sorry if this has been covered recently but i been out of the loop for awhile.
few weeks ago i had was trying to keep up w/traffic in austin and hit 80 mph and felt a vibration in drive train so backed off. now, when i shift into 6th i get a "flutter" thru the gear shift knob if i just as much as rest my hand on it towards the rear of the truck. shifting anywhere under 50 mph into 6th makes the truck feel/sound like i am lugging it. i took it in and they thought it was the u-joints again ( i had em replaced at 30,0000 miles). they said the whole drive train looked fine, transmission full, etc etc said maybe the cluth is going out, but to drive till it gets a lot worse so they can diagnose it easier. i don't wanna get stranded somewhere! any ideas? the truck has 93,0000 on it. THANKS
few weeks ago i had was trying to keep up w/traffic in austin and hit 80 mph and felt a vibration in drive train so backed off. now, when i shift into 6th i get a "flutter" thru the gear shift knob if i just as much as rest my hand on it towards the rear of the truck. shifting anywhere under 50 mph into 6th makes the truck feel/sound like i am lugging it. i took it in and they thought it was the u-joints again ( i had em replaced at 30,0000 miles). they said the whole drive train looked fine, transmission full, etc etc said maybe the cluth is going out, but to drive till it gets a lot worse so they can diagnose it easier. i don't wanna get stranded somewhere! any ideas? the truck has 93,0000 on it. THANKS