Can a faulty or intermittent ignition control module cause the voltage and lights to surge and the engine to surge prior to it going out completely?
Absolutely. Any intermittent electrical issue can cause any of the above mentioned issues. I would also take a look at the tensioner belt especially at the alternator to ensure its tightened properly. Best of Luck.
Search Chevrolet C/K 1500 Questions
Are you a UK consumer? CarGurus now has a discussion forum in the UK.
Chevrolet C/K 1500 Experts