Turn Signals When Towing a TrailerThe arrows on your instrument panel will flash wheneveryou signal a turn or lane change. Properly hooked up,the trailer lamps will also flash, telling other driversyou’re about to turn, change lanes or stop.When towing a trailer, the arrows on your instrumentpanel will flash for turns even if the bulbs on the trailerare burned out. Thus, you may think drivers behindyou are seeing your signal when they are not. It’simportant to check occasionally to be sure the trailerbulbs are still working.Driving On GradesReduce speed and shift to a lower gear before you startdown a long or steep downgrade. If you don’t shiftdown, you might have to use your brakes so much thatthey would get hot and no longer work well.You can tow in DRIVE (D). You may want to shift thetransmission to THIRD (3) or, if necessary, a lowergear selection if the transmission shifts too often(e.g., under heavy loads and/or hilly conditions).You may also want to activate the tow/haul mode if thetransmission shifts too often. See “Tow/Haul Mode”earlier.When towing at high altitude on steep uphill grades,consider the following: Engine coolant at higher altitudeswill boil at a lower temperature than at or near sea level.If you turn your engine off immediately after towing athigh altitude on steep uphill grades, your vehicle mayshow signs similar to engine overheating. To avoid this,let the engine run while parked (preferably on levelground) with the automatic transmission in PARK (P)for a few minutes before turning the engine off. If youdo get the overheat warning, see Engine Overheatingon page 5-26.4-52