Peterbilt 579 Washer Fluid Pump 2024. All of the fuses and relays are good. Washer pump wiring is one of the longest circuits and jumps through multiple harness.
Pull test the wires at the connector where it plugs into the washer pump and up to about a foot back or whereever there is a tie wrap. Shop for the best washer pump for your 2017 peterbilt 579, and you can place your order online and pick up for free at your local o’reilly auto parts.