GMC / CHEVROLET / CADILLAC 99-10 MOTEURS 4.3L / 4.8L / 5.3L / 5.7L / 6.0L / 6.2L / 7.4L / 8.1L Cortex is the programmer your mother warned
1500HD / 2500HD / 2500 Pickup 4wd - 2wd 6 inch Crossmember/Knuckle Lift Kit with ES9000 Shocks