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

BCM Scan Tool Output Controls

Scan Tool Output Control

Additional Menu Selection(s)

Description

After Blow Relay

Output Controls-Miscellaneous test

The scan tool displays ON or OFF selections. This command allows you to turn the after blow relay On or Off. When the A/C relay is commanded On, the A/C compressor clutch should be engaged.

ECM/PCM Scan Tool Output Controls

Scan Tool Output Control

Additional Menu Selection(s)

Description

A/C Relay

Engine Output Controls

The scan tool displays ON or OFF selections. This command allows you to turn the A/C relay On or Off. When the A/C relay is commanded On, the A/C compressor clutch should be engaged.