Chevrolet's Silverado automatic transmissions are equipped with a Tow/Haul mode for use when towing, which includes no user-serviceable components or wiring. The 2002 Silverado was part of a run of model years which featured a factory-fitted seven-pin trailer hitch mounted on the rear of the vehicle adjacent to the tow package. Because the truck was wired by the manufacturer, a set of fuses were factory installed to protect the circuits. The dedicated fuse board is located in the engine compartment, to the driver's side of the motor. Familiarizing yourself with the trailer wiring in the 2002 Silverado is a simple process.
Things You'll Need
- Vehicle owner's manual
Open the truck's hood. Locate the dedicated fuse panel to the driver's side of the engine, above the wheel well. Open the fuse panel cover by depressing the molded plastic tongue at the bottom so that it is no longer located in its jaw, and lift the fuse panel cover toward you and upward.
Reference the owner's manual to identify the fuses. Typically they are arranged left-to-right in the following order: back-up lights, left turn/brake light, right turn/brake light, trailer brake controller and hazard warning flashers.
Check for a second fuse panel in the drivers footwell if the turn/brake fuses are absent. The 2003 model year Silverado has its fuses in this location, and some late 2002 models were fitted with the altered equipment.
Locate a separate fuse inside the main fuse panel adjacent to the battery in the engine bay, labeled "Trailer Park." This fuse is a heavier rating and controls the sidelights circuit, so that if a large trailer with many running lights is towed the standard fuse is not overtaxed.
Tips & Warnings
- Look in the glove box if you do not have a brake controller preinstalled. Chevrolet equipped several model years, including the 2002, with a brake controller harness which was in the glove box when the truck left the factory.
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