2005 GMC Envoy Owner's Manual - Page 87

Liftgate/Liftglass Liftgate Release To unlock the liftgate, you may use the power door locks or the keyless entry system described earlier. On some vehicles the liftglass will also unlock when the liftgate is unlocked. Press the pushbutton on the liftglass to open it. To open the entire liftgate, lift the handle located in the center of the liftgate. If you open the liftgate, the liftgate module will lock the liftglass after a one to two second delay. {CAUTION: It can be dangerous to drive with the liftgate or liftglass 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 liftgate open or if electrical wiring or other cable connections must pass through the seal between the body and the liftgate or liftglass: • Make sure all other windows are shut. • Turn the fan on your heating or cooling system to its highest speed and select the control setting that will force outside air into your vehicle. See "Climate Control System" in the Index. • If you have air outlets on or under the instrument panel, open them all the way. See Engine Exhaust on page 2-35. Emergency Release for Opening Liftgate 1. Remove the trim plug, located on the inside of the liftgate in the center, to expose the access hole in the trim panel. 2. Use a tool to reach through the access hole in the trim panel. 3. Pry the left release lever up to the unlock position. Pry the right release lever up to unlatch the liftgate. 4. Reinstall the trim plug. 2-13