EIB3882520 / 3882.520 - Application Notes 2002-2006 Avalanche, Z66, V8, 2WD/4WD 2002-2006 Escalade, 2WD/4WD, V8, Incl EXT 2000-2006 Yukon (Inc Denali), V8, 2WD/4WD, Exc. QuadraSteer 2000-2006 Yukon XL (Inc Denali), V8, 2WD/4WD 2000-2006 Suburban 1500, V8, 2WD/4WD 2000-2006 Tahoe, V8, 2WD/4WD 2000-2006 Yukon Denali, V8, AWD, Incl. XL (Front Adj. - Rear 1.8 in) NOTE: Rear springs only, front torsion bar is adjustable. Premium Ride Suspension Rear shock must be replaced with standard shock.<