GM Service Manual Online
For 1990-2009 cars only

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition On/Engine Off

A/C Request

BCM Data

Yes/No

No

Accessory

BCM Data

On/Off

On

Battery Voltage

BCM Data

Volts

12.0 Volts

Brake Fluid Level Switch

BCM Data

On/Off

Off

BTSI Output

BCM Data

On/Off

On

Calibration ID

ID Information

--

00

Ignition 1

BCM Data

On/Off

On

Key In Ignition

BCM Data

On/Off

On

Last 4 Digits of GM Part #

ID Information

--

2607

Last 4 Digits of SDM Part #

ID Information

--

4098

Low Coolant Level

BCM Data

On/Off

Off

Model Year

ID Information

--

2000

Horn Relay

BCM Data

On/Off

Off

Horn Relay Feedback

BCM Data

On/Off

Off

Park Brake Switch

BCM Data

On/Off

Off

Park (BTSI) Output Feedback

BCM Data

On/Off

On

Traction Switch

BCM Data

On/Off

Off

Year Module Built

ID Information

--

2002