Description And Operation: Operation

• The motor, transmission and screw-drive portions of the power liftgate Power Drive Unit (PDU) provide the power and torque required to open or close the liftgate under most conditions.
• The Hall effect sensors provide the Power LiftGate Module (PLGM) with both a speed signal and a direction signal.
• These Hall effect inputs allow the PLGM to monitor and respond appropriately to any irregularities in liftgate travel and or operation.

The long, large diameter coil spring within the PDU is strong enough to assist in opening and, in combination with the gas-charged lift cylinder on the left side of the liftgate, will support the liftgate in any open position. The short, small-diameter spring provides an initial lift off that moves the liftgate latch away from the latch striker after the power liftgate latch is initially released.