GM Service Manual Online
For 1990-2009 cars only

Midgate Components

The midgate consists of the following components:

    • Midgate window switch
    • Midgate latch release switch
    • Midgate window regulator
    • Left midgate latch
    • Right midgate latch
    • Midgate latch relay
    • Midgate 25-amp window regulator circuit breaker
    • Midgate 15-amp latch relay circuit breaker

Midgate Latch Control

The midgate latches are controlled by the following:

    • Midgate latch release switch
    • Midgate glass full down switch
    • Midgate latch relay
    • Midgate 15-amp latch relay circuit breaker

Midgate Window Control

The midgate window is controlled by the following:

    • Midgate window switch
    • Midgate 25-amp window regulator circuit breaker

Midgate Latch Operation

When the midgate latch release switch is activated, ground is supplied to the coil of the midgate latch relay through the glass full down switch and midgate latch release switch, energizing the relay. When the midgate latch relay is energized, battery voltage is supplied to the midgate latches, opening the midgate.

Midgate Window Operation

When the midgate window switch is activated to Up, battery voltage is supplied to the coil of the midgate window up relay in the window motor, energizing the relay. When the window up relay is energized, the window is driven in the Up direction.

When the midgate window switch is activated to Down, battery voltage is supplied to the coil of the midgate window down relay in the window motor, energizing the relay. When the window down relay is energized, the window is driven in the Down direction.