GM Service Manual Online
For 1990-2009 cars only

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: ignition ON, engine OFF.

Battery Voltage

Data

Volts

12.5

Ignition Accessory

Inputs

Active/Inactive

Active

Ignition 0

Inputs

On/Off

On

Ignition 1

Inputs

On/Off

On

Julian Date of Build

ID Information

3 digits

xxx

Key in Ignition

Inputs

Yes/No

Yes

Seed and Key Timer

Security Data

Seconds

0 - 2550 (10 Sec resolution)

Year Module Built

ID information

4 digits

xxxx

8 Digit GM Part Number

ID information

8 digits

xxxxxxxx