Auxiliary external transmission oil cooler

The auxiliary, heavy-duty, external transmission air-to-oil cooler helps keep transmission fluid temperatures within their optimal operating range when additional loads are present, such as when towing or hauling.

On Work Truck models, this feature requires the available Trailering Package, Snow Plow Prep Package or Heavy-Duty Cooling Package. On LS models, it requires the available Trailering Package. On LT models, it requires the available Trailering Package, Snow Plow Prep Package or the Vortec® 6.2L V8 engine.