It don't happen all the time. No codes or malfunction light.
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1998 Chevrolet 3500 Pickup Question: Why dose my 98 k3500 seem to miss when I get up to cruising speed 50-60 mph?
Answer #1torque wrench from Stewart's Auto Repair LLC, February 10, 2013, 11:47Master
Gas or Diesel engine sounds like you might have a injector acting up. Maybe just dirty try a good injector cleaner and a tank of premium fuel first. Also get it scanned for codes there may be one that is pending and hasn't set yet.