GM Service Manual Online
For 1990-2009 cars only
Table 1: BCM Scan Tool Data List
Table 2: PCM/ECM Scan Tool Data List

BCM Scan Tool Data List

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON/Engine OFF

8-Digit GM Part Number

Module Information

8-Digit Alphanumeric

varies

A/C Switch

Inputs

Active/Inactive

varies

PCM/ECM Scan Tool Data List

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON/Engine OFF

A/C High Side Pressure

Engine Data 2

kPa/psi

420 kPa (61 psi)

A/C High Side Pressure

Engine Data 2

volts

0.8 volts

A/C Off For WOT

Engine Data 2

Yes/No

No

A/C Pressure Disable

Engine Data 2

Yes/No

No

A/C Relay Circuit Status

Output Driver Data

OK/Fault

OK

A/C Relay Command

Engine Data 1/Engine Data 2

On/Off

Off

A/C Request Signal

Engine Data 2

Yes/No

varies

ECT Sensor

Engine Data 1/Engine Data 2

°C/°F

varies