Hey guys. My father-in-law asked me to see if I can get an answer on here. He has an 01 Lightning. He says the alternator will randomly quit. Then after driving for awhile, itll kick back on and start working again. Then today, after the alternator quit then started working again, the cruise control stopped. He thinks it may be something in the computer but he is not sure.

Whatdya guys think?

 

Start with checking the voltage regulator