Tow/Haul is designed to be most effective when thevehicle and trailer combined weight is at least 75 percentof the vehicle’s Gross Combined Weight Rating(GCWR). See “Weight of the Trailer” earlier in thesection. Tow/Haul is most useful under the followingdriving conditions:• When pulling a heavy trailer or a large or heavyload through rolling terrain.• When pulling a heavy trailer or a large or heavyload in stop and go traffic.• When pulling a heavy trailer or a large or heavyload in busy parking lots where improved lowspeed control of the vehicle is desired.Operating the vehicle in Tow/Haul when lightly loadedor with no trailer at all will not cause damage. However,there is no benefit to the selection of Tow/Haul whenthe vehicle is unloaded. Such a selection when unloadedmay result in unpleasant engine and transmissiondriving characteristics and reduced fuel economy.Tow/Haul is recommended only when pulling a heavytrailer or a large or heavy load.The vehicle is equipped with Autoride® which furtherimproves the vehicle’s ride while towing. See Autoride®on page 5-39 for more information.Trailer BrakesA loaded trailer that weighs more than 2,000 lbs(900 kg) needs to have its own brake system that isadequate for the weight of the trailer. Be sure to readand follow the instructions for the trailer brakes sothey are installed, adjusted and maintained properly.Since the vehicle is equipped with StabiliTrak® ,the trailer brakes cannot tap into the vehicle’s hydraulicsystem.5-47
