Got a new GMC 2500HD CC LLY/Alli

[DuckhunterInTN]

I just picked up a new 2004 LLY/Alli GMC crew cab swb 4wd.

I got it from a GMC dealer in a small town in Arkansas northeast (Glen Sain GMC Truck). Very nice people to deal with. Drove it about 150 miles back to Tennessee.

My trip computer said that I averaged 20.2 MPG! I was suprised it was that high. I took it easy driving but was still suprised it was that high.

I still haven't filled it up yet to double check the mileage but is the fuel meter typically accurate (at least while stock)? I hope so... :cool:

Anyways, I've been reading this board forever and finally got one.... :D

[Roadmaster39]

I love my 2004 LLY D/A also, but I would suggest you hand calculate your mileage. The best I've done so far is about 16.

[dodgerfan]

I've had mine since April, got just over 9000 miles on it so far. Calculating MPG vs. the on-board computer - the computer is close but consistently about 0.1 to 0.2 MPG less than I get if I do it by hand.

Getting typically 17-18 MPG in my pretty even mix of city and highway driving.

Enjoy your new truck!

[alberta]

dodgerfan your comments on the bouncy ride we get on ca. interstate hwy. struck home.I have a 04D/A 4x cc lb.Should I do the Bilsteins or go to another solution? I tow a 11000lb.boat but really concerned most with the ride solo. kevin

[mdadgar]

Get the Bilsteins. Huge improvement on the CA concrete freeways.

- Mark

[PONCH]

CONGRATULATIONS!
This is one hell of a truck. and you are going to love it.
I have 30000 on mine now and average 18.8 on a daly basis, however towing it's normally around 10-12. I took it on a 6000 mile trip last winter pulling my 9000lb. camper and averaged 10.5mpg and that was with the on board computer as wll as figuring it by hand.
I put michlen tires on straight out of the lot and the ride is much better.
Have fun, enjoy and try to keep your foot off of the floorboard! lol

[DuckhunterInTN]

Thanks guys. I have about 900 miles on it so far and it has been great. With my first fill-up I checked my mileage and the computer said I was averagin 19.2 mpg. I calculated it by hand and came up with 19.5 so I guess the computer is pretty close.

It is hard keeping my foot out of the floor!