Lots of noise on start up?

[Planohummer]

1)sure you're not in 4hi lock?
2)fan clutch?

[ctupton]

I'm not in 4Hi, but I was wondering if it was the fan clutch.

[Texas Red]

I have noticed the abnormal roar too. But like your dealer said it only lasts a couple of hundred yards. Thing is, it doesn't do it on every start up -- only occasionaly.

[wannabeH3]

im lucky if i get 200 with my 35's on 240 with the 33s

[wpage]

Originally Posted by wannabeH3

im lucky if i get 200 with my 35's on 240 with the 33s

You should be doing much better than that! Around 300 with 35's and 350 with33's

Get it checked.

[3Hummer]

your gas mileage is about right one, mine is stock, and i get about 150-170 miles out of the first half of the tank, and overall i get about 280 miles out of each tank, i fill about 19 gallons each time so do the math, but its not hurting your gas mileage. Mine is also a bit louder when i first start it up in the morning, but goes away by the time i get down the street. Take it to the dealer and tell them to look at it, not just assume, if your car is under warranty, you wont pay a dime.

[ctupton]

Cool, well I'll try to make a service appointment soon and get it in... glad my mileage looks right....