Location and description of fuses and relay Chevrolet Silverado and GMC Sierra: 1500, 2500HD, 3500HD with engine 4.3L V6 LU3 or LG3, 4.8L V8 Vortec 4800, 5.3L V8 Vortec 5300, 6.0L V8 Vortec 6000, 6.2L V8 Vortec 6200, 6.6L V8 Duramax Turbo-Diesel (Regular, Extended & Crew; 2007, 2008, 2009, 2010, 2011, 2012, 2013)