Engine Cooling

Because Towing Places Higher Demands On The Engine Cooling System, The Cooling System Is Enhanced In Vehicles That Have Factory-Installed Trailer Hitches, If Necessary. This Is Done By Installing A Stronger Or A Second Radiator Fan And/Or A Larger Radiator.

The Cooling System Should Also Be Enhanced When A Trailer Hitch Is Retrofitted, If The System Was Not Already Modified At The Factory. Otherwise The Cooling System Could Overheat Under Increased Engine Load, For Example When Driving In Mountains, In High Temperatures Or With High Towing Weight. When Converting The Cooling System, Use The Engine Cooling System Components Designed For Towing Listed In The Parts Information. Refer To The Procedures In The Applicable Repair Information.

Enhancing The Cooling System May Be Avoided If The Engine Is Not Put Under A Heavy Load, For Example:

• The Combined Weight Is Considerably Less Than The Permitted Amount,
• No High Outside Temperatures,
• No Long, Steep Grades,
• No Driving At High Altitude.

The Coolant Temperature Gauge Must Always Be Monitored Closely. If The Needle In The Gauge Moves High Into The Hot Zone, Reduce Speed Immediately. It May Be Necessary To Take A Break To Allow The Engine To Cool. When Doing This, Let The Engine Run At Idle For Approximately 2 Minutes To Prevent Heat Buildup.