GM Service Manual Online
For 1990-2009 cars only

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

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 I.D.

Module 2

Alpha-numeric

Generation 4/5/6

Signal Strength

Signal Strength

0-100

68

Signal Type

Signal Strength

Analog/Digital

Digital

Software I.D.

Module 1

3 Digits

Varies

Time

GPS Data

Time

HH:MM:SS

Transceiver ID

Signal Strength

2-5 Digits

Varies

VCI Module Station I.D.

Module 2

10 Digits

Varies

Year Module Built

Module 1

4 Digits

Varies