2003 GMC Envoy Owner's Manual - Page 280

4. Shift the transfer case to NEUTRAL (N). See "Four-Wheel Drive" in the Index for the proper procedure to select the NEUTRAL position for your vehicle. 5. Release the parking brake only after the vehicle being towed is firmly attached to the towing vehicle. Dolly Towing Your vehicle was not designed to be dolly towed. If you need to tow your vehicle, see "Dinghy Towing" earlier in this section. 6. Turn the ignition off and remove the key. If the key is not removed, the battery will drain. I Shifting a four-wheel-drive vehicle's transfer case into NEUTRAL can cause your vehicle to roll even if the transmission is in Park (P). You or others could be injured. Make sure the parking brake is firmly set before you shift the transfer case to NEUTRAL. ng a fou -vheel-drive vehicle's transfer case into NEUTRAL can cause your vehicle to roll even if the transmission is in Park (P). You or others could be injured. Make sure the parking brake is firmly set before you shift the transfer case to NEUTRAL. 4-47