1998 GMC Sonoma Owner's Manual - Page 201

Here is an example of proper truck and camper match: If your slide-in camper and its load weigh less than the CWR, the center of gravity zone for your vehicle may be larger. Your dealer can help you make a good vehicle-camper match. He'll also help you determine your CWR. i A. Camper Center of Gravity 0 z 1 After you've loaded your vehicle and camper, drive to a weigh station and weigh on the front and rear wheels separately. This will tell you the load on your axles. The load on the front and rear axles shouldn't be more than either of the GAWRs. The total of the axle loads should not be more than the GVWR. The GAWR and GVWR are found on the CertificatiodTire label located on the driver's door edge, above the door latch. B. Recommended Center of Gravity Location Zone The camper's center of gravity should fallwithin the center of gravity zone for your vehicle's cargo load. Campers can only be installed in a long box pickup. Check your Truck-Camper Loading Label the passenger's on door near the latch to determine if your vehicle canccwry a slide-in camper. You must weigh any accessories, trailerhitches or other equipment you add to your vehicle. Then, subtract this extra weight from the CWR. This extraweight may shorten the center of gravity zone for your vehicle. Your dealer can help you with this. If you've gone over your weight ratings, move or take out some things until all the weights fall below the ratings. Of course, you should always tie down any loose items when you load your vehicle or camper. When you install and load your slide-in camper, check the manufacturer's instructions. If you want more information on curb weights, cargo weights, cargoweight rating and the correct center of gravity zone for your vehicle, your dealer can help you. Just ask for a copy of "Consumer Information, Truck-Camper Loading."