GM Service Manual Online
For 1990-2009 cars only
Table 1: Cellular Communication
Table 2: Radio
Table 3: Digital Radio Receiver

Cellular Communication

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON with Engine OFF

8-Digit GM Part Number

Module 2

8 Digits

Varies

Component Serial Number 13-16

Module 1

4 Digits

Varies

Date

GPS Data

Date

DD/MM/YY

Electronic Serial Number

Module 2

11 Digits

Varies

GPS Signal

GPS Data

Yes/No

Yes

Julian Date of Build

Module 1

3 Digits

Varies

Module ID

Module 2

Alpha-numeric

Varies

Signal Strength

Signal Strength

0-100

68

Signal Type

Signal Strength

Analog/Digital

Digital

Software ID

Module 1

3 Digits

Varies

Time

GPS Data

Time

HH:MM:SS

Transceiver ID

Signal Strength

2-5 Digits

Varies

VCI Module Station ID

Module 2

10 Digits

Varies

Year Module Built

Module 1

4 Digits

Varies

Radio

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON/Engine OFF/Radio ON

8-Digit GM Part Number

ECU ID Information

Numeric

Varies

Antenna Module

Radio Data 1

Enabled/Disabled

Enabled

Auto Volume Control

Radio Data 2

On/Off

Off

Band Status

Radio Data 1

AM/FM1/FM2

FM1

Battery Voltage Signal

Radio Data 1

Volts

11.8 Volts

Calibration ID

ECU ID Information

Alphanumeric

Varies

Cassette Deck H/W Level

Cassette Information

Numeric

Varies

Cassette Inserted

Cassette Information

Yes/No

No

Cassette Deck S/W Level

Cassette Information

Numeric

Varies

Cassette Tape Side

Cassette Information

Top/Bottom

Top

CD Changer H/W Level

CD Information

Numeric

Varies

CD Changer S/W Level

CD Information

Numeric

Varies

CD Inserted

Radio Data 1

Yes/No

No

CD Selected - ICDX

CD Information

None/Disc 1/Disc 2/Disc 3/Disc 4/Disc 5/Disc 6

None

Component Serial No. 13-16

ECU ID Information

Numeric

Varies

DRR

Radio Data 1

Present/Not Present

Present

ICDX

CD Information

Present/Not Present

Not Present

Ign. Cycles Since Last DTC

Radio Data 2

Numeric

Varies

Julian Date of Build

ECU ID Information

Numeric

Varies

Metal Tape Cassette

Cassette Information

Yes/No

No

Personalization Status

Radio Data 1

Unknown/Driver 1/Driver 2

Driver 1

Phone Signal

Radio Data 1

Present/Not Present

Present

Preset Status

Radio Data 1

Preset 1-6/Not a Preset

Not a Preset

PROM ID

ECU ID Information

Alphanumeric

Varies

Radio Signal Strength

Radio Data 1

dB

19 dB

RSE

Radio Data 1

Present/Not Present

Not Present

Source Status

Radio Data 1

Off/Cassette/ICDX/Tuner/DAB/SDAR/CD/DVD

Tuner

Theft Armed

Radio Data 1

Learned VIN/No VIN

Learned VIN

Theft Lock Status

Radio Data 1

Active/Inactive

Inactive

Total Cassette Hours

Cassette Information

Hours

Varies

Total CD Hours

CD Information

Hours

Varies

Total Radio Hours

Radio Data 1

Hours

Varies

Tuner Region

ECU ID Information

North America/Japan/ Australia/Saudi Europe/South America

North America

Volume Control

Radio Data 1

Counts

Varies

Digital Radio Receiver

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON/Engine OFF/Radio ON

8-Digit GM Part Number

Module Information

Alphanumeric

Varies

Battery Voltage

Data

Volts

12.2 Volts

Digital Radio Antenna

Data

mV

1400 mV

Electronic Serial Number

Electronic Serial Number

Alphanumeric

Varies

Ignition Counter

Data

Numeric

Varies

Julian Date of Build

Module Information

Numeric

Varies

Power Mode

Data

Run/Crank/Accessory/RAP/Off Awake

Run

Year Module Built

Module Information

Numeric

Varies