my chevy truck wont turn when the ignition is engaged, I checked the battery its 2mo old,checked the starter by napa all test were good,fuses all good, checked wiring nothing frailed, used a diagnostic tool, it only showed code c0221 n c0226 which was left n right speed signal. vehicle is in park,full gas tank. just recently installed new barkes, also had found a turnsignal light out and replaced. previous problems a couple years ago was my fuel pump-replaced,had been keeping up with maint. any ideas what could be my problem? thanks Jose