What the heck is this?
 

So i just bought my new 2006 3500 DRW with 100,000 on it with automatic trans. and been running great and pulling good except for today. I hooked up to my 45' gooseneck trailer and loaded my 17,000lb telehandler on it with two pallets of shingles on it. My old 2005 3/4 ton SRW pulled this just fine. But when i went to take off on a slight incline it would not go anywhere. I had to lock it into 4-low just to get up the incline. got on a flat surface and put it back into 2wd and took off then a nasty vibration like a shutter started all the way through first gear then went away but it was like it could not do it. It felt like the tranny was slipping really bad. So could this be a bad torque converter or is the tranny toast? I checked the tranny fluid and it looked fine but smelt really burnt. My dads 3/4 06 SRW pulls it just fine too so i know it is not to much for the truck. So is my tranny bad? I have a 2 yr bumper to bumper warrenty with the truck so not to worried about it but i might just go aftermarket if it is. Any suggestions or help would be greatly appreciated thanks in advance.
I also posted this in the 5.9l section to

Sounds like the t-case. Drain it and see if the fluid is contaminated with metal shavings.

Updates??

Im saying the trans is about ready to go!

Sounds like a slipping tranny to me, check the transmission fluid and if it smells burnt or looks burnt you might get a lil pissed.:argh:

Yeah sorry it took so long but it is going in tomorrow for new trans and my warrenty is going to cover an upgraded on too. It was one of the front clutches slipping and torque convertor. I'm getting a billet input shaft and triple disk convertor put in too since I will pull heavy and also thinking of getting a shift enhancer put in too. They said it would be done by wed at the latest

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They also said they were going to check the t-case but i got the dealership to throw in a bumper to bumper 2 yr unlimited miles warrenty with it and since it happened this quick they are going to even cover the deductible. I will keep you guys updated on it too.

Sounds like this is solved....Im going to cloe it - you can reopen it if you want or need to.