Mudbug,
I've got the same truck with more miles (151K) and a somewhat similar problem. My stutter usually occurred at low RPM when the engine was in overdrive, usually between 1300 and 1700 RPM. Stutter, surge, miss, whatever, no engine codes. After checking the usual things, I changed the plug wires. Stutter gone, ran great again . . . for ten minutes, then engine code for MAP/ MAF, stutter back. Changed MAP, stutter gone . . . for three weeks, engine code and stutter back. Changed MAP again and MAF . . . stutter gone for 10 miles, engine code and stutter back again. Guess what I'm trying to say is check the plug wires and make sure they didn't leave one loose and if you've still got the originals (like I did), spend the $50 and change 'em. That seemed to take care of the first part of my problem. Don't mean to hijack your thread, but if anybody reading has got any ideas for me, I'd appreciate it. Thanks.