LsxCody

iTrader: (3)

for about the last couple months the truck has been making a roaring type noise(cant really describe it that well). sounds like its coming from the rear end or maybe even the transfer case. i just got the new trans put in but it was doing this before then. only does this when i start up an incline and i slowly get into the gas. when it starts to make the fuss it will continue until i let off the gas then it stops. any ideas?

HIPSI

iTrader: (2)

I've had this same kind of noise and at 49k it was a front hub.Do u have the autotrac?

LsxCody

iTrader: (3)

ive got the auto 4wd button if thats what u mean, but i dont even have the front driveshaft in the truck right now. sounds like its coming toward the rear of the truck.

HIPSI

iTrader: (2)

I thought my transfer case was bout to fall out but took it in under ext warrenty and they said I had a half inch play in the drivers front hub,no more noise now and it sounded bad!

LsxCody

iTrader: (3)

yeah this noise is pretty loud. kinda sounds like something rattling really hard. if im going up a small hill and i ease into the gas pedal some it will start and it wont stop until i let off the gas. sounds like its coming from maybe the transfer case or maybe even the rear end but idk.

1slow01Z71

iTrader: (36)

Easy way to rule out the front hubs, jack the truck up by lifting it on the front crossmember and grab the top and bottom of the tire. Try and rock the tire back and forth, if it has any play the wheel bearing is bad. A bad wheel bearing will make the same noise youre describing.

LsxCody

iTrader: (3)

but it sounds like its coming toward the rear of the truck but i cant pinpoint where its coming from when im driving in the cab. but i will check for bad wheel bearings

1slow01Z71

iTrader: (36)

Ive changed a bunch of them on these trucks and the noise is almost like a resonance under the truck, best I can figure is since its up under the wheelwell the sound reverberates under tha cab and magnifies it.

If its not wheel bearings then it only leaves teh tcase and rear. Both of those are easy to check too.

For the tcase, just drain it and see if you get shavings you may have the dreaded pump rub and the chain is rubbing the case on an incline then once its leveled out it isnt rubbing as bad.

The rear you just need to pull the diff cover, put a dial indicator on it and check backlash and see if its out of spec. Only other thing it could be is wheelbearings in the rear which are pretty easy to check also but a bit labor intensive if theyre not badly worn.

LsxCody

iTrader: (3)

thanks for the help

LsxCody

iTrader: (3)

if it is the t-case wouldnt it have been doing it for awhile, this just started a couple months ago,im gonna check the wheel bearings tomorrow