i have 1 pickup and a van. i do all the work on them. with the right tools you can do the job yourself. almost all cars now have computers. and with the right code reader. you can fix just about any car out there. the trick is to master the code reader.
there is signs that your alternator is not charging your battery enough. take it to be check at auto zone. are whatever auto parts. and they will check for free. also did you check the belts.