1993 GMC Suburban Owner's Manual - Page 226

* Threeimportantconsiderationshave Weight of the Trailer How heavy can a trailer safely Q to do withweight: be? than 7,000 pounds 10,000 Forutilityvehicles,atrailershouldneverweighmore (3175.2 kg). pounds (6125.6 kg). * Forwagonmodels,atrailershouldneverweighmorethan But eventhat can be too heavy. It dependsonhow you plan to useyourrig. Forexample,speed,altitude,roadgrades,outsidetemperature, and how muchyourvehicle is used to pullatrailer all areimportant.And, it can also dependonanyspecialequipmentthatyouhaveonyourvehicle. You can ask your dealer for our trailering information or advice, or you can writeusat theaddresslisted in yourWarranty and OwnerAssistanceInformation Booklet. In Canada,writeto: GeneralMotors of CanadaLimited CustomerAssistanceCenter 1908 ColonelSamDrive Oshawa,Ontario LIH 8P7 Weight of the Trailer Tongue Thetongue load (A) of anytrailer is an importantweight to measurebecause it affectsthetotal,grossweight of yourvehicle.Thegrossvehicleweight (GVW) includesthecurbweight of thevehicle,anycargoyoumaycarry in it, and thepeoplewhowillberiding in thevehicle.And if youwilltowatrailer, youmustaddthetongue load tothe GVW becauseyourvehiclewillbe carryingthatweight, too. See"Loading YourVehicle" in theIndexformore informationaboutyourvehicle'smaximum load capacity.