GM Service Manual Online
For 1990-2009 cars only

Scan Tool Output Control

Additional Menu Selections

Description

Refer to the scan tool manual for complete scan tool operating instructions.

2WD High Indicator Light

--

This function allows the technician to command the 2WD high indicator light, within the transfer case shift control switch, on or off.

4WD High Indicator Light

--

This function allows the technician to command the 4WD high indicator light, within the transfer case shift control switch, on or off.

4WD Low Indicator Light

--

This function allows the technician to command the 4WD low indicator light, within the transfer case shift control switch, on or off.

ATC Motor A Control

--

This function allows the technician to energize the motor, causing it to shift the transfer case through all five modes. Motor control A moves in the opposite direction as motor control B.

ATC Motor B Control

--

This function allows the technician to energize the motor, causing it to shift the transfer case through all five modes. Motor control B moves in the opposite direction as motor control A.

Auto 4WD Indicator Light

--

This function allows the technician to command the auto 4WD indicator light, within the transfer case shift control switch, on or off.

Engage Front Axle

--

This function allows the technician to engage and disengage the front axle actuator. When the front axle actuator is engaged, the front axle becomes a live axle, causing the front propshaft to turn.

Neutral Indicator Light

--

This function allows the technician to command the neutral indicator light, within the transfer case shift control switch, on or off.

Transfer Case Lock

--

This function allows the technician to turn the transfer case lock on and off. With the transfer case lock on, the transfer case cannot be shifted.