| My truck did the samething after I lifted mine, when slowing down the brake pedal would be really stiff, then pulse and go to the floor. Found out that the abs was trying to activate all the time. Then used my Diablo to modify parameters for 38.5" tires. So, I reset my parameters to stock for tire size, and have had no problems since. If you lifted your truck, and running a programmer, and you changed the parameters for bigger tires. I would reset them to stock. Maybe contact the manufacturer of the programmer to properly set parameters for bigger tires. |