HOP Windshield Washer Pump 22999423 84518407 Buick Chevrolet Cadillac GMC

HOP brand front windshield washer pump, compatible with OEM numbers GMC 22999423 and 84518407, fits Buick LaCrosse, Chevrolet Silverado 1500/2500/3500, and some GMC models. Pump is mounted in the washer reservoir or nearby; pressurizes washer fluid to spray nozzles, ensuring glass cleaning during wiper operation. Installation difficulty medium; estimated labor 30-45 minutes. If spray is weak, not spraying at all, or pump makes noise without fluid flow, pump motor or seals may be damaged; replace.