71 GMC 350 - Finally got my mechanic to fix the brakes and pack a wheel bearing. So with the weather being nice, I decided to go cruzing while completing some errands. Since I'm used to driving a 93 GMC Vanudra, I think I may have pushed it too hard. Speedometer read 80, GPS said 70. When I got off the turnpike, IT started acting funny, cutting off at the traffic lights. Then when I got to my destination, it cuts off. I restart, idles fine, put in drive, and cuts off again, start it again, put in drive cuts off again. I mamange to get it into a parking space, go do my business come back 20 minutes later, and It's running fine. Any thoughts, ideas?
