2011 Chevrolet Suburban 2500 Owner's Manual - Page 47

Keys, Doors and Windows 2-9 Doors Liftgate (Power) Power Liftgate Operation . WARNING (Continued) Adjust the Climate Control system to a setting that brings in only outside air and set the fan speed to the highest setting. See Climate Control System in the Index. If the vehicle is equipped with a power liftgate, disable the power liftgate function. { WARNING Exhaust gases can enter the vehicle if it is driven with the liftgate, trunk/hatch open, or with any objects that pass through the seal between the body and the trunk/hatch or liftgate. Engine exhaust contains Carbon Monoxide (CO) which cannot be seen or smelled. It can cause unconsciousness and even death. If the vehicle must be driven with the liftgate, or trunk/hatch open: ... Open the rear doors to access the security locks on the inside edge of each door. To set the locks, insert a key into the slot and turn it to the horizontal position. The door can only be opened from the outside with the door unlocked. To return the door to normal operation, turn the slot to the vertical position. For more information about carbon monoxide, see Engine Exhaust on page 9‑37. On vehicles with a power liftgate the button is on the overhead console. The vehicle must be in P (Park) to use the power liftgate feature. Close all of the windows. Fully open the air outlets on or under the instrument panel. (Continued) 8 : Press the top of the button to open or close the power liftgate. OFF: Press the bottom of the button for manual operation of the power liftgate.