1997 GMC Sonoma Owner's Manual - Page 187

Trailer Recommendations You must subtract your hitch loads from the CWR for your vehicle. Weigh your vehicle with your trailer attached, so that you won't go over the GVWR or the GAWR. You'll get the best performance if you spread outthe weight of your load the right way, and if you choose the correct hitch and trailer brakes. Towing a Trailer For more information, see "Towing a Trailer" later in this section. Pickup Conversion to Chassis Cab General Motors is aware that some vehicle owners may consider having the pickup box removed and a commercial or recreational body installed. However, we recommend that conversions of this type not be done to pickups. Owners should be aware that, as manufactured, there are differences between a chassis caband a pickup with the box removed which may affect vehicle safety. For specific information on this pickup, contact GM the Zone Office for your area. (See the "Warranty and Owner Assistance" booklet for Zone Office.) If you don't use the correct equipment and drive properly, you can lose control when you pull a trailer. For example,if the trailer is too heavy, the brakes may not work well or even at all. You and your passengers could be seriously injured. Pull a trailer onlyif you have followed all the steps in this section. Ask your GM dealer for a advice and information about towingtrailer with yourvehicle. -- NOTICE: Pulling a trailer improperly can damage your vehicle and result in costly repairs not covered by your warranty. To pull a trailer correctly, follow the advice in this part, and your GM dealer see for important information about towingtrailer a with yourvehicle. 4-49