GM GEN III Fuel Injection Harness Throttle By Wire; Standard Length CHEVROLET GMC AVALANCHE 1500 ENVOY ENVOY XL ENVOY XUV SIERRA 1500 SIERRA 1500 HD SIERRA 2500 SIERRA 2500 HD SIERRA 3500 SILVERADO 1500 SILVERADO 1500 HD SILVERADO 2500 SILVERADO 2500 HD SILVERADO 3500 SSR SUBURBAN 1500 SUBURBAN 2500 TAHOE TRAILBLAZER TRAILBLAZER EXT YUKON YUKON XL 1500 YUKON XL 2500 BASE DENALI LS LT LTZ NORTH FACE ON ROAD EDITION SL SLE SLT SS WBH WT Z66 Z71 2003 2004 2005 2006 4.8L GEN III LR4 Vortec (294) 5.3L GEN III Flex L59 Vortec (325) 5.3L GEN III L33 Vortec (325) 5.3L GEN III LM4 Vortec (323) 5.3L GEN III LM4 Vortec (325) 5.3L GEN III LM7 Vortec (323) 5.3L GEN III LM7 Vortec (325) 5.3L GEN IV LH6 Vortec (323) 5.3L GEN IV LH6 Vortec (325) 6L GEN III CNG LQ4 Vortec (364) 6L GEN III LQ4 Vortec (364) 6L GEN III LQ9 HO Vortec (364) 6L GEN IV LS2 (364) CNG FLEX GAS Painless Wiring Painless Wiring GM GEN III Fuel Injection Harness - 60221 60221 Engine Wiring Harness
