Inactive

Search Sensitivity

Local

User Dependent

This parameter displays the currently selected search sensitivity signal strength.

Distant

User Dependent

Auto

User Dependent

Single CD Loaded

CD Loaded into Unit

Yes

The scan tool will display whether their is a compact disc loading or not.

No CD Laded into Unit

No

Speed Dependent Volume

--

dB

This parameter displays the volume in dB of the infotainment unit dependent on the speed of the vehicle.

Speed Volume Curve

Default Setting

Off

This parameter displays the speed volume curve as defined by the user

User Settings

Cur 1 to Cur 5

Stereo Status

User dependent

Mono

This parameter displays if the audio system on stereo or mono mode based on the user's selection.

User dependent

Stereo

System Power Mode

Ignition is in OFF position

Off

This parameter displays the current ignition cycle the key is on.

Ignition is in ACC position

Accessory

Ignition is in RUN position

Run

Ignition is in CRANK position

Crank

Time

--

hh:mm:ss

This parameter displays the current time.

Total Track Time

--

hh:mm:ss

The scan tool will display the total time of the current song.

Treble

STD

User dependent

The scan tool will show the current treble setting as selected by the user.

-6 to +6

User dependent

Vehicle Speed

--

km/h

This parameter indicates the vehicle speed calculated by the control module based on an input from the vehicle speed sensor (VSS). The scan tool will display a high value at higher vehicle speeds, and a low value at lower vehicle speeds.

Voice In

Voice in activated

Active

 

Voice in deactivated

Inactive

Volume

0 to 40

User dependent

The scan tool will show the current user selection.

Year

2000 to 2099

--

The scan tool will show the current year.