FFDP

iTrader: (2)

I wouldn't ever run 34 psi in a 3/4 ton truck. Besides the trucks warning lights would be going all crazy on you.

TXsilverado

iTrader: (19)

what's the norm...now that I think about it I've never actually checked the pressure on my 3/4 ton. I just run 34 on my passenger cars and 1/4 trucks.


what warning lights? my 2002 only warns if your fuel is low

FFDP

iTrader: (2)

I think it's still 50-55 front and 70-80 rear for 3/4 and 1 ton trucks. Ford and dodge have their own ratings aswell.

1FastBrick

iTrader: (17)

Tire pressure depends on the tires you are running and hauling a load or unloaded.

The setting for tire type and air pressure can be changed on the new vehicles with a factory scan tool or equivalent.

I have done this in the past on the newer GM's after they get different tire and wheel combo's installed.

DEWFPO

Do you idle the engine much? As in warming it up before driving off? A few folks still do that and it kills fuel mileage. Do you use Auto Start? Same thing. Also, in the winter quite a few folks leave their HVAC controls in Defrost mode and they don't realize the A/C compressor is coming on all the time even when it's cold out.

DEWFPO

01WS6/tamu

iTrader: (36)

Baby it and drive it easy you don't have enough miles on it yet. You may have one of those really tight motors that if driven easily during it's break in will run great once it breaks in and get better mileage give it 3-4K miles Don't listen to anyone who tells you it's pre broke in they are full of ****. Drive it easy don't dog it for first 3-4K miles. If mileage is still that bad you can always take it in. But if check engine lights off most dealers will just tell you it's nature of the beast and deal with it.