GM Service Manual Online
For 1990-2009 cars only
Table 1: LGM Output Controls
Table 2: BCM Output Controls

LGM Output Controls

Scan Tool Output Control

Additional Menu Selection(s)

Description

Rear Wiper

--

The rear wiper/washer can be activated via the scan tool.

BCM Output Controls

Scan Tool Output Control

Additional Menu Selection(s)

Description

Headlamp Washer Relay

--

The BCM will actuate the Headlamp Washer relay after you select ON. The headlamp washers should spray the headlamps.