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

Communication Interface Module

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

15258785

Component Serial Number 13-16

Module 1

4 Digits

Varies

Date

Data

Date

DD/MM/YYYY

Electronic Serial Number

Module 2

11 Digits

03600326309

GPS Signal

GPS Data

Yes/No

Yes

Julian Date of Build

Module 1

3 Digits

Varies

Module ID

Module 2

Alpha-numeric

Generation 7

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

Numeric

020000141

Year Module Built

Module 1

4 Digits

2005

Digital Radio Receiver

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON/Engine OFF/Radio ON

Battery Voltage

Data

Volts

Varies

Ignition Counter

Data

Numeric

Varies

Power Mode

Data

Alphanumeric

Run

Radio

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

93807890

Component Serial Number 13-16

Module 1

4 Digits

0007

Date

GPS Data

Date

DD/MM/YY

Electronic Serial Number

Module 2

11 Digits

16832516749

GPS Signal

GPS Data

Yes/No

Yes

Julian Date of Build

Module 1

3 Digits

067

Module ID

Module 2

Alpha-numeric

Generation 6

Signal Strength

Signal Strength

0-100

68

Signal Type

Signal Strength

Analog/Digital

Digital

Software ID

Module 1

3 Digits

146

Time

GPS Data

Time

HH:MM:SS

Transceiver ID

Signal Strength

2-5 Digits

Varies

VCI Module Station ID

Module 2

10 Digits

0002086783

Year Module Built

Module 1

4 Digits

2001