8-Digit GM Part Number: The scan tool displays an 8 digit alphanumeric number. The part number of the module.

Amp Type: The scan tool displays the type of amplifier installed in the vehicle, Bose/Non-Bose.

Antenna Enable: The scan tool displays Active/Inactive.

Audio Device: The scan tool displays Null/Tuner/CD Player. The radio detects the presence of the device that is operating.

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

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

Battery Voltage: The scan tool displays 0-18 Volts. The Voltage measured from the radio or amplifier's ignition positive voltage circuit to ground.

Cal. Module 1 Part No.: The scan tool displays the 8 digit part number of the module.

Cal. Module 1 Suffix: The scan tool displays the 2 position suffix of the module.

CD Changer: The scan tool displays Connected if a CD changer is detected or Not Connected if no CD changer is present.

CD Changer Disc Number: The scan tool displays which CD the changer is currently playing.

CD Changer Track Number: The scan tool displays the track number of the disc that is currently playing.

CD Inserted: The scan tool displays Yes or No. Whether a CD is loaded or not.

Chime Type: The scan tool displays the type of chime select such as fast.

Chime Speaker: The scan tool displays Front Left, Front Right, LF Woofer, Back Left, Back Right, RF Woofer. The selected chime speaker is displayed

Chime Volume: The scan tool displays 0-100%. The percentage at which the chime volume has been calibrated to.

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

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.

External Audio Device: The scan tool displays Connected/Not Connected. The radio senses the presence of an external audio device.

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

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

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

Microphone Level: The scan tool displays 0-100%. The percentage of microphone selected at the radio.

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

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

Noise Compensation: The scan tool displays On/Off. The selected switch position of the noise compensation system.

Operational S/W Part No.: The scan tool displays the 8 digit software part number of the module.

Operational S/W Suffix: The scan tool displays the 2 position software suffix of the module.

Personalization: The scan tool displays Driver 1/ Driver 2.

Phone: The scan tool displays wether or not a phone is present or not present.

Power Mode: The scan tool displays what power mode the module is on.

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

RSA: The scan tool displays Present/ Not Present. Present is displayed if rear seat entertainment control is installed in the vehicle.

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

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

Speed Compensated Volume: The scan tool displays Off/Low/Medium/High according to what the auto volume is set on the module.

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

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 #.

Theft Locked: The scan tool displays Locked/Unlocked. The scan tool displays locked when the radio receives the incorrect VIN number across Class 2 lines.

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

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

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

Vehicle Communications Interface Module

8-Digit GM Part Number: This displays the part number for the vehicle communication interface mode (VCIM).

Component Serial Number 13-16: This is the third partition of the serial number.

Date: This is the date as synchronized with global positioning system (GPS) satellites.

Electronic Serial Number: This is the electronic serial number stored in the VCIM which is used by the OnStar® Call Center.

GPS Signal: This displays the status of a received GPS signal.

Julian Date of Build: This displays the day of the year the module was built.

Module ID: This displays the version of OnStar® which the vehicle is equipped with.

Signal Strength: This displays a calculated value for cellular reception signal strength. A higher number indicates a stronger signal.

Signal Type: This displays whether the Generation 6 OnStar® VCIM is currently operating in a digital or analog market.

Software ID: This displays the 3-digit number of the software version used on the OnStar® VCIM.

Time: This displays the time as synchronized with GPS Satellites.

Transceiver ID: This displays the ID number of the cellular tower that the OnStar® VCIM is using for cellular signal.

VCI Module Station ID: This is the station identification number stored in the VCIM which is used by the OnStar® Call Center.

Year Module Build: This displays the year the module was built.