Hi, New to forum, Having my first issue with 2018 @ 51500 miles, stock ECU, from the republic of California so tunes to delete not an option especially since it’s a company truck. Today in a parking lot driving slow Service Electronic Throttle Control came on, can no longer “punch” throttle but can ease into it. Should I try EGR / MAP cleaning before I take somewhere? I do not have a scanner to clear code and am not looking forward to leaving my truck at a dealership before Christmas and New Years, any other suggestions?