2003 GMC Yukon Owner's Manual - Page 341

The label will help you decide how much cargo and installed equipment your truck can carry. Using heavier suspension components to get added durability might not change your weight ratings. Ask your dealer to help you load your vehicle the right way. If you put things inside your vehicle - like suitcases, tools, packages, or anything else - they go as fast as the vehicle goes. If you have to stop or turn quickly, or if there is a crash, they'll keep going. There's also important loading information for off-road driving in this manual. See ″Loading Your Vehicle for Off-Road Driving″ in the Index. Level Control Automatic Level Control The automatic level control rear suspension is available on C/K 1500 vehicles and comes as a part of the Autoride™ suspension. This type of level control is fully automatic and will provide a better leveled riding position as well as better handling under a variety of passenger and loading conditions. An air compressor connected to the rear shocks will raise or lower the rear of the vehicle to maintain proper vehicle height. The system is activated when the ignition key is turned to RUN and will automatically adjust vehicle height thereafter. The system may exhaust (lower vehicle height) for up to ten minutes after the ignition key has been turned off. You may hear the air compressor operating when the height is being adjusted. If a self-equalizing hitch is being used, it is recommended to allow the shocks to inflate, thereby leveling the vehicle prior to adjusting the hitch. {CAUTION: Things you put inside your vehicle can strike and injure people in a sudden stop or turn, or in a crash. • Put things in the trunk of your vehicle. In a trunk, put them as far forward as you can. Try to spread the weight evenly. • Never stack heavier things, like suitcases, inside the vehicle so that some of them are above the tops of the seats. • Don't leave an unsecured child restraint in your vehicle. • When you carry something inside the vehicle, secure it whenever you can. 4-59