1pc 599-218 A/C Heater Climate Control Module for Silverado 1500 1999–2002.Compatible with Avalanche 1500 2002, Avalanche 2500 2002, Silverado 1500 1999–2002, Silverado 2500 1999–2002, Silverado 3500 2001–2002, Suburban 1500 2000–2002, Suburban 2500 2000–2002, Tahoe 2000, Sierra 1500 1999–2002, Sierra 2500 1999–2002, Sierra 3500 2001–2002, Yukon 2000, Yukon XL 1500 2000–2002, and Yukon XL 2500 2000–2002.This module is a direct replacement for the climate control unit and restores factory functionality. This replacement part is independently produced.All brand references are for compatibility demonstration only.