2003 GMC Sonoma Owner's Manual - Page 254

Here is an example of proper truck and camper match: I 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. Secure loose items to prevent weight shifts that could affect the balance of your vehicle. When the truck camper is loaded, drive to a scale and weigh on the front and on the rear wheels separately to determine axle loads. Individual axle loads should not exceed either of the Gross Axle Weight Ratings (GAWR). The total of the axle loads should not exceed the Gross Vehicle weight Rating (GVWR). These ratings are given on the vehicle certification label that is located on the rear of the passenger's door. If weight ratings are exceeded, move or remove items to bring all weights below the ratings. If you want more information on curb weights, cargo weights, cargo weight 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." A. Camper Center of Gravity B. Recommended Center of Gravity Location Zone The camper's center of gravity should fall within 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 on the passenger's door to determine if your vehicle can carry a slide-in camper. You must weigh any accessories, trailer hitches or other equipment you add to your vehicle. Then, subtract this extra weight from the CWR. This extra weight may shorten the center of gravity zone for your vehicle. Your dealer can help you with this. 4-53