GM Service Manual Online
For 1990-2009 cars only
Table 1: Folding Top Control (FTC) Module
Table 2: Body Control Module (BCM)

Caution: To reduce the risk of personal injury or vehicle damage, the deck lid needs to be fully extended upward and the hydraulic system needs to be disabled. The hydraulic bypass valve needs to be turned counterclockwise to inhibit the system from moving out of sequence.

Caution: To reduce the risk of personal injury or vehicle damage, stay clear of the folding top panels and linkage. The disconnection of a valve harness connector may cause the folding top assembly to drift to a mechanical resting position.

Folding Top Control (FTC) Module

Scan Tool Output Control

Additional Menu Selection(s)

Description

Valve 1

Roof, Special Functions, Folding Top Module

The folding top control (FTC) module commands Valve 1 to energize. As the valve is energized, a click can be heard, activating the valve.

Valve 2

Roof, Special Functions, Folding Top Module

The FTC module commands Valve 2 to energize. As the valve is energized, a click can be heard, activating the valve.

Valve 3

Roof, Special Functions, Folding Top Module

The FTC module commands Valve 3 to energize. As the valve is energized, a click can be heard, activating the valve.

Pump Motor X Direction

Roof, Special Functions, Folding Top Module

The FTC module commands the pump motor to operate in the X direction when you select direction X. The motor should operate in the requested direction.

Pump Motor Y Direction

Roof, Special Functions, Folding Top Module

The FTC module commands the pump motor to operate in the Y direction when you select direction Y. The motor should operate in the requested direction.

Body Control Module (BCM)

Scan Tool Output Control

Additional Menu Selection(s)

Description

Tonneau Relay

Roof, Special Functions, Body Control Module, Miscellaneous Tests

The body control module (BCM) energizes the tonneau release relay when you select On. The release relay should then command the folding top cover latch actuator to release the folding top cover.