TRAILER TOW GROUP IV -inc: Rear Load Leveling Suspension Trailer Brake Control Full Size Spare Tire 180 Amp Alternator 7 & 4 Pin Wiring Harness Heavy Duty Engine Cooling Class IV Receiver Hitch Steel Spare Wheel ENGINE: 3.6L V6 24V VVT UPG I W/ESS (STD) TRANSMISSION:... via Americanlisted