One problem related to ignition has been reported for the 1998 GMC Blazer. The most recently reported issues are listed below.
Vehicle kept stalling out. It stalled when consumer stopped at stop signs and traffic lights. She had it towed 3 times, because sometimes when it stopped it did not restart. Once she was going up a hill and had a lot of traffice behind her and the car died, she had to have it towed because it would not restart and no one knew why this kept happening.