2012 Chevrolet Tahoe Owner's Manual - Page 305

Driving and Operating . 9-27 OnStar System (if equipped) Sunroof (if equipped) WARNING (Continued) If the cord will not reach, use a heavy-duty three-prong extension cord rated for at least 15 amps. 4. Before starting the engine, be sure to unplug and store the cord as it was before to keep it away from moving engine parts. If you do not, it could be damaged. The length of time the heater should remain plugged in depends on several factors. Ask a dealer in the area where you will be parking the vehicle for the best advice on this. . WARNING (Continued) fairly level ground, use the steps that follow. If you have a four-wheel drive transfer case with a N (Neutral) position, and the transfer case is in N (Neutral), the vehicle will be free to roll, even if the shift lever is in P (Park). So, be sure the transfer case is in a drive gear - not in N (Neutral). If you are pulling a trailer, see Driving Characteristics and Towing Tips on page 9‑70. Always set the parking brake. 1. Hold the brake pedal down, then set the parking brake. See Parking Brake on page 9‑46 for more information. 2. Move the shift lever into the P (Park) position by pulling the shift lever toward you and moving it up as far as it will go. 3. Be sure the transfer case is in a drive gear - not in N (Neutral). These features work when the key is in ON/RUN or ACC/ ACCESSORY. Once the key is turned from ON/RUN to LOCK/OFF, the windows and sunroof continue to work up to 10 minutes until any door is opened. The radio continues to work for up to 10 minutes or until the driver door is opened. Shifting Into Park { WARNING It can be dangerous to get out of the vehicle if the shift lever is not fully in P (Park) with the parking brake firmly set. The vehicle can roll. If you have left the engine running, the vehicle can move suddenly. You or others could be injured. To be sure the vehicle will not move, even when you are on (Continued) Retained Accessory Power (RAP) The following vehicle accessories can be used for up to 10 minutes after the engine is turned off: . . Audio System Power Windows