GM Service Manual Online
For 1990-2009 cars only

Your vehicle may have a power liftgate. The vehicle must be in PARK (P) to power open or close the liftgate.

The liftgate must be completely closed to power open or completely open to power close.

The taillamps will flash and a chime will sound at the beginning of each power operation cycle.

Caution: You or others could be injured if caught in the path of the power liftgate. Make sure there is no one in the way of the liftgate as it is opening and closing.

Notice: If you open the liftgate without checking for overhead obstructions such as a garage door, you could damage the liftgate or the liftgate glass. Always check to make sure the area above and behind the liftgate is clear before opening it.

To open and close the liftgate, press and hold the power liftgate button on the Remote Keyless Entry  (RKE) transmitter until the liftgate starts moving. Press the RKE button a second time during liftgate operation to reverse that operation. See Remote Keyless Entry (RKE) System Operation for more information.

Power Liftgate Button on Overhead Console


Object Number: 1704632  Size: A2

The liftgate can also be opened and closed by pressing the power liftgate button on the overhead console. Press the button a second time during liftgate operation to reverse that operation.

The liftgate can be power opened by pressing the touchpad switch on the liftgate handle. Press the button a second time during liftgate operation to reverse that operation.

Power Liftgate Button Near Liftgate Latch


Object Number: 1679496  Size: B2

The liftgate can be power closed by pressing the power liftgate button next to the liftgate latch. Press the button a second time during liftgate operation to reverse that operation.

The power liftgate my be temporarily disabled under extreme high or low temperatures. If this occurs, the liftgate can still be operated manually. The power liftgate may not operate under low battery conditions.

If you shift the transmission out of PARK (P) while the power function is in progress, the liftgate power function will continue to completion. If you shift the transmission out of PARK (P) and accelerate before the power liftgate latches closed, the liftgate may reverse to the open position. Cargo could fall out of the vehicle. Always make sure the power liftgate is closed and latched before you drive away.

If you power open the liftgate and the liftgate support struts have lost pressure, the lights will flash and a chime will sound. The liftgate will hold open temporarily, then slowly close. See your dealer for service before using the liftgate.

Obstacle Detection Features

If the liftgate encounters an obstacle during a power open or close cycle, a warning chime will sound and the liftgate will automatically reverse direction to the full closed or open position. After removing the obstruction, the liftgate may be power opened or closed normally. If the liftgate encounters multiple obstacles on the same power cycle, the power function will deactivate, and the liftgate will switch to manual operation. The REAR ACCESS OPEN warning message in the Driver Information Center (DIC) will indicate that the liftgate is open. After removing the obstructions, manually open the liftgate to the full open position or close the liftgate to the fully closed and latched position. The liftgate will now resume normal power operation.

Your vehicle has pinch sensors located on the side edges of the liftgate. If an object is caught between the liftgate and the body and presses against this sensor, the liftgate will reverse direction and open fully. The liftgate will remain open until it is activated again or closed manually.

Manual Operation of Power Liftgate


Object Number: 1683157  Size: A2

To change the liftgate to manual operation, toggle the switch on the overhead console to the "Disable" position indicated by a circle.

With the power liftgate disabled and the door unlocked, the power liftgate can be manually opened and closed.

To open the liftgate, press the touchpad on the handle on the outside of the liftgate, and lift the gate open. To close the liftgate, use the pull cup or pull strap to lower the liftgate and close. The liftgate latch will power cinch to closed position. Always close the liftgate before driving.

If the RKE button or the power close button on the liftgate is pressed while power operation is disabled, the lights will flash three times, but the liftgate will not move.

It is not recommended that you drive with the liftgate open, however, if you must drive with the liftgate open, the power liftgate should be switched to manual liftgate operation -- the overhead console switch set to the "Disable" position.

Both the liftglass and liftgate have an electric latch. If the battery is disconnected or has low voltage, the liftglass and liftgate will not open. The liftglass and liftgate will resume operation when the battery is reconnected and charged.

If the battery is properly connected and has adequate voltage, and the liftgate or liftglass still will not function, your vehicle should be taken to a dealership for service.

Caution: It can be dangerous to drive with the liftglass or liftgate open because carbon monoxide (CO) gas can come into your vehicle. You cannot see or smell CO. It can cause unconsciousness and even death.

If you must drive with the liftglass or liftgate open, or if electrical wiring or other cable connections must pass through the seal between the body and the liftglass or liftgate:

   • Make sure all other windows are shut.
   • Turn the fan on your heating or cooling system to its highest speed with the recirculation mode off. That will force outside air into your vehicle. See Climate Control System or Dual Automatic Climate Control System .
   • If you have air outlets on or under the instrument panel, open them all the way.
   • If your vehicle has a power liftgate, disable the power liftgate function.
See Engine Exhaust .