1999-2002 Silverado; 2000-2002 Suburban/Tahoe; 2002 Avalanche; 1999-2002 Denali; 2000-2002 Denali XL; 1999-2002 Sierra; 2000-2002 Yukon/Yukon XL; 2000-2002 Escalade; 2002 EXT With OEM specific under-dash connector and brake control mating connector Flat connector