GM Service Manual Online
For 1990-2009 cars only

Scan Tool Output Controls for GMC Truck Envoy - 2WD 2006

Table 1: Engine Control Module (ECM)
Table 2: Powertrain Control Module (PCM)

Engine Control Module (ECM)

Scan Tool Output Control

Additional Menu Selection(s)

Description

GEN L Terminal

Engine Output Controls

The ECM commands the generator Off when you select Off. The Generator will stop generating an output voltage.

Starter Relay

Engine Output Controls

Commands starter relay On and Off.

Powertrain Control Module (PCM)

Scan Tool Output Control

Additional Menu Selection(s)

Description

GEN L Terminal

Engine Output Controls

The PCM commands the generator Off when you select Off. The Generator will stop generating an output voltage.