Brake Control Wiring Harness Brake Control Wiring Harness; 2 Plug CADILLAC CHEVROLET GMC HUMMER AVALANCHE 1500 AVALANCHE 2500 ESCALADE ESCALADE ESV ESCALADE EXT H2 SIERRA 1500 SIERRA 1500 CLASSIC SIERRA 1500 HD SIERRA 1500 HD CLASSIC SIERRA 2500 SIERRA 2500 HD SIERRA 2500 HD CLASSIC SIERRA 3500 SIERRA 3500 CLASSIC SILVERADO 1500 SILVERADO 1500 CLASSIC SILVERADO 1500 HD SILVERADO 1500 HD CLASSIC SILVERADO 2500 SILVERADO 2500 HD SILVERADO 2500 HD CLASSIC SILVERADO 3500 SILVERADO 3500 CLASSIC SUBURBAN 1500 SUBURBAN 2500 TAHOE YUKON YUKON XL 1500 YUKON XL 2500 BASE CLASSIC DENALI CLASSIC HYBRID CLASSIC LS CLASSIC LT CLASSIC SL CLASSIC SLE CLASSIC SLT CLASSIC SS CLASSIC WT DENALI HYBRID LS LT LTZ NORTH FACE ON ROAD EDITION SL SLE SLT SS WBH WT Z66 Z71 2003 2004 2005 2006 2007 4.3L (262) Vortec 4.3L LU3 (262) Vortec 4.8L GEN III LR4 Vortec (294) 5.3L GEN III Electric/Gas LM7 (325) 5.3L GEN III Flex L59 Vortec (325) 5.3L GEN III L33 Vortec (325) 5.3L GEN III LM7 Vortec (325) 6.6L Duramax Turbo Diesel LB7 (403) 6.6L Duramax Turbo Diesel LBZ (403) 6.6L Duramax Turbo Diesel LLY (403) 6L GEN III CNG LQ4 Vortec (364) 6L GEN III LQ4 Vortec (364) 6L GEN III LQ9 HO Vortec (364) 8.1L L18 Vortec (496) CNG DIESEL ELECTRIC/GAS FLEX GAS Tekonsha Tekonsha Brake Control Wiring Harness - 3015-P 3015-P Trailer Brake Control Wire Harness