I have a 6.0, with a Manual transmission. its a 2004 extended cab shortbed. anyway this seems to have started a couple days ago. but when you let out the clutch in first gear and give it a little load, (meaning a little bit of gas instead of letting the clutch out with no gas) the truck seems to feel like it slips then clunks and goes. there is not sound!, but the clunk feeling will shake the truck pretty good, actually really good. to describe it more it feels like if you were taking off sort of fast from a stop light and 10 feet goes by and your rear tires hit the white line and skip for a second then cetch and jerk you. the feeling seems to happen after the truck moves a few feet also.

now i do have limited slip incase anyone wants to blame it on that. figured i'd let you guys know. the U joints seem really tight. This is not a double drive shaft like the long trucks. it only has two U joints and now slip in the middle. Also the feeling is SILENT, but pretty hard. The clutch does not seem to sleep at all. and i've had three other people drive it to see if i'm crazy and they all said i'm not, its pretty bad feeling actually. someone said maybe a tooth missing off the pinion. i'm not sure about that because i figured it would make a noise.

Any help would be great. i want to point the dealer in the right direction beacuse i'm towing my rock crawler down to P.A. on the 21st. Thank you.

 

That's exactly what it sounds like. If the clutch was glazed it would make the whole truck buck. Take it to the dealer and ride along with the guy that will be working on it and let him drive it.

 

are you talking about the clutch, clutch or the limited slip clutches?

 

I would go with either the ring or pinion have a chipped off tooth or missing tooth, or the clutch being glazed due to excessive heat. Have you ever slipped the clutch really bad or smoked it like in a sled pull or anything?

 

no not really but, the truck has a lack of power in first gear, you actually have to slip the clutch pretty good to get it to go, unless you always start out in low gear.

 

I think I have the same thing happening. I'm thinking it is the fuel sloshing in the tank. I have a long bed and a larger tank, but your 29 gals, at 7+ lbs/gal, would be a little more than 200 lbs. moving around. Does it happen when your are full or near empty? Just a thought...

Jim

 

Its not the fuel sloshing in the tank.

 

you know thats what i thought at fifst too, cause i had a little less tahn a quarter tank. but then i stated thinking about it again and if it really was the fuel i think i't would break the tank off its brakets in no time with how hard it would have to hit. i'm bringing it to the dealer right now anyway, so i'll let you knwo what htey say.

 

Sounds good