1998 GMC Safari Owner's Manual - Page 219

Making Turrc NOTICE: Making very sharp turns while trailering could cause the trailer to come in contact with the vehicle. Your vehicle could be damaged. Avoid making very sharp turns while trailering. When you're turning witha trailer, make widerturns than normal. Do this so your trailer won't strike shoulders, soft curbs, road signs, trees or other objects. Avoid jerky or sudden maneuvers. Signal wellin advance. When towing a trailer, the arrows on your instrument panel will flash for turns even the bulbson the trailer if are burned out. Thus, may think drivers behind you you are seeing your signal when they are not. It's important to check occasionally be sure the trailer bulbs are to still working. Driving On Grades Reduce speed and shift a lower gearbefore you start to down a long or steep downgrade. you don't shift If down, you might have to use your brakes much that so they would get hot and no longer work well. On a long uphill grade, shift down and reduce your speed to around45 mph (70 km/h) to reduce the possibility of engine and transmission overheating. Turn Signals When Towing a Trailer When you towa trailer, your vehicle has have extra to wiring (included in the optional trailering package). The arrows on your instrument panel will flash whenever you signal a turn or lane change. Properly hooked up, the trailer lamps will also telling other flash, drivers you're about turn, change lanes or stop. to When towing at high altitude on steep uphill grades, consider the following: Engine coolant will boil at a lower temperature than at normal altitudes. you t r If un your engineoff immediately after towing at high altitud on steep uphill grades, your vehicle may show signs similar to engine overheating. avoid this, let the To engine run while parked (preferably on level ground) with the automatic transmission in PARK (P) for a few minutes before turning the engine off. you do get the If overheat warning, see "Engine Overheating" in the Index. 4-35