Fit for: Use these adapters to connect the LQ4, LQ9 4.8 5.3 6.0 (Truck Engines) fuel injectors to an EV1-style LS1, LS6 & LT1-based engine harness. LQ4 Chevrolet Express/GMC Savana Chevrolet Silverado 2500 Pickup, 3500 Pickup, Crew Cab, and Chassis Cab/GMC Sierra 2500 HD Pickup and Crew Cab, C3, Denali, and 3500 Pickup and Chassis Cab, 1500HD Crew Cab Chevrolet Suburban/GMC Yukon XL Denali Hummer H2 SUT GMC Yukon Denali LQ9 2002–2006 Cadillac Escalade 2003–2007 Chevrolet Silverado SS 2004–2005 Chevrolet Silverado and GMC Sierra Vortec HO Edition Only 2005-2006 GMC Sierra Denali Pickup and Yukon Denali .
