GM Service Manual Online
For 1990-2009 cars only
8-Digit GM Part Number: The scan tool displays an 8 digit alphanumeric number. The part number of the module.

AM Distant Stop Level: This is the stopping level for the seek/scan feature when set to distant mode.

AM Local Stop Level: This is the stopping level for the seek/scan feature when set to local mode.

AM Pass A Stop Level: This is the first pass stopping level for the seek/scan feature. If nothing is found above this level, the radio will then go to the AM Pass B Stop Level.

AM Pass B Stop Level: This is the second pass stopping level for the seek/scan feature.

Antenna: The scan tool displays if the antenna is Active/Inactive.

Auto Volume Control: The scan tool displays On/Off. The state of the auto volume control function.

Balance Control: The scan tool displays 0-255 counts. The amount of left to right balance selected.

Bass Control: The scan tool displays 0-255 counts. The amount of bass selected.

Battery Voltage: The scan tool displays 0-25.5 volts. The voltage measured from the modules battery positive voltage circuit to the modules ground circuit.

Build Sequence Number: The scan tool displays the sequence of build of the radio.

Calibration ID: The scan tool displays 0-9999. The number designating what calibrations the radio contains.

CD Focus Error: The scan tool displays 0-999. The number of CD focus errors the radio has recorded.

CD Load/Unload Error: The scan tool displays 0-999. The number of CD load/unload errors the radio has recorded.

CD Spindle Servo Error: The scan tool displays 00-999. The number of CD spindle servo errors the radio has recorded.

CD Type: The scan tool displays Audio or CDROM. The type of CD loaded in the single CD player.

CD/Map Inserted: The scan tool displays Yes or No. Whether a CD is loaded in the single CD player or not.

Center IP Mid Range: The scan tool displays On/Off. The state of the speaker output.

Componet Serial Number: The scan tool displays the serial number of the module.

Component Serial No. 12: The scan tool displays 0-9. The second portion of the serial number.

Component Serial No. 8-11: The scan tool displays 0-9999. The first portion of the serial number.

Day: The scan tool displays the day the software was created.

Digital Radio Antenna: This parameter indicates the amount of current being used by the digital radio antenna by measuring the voltage drop across an internal resistor. Early design modules support the mV reading while later design modules support a mA reading.

DSP Selected: The scan tool displays the equalization setting selected (talk, front/driver seat, ambience, spacious, or off).

Fade Control: The scan tool displays 0-255 counts. The amount of front to rear fade selected.

FM Distant Stop Level: This is the stopping level for the seek/scan feature when set to distant mode.

FM Local Stop Level: This is the stopping level for the seek/scan feature when set to local mode.

FM Pass A Stop Level: This is the first pass stopping level for the seek/scan feature. If nothing is found above this level, the radio will then go to the FM Pass B Stop Level.

FM Pass B Stop Level: This is the second pass stopping level for the seek/scan feature.

ICDX Access Error: The scan tool displays 0-999. The number of ICDX access errors the radio has recorded.

ICDX Data Read Error: The scan tool displays 0-999. The number of ICDX read errors the radio has recorded.

ICDX Focus Error: The scan tool displays 0-999. The number of ICDX focus errors the radio has recorded.

ICDX Mechanical Error: The scan tool displays 0-999. The number of ICDX mechanical errors the radio has recorded.

Ignition Counter: The scan tool displays the number of ignition cycles.

Ign. Cycles Since Last: The scan tool displays the number of ignition cycles since the last DTC was set.

LF Full Range: The scan tool displays On/Off. The state of the speaker output.

LF Tweeter: The scan tool displays On/Off. The state of the speaker output.

LF Tweeter - Door: The scan tool displays On/Off. The state of the speaker output.

LR Full Range: The scan tool displays On/Off. The state of the speaker output.

Manufacturing Shift Inf: The scan tool displays the shift information for the build of the radio.

Manufacturing Site: The scan tool displays the site code where the unit was manufactured.

Microphone High: The scan tool displays 0-255 counts. The amount of noise measured in the vehicle. This is the higher of two measurements. Once Microphone Low has reached the limit, noise is then measured in Microphone High.

Microphone Low: The scan tool displays 0-255 counts. The amount of noise measured in the vehicle. This is the lower of two measurements. Once this has reached the limit, noise is then measured in Microphone High.

Mid Control: The scan tool displays 0-255 counts. The amount of mid range selected.

Mono Volume Control: The scan tool displays 0-99 counts. The volume selected for the phone output.

Month: The scan tool displays the month the software was created.

Mute: The scan tool displays On/Off indicating the state of the mute button.

Mute Button: The scan tool displays On/Off indicating the state of the mute button.

New VIN Counter: The scan tool displays 0-99. The number of times a new VIN number has been set in the radio.

Phone: The scan tool displays whether a phone is present/not present.

Phone Active: The scan tool displays if the phone is Active/Inactive.

Point of Sale: The scan tool displays the country the vehicle was sold in.

Power Mode: The scan tool displays the current power mode the module is operating in.

PROM ID: The scan tool displays 0-9999. The identification number of the radios internal PROM.

Radio ID: The scan tool displays the radio ID of the digital radio receiver.

Radio Left Channel: The scan tool displays On/Off. The state of the amplifier input.

Radio Right Channel: The scan tool displays On/Off. The state of the amplifier input.

Radio Type: The scan tool displays what level radio is currently installed in the vehicle.

Rear Subwoofer: The scan tool displays On/Off. The state of the speaker output.

Rear Subwoofer Coil 1: The scan tool displays On/Off. The state of the speaker output.

Rear Subwoofer Coil 2: The scan tool displays On/Off. The state of the speaker output.

Region Code: The scan tool displays the region the radio is set for.

RF Full Range: The scan tool displays On/Off. The state of the speaker output.

RF Tweeter: The scan tool displays On/Off. The state of the speaker output.

RF Tweeter - Door: The scan tool displays On/Off. The state of the speaker output.

RR Full Range: The scan tool displays On/Off. The state of the speaker output.

Signal Strength: The scan tool displays 0-255 decibels. The strength of the station that the radio is tuned to.

Software Version: The scan tool displays the version of software.

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

Tone Generator: The scan tool displays ON or OFF. The state of the chime.

Total Cassette Hours: The scan tool displays 0-999 hrs. The total number of hours the cassette player has been used.

Total CD Hours: The scan tool displays 0-999 hrs. The total number of hours the single CD has been used.

Total ICDX Hours: The scan tool displays 0-999 hrs. The total number of hours the CD changer has been used.

Total Radio Hours: The scan tool displays 0-999 hrs. The total number of hours the radio has been used.

Treble Control: The scan tool displays 0-255 counts. The amount of treble selected.

Ultrasonic Noise: The scan tool displays 0-999 counts. RDS data transformation information.

VIN Position 12: The scan tool displays the 12th digit of the learned VIN.

VIN Position 13: The scan tool displays the 13th digit of the learned VIN.

VIN Position 14: The scan tool displays the 14th digit of the learned VIN.

VIN Position 15: The scan tool displays the 15th digit of the learned VIN.

VIN Position 16: The scan tool displays the 16th digit of the learned VIN.

VIN Position 17: The scan tool displays the 17th digit of the learned VIN.

Volume Control: The scan tool displays 0-255 counts. The volume selected.

Wide Band Noise: The scan tool displays 0-999 counts. RDS data transformation information.

Year: The scan tool displays the year the software was created.