truesmack

Any ideas or ways to improve my gas milage on a 2005 silverado I just got, extended cab 4x4, 5.3, with 27000 miles on it. I have been driving it rather conservative and still getting only 13 or 14 mpg? This seems kinda low in my opinion, I'm not looking for dramatic increase or anything, but looking more for 16 maybe 18 mpg? I don't know just wondering if you have any easy suggestions I could use that might save me money, other than driving style, cause I am already trying to do that one. Thanks.

preppycowboy06

i had that same problem on my 02 z71 5.3 i tried everything then i found out that it had 4.11 in it look in your glove box for a code that says gt5 if it had that its 4.11 if its gt4 then its 3.73 and it sould get better i only get 14.5 on a good day

Coppertop71

Running the best tires for fuel ecomony, keeping it light, using correct oil wieght 5W30, and putting a brick under the gas pedal is about the only non-modifications that help. I get about 14.5 city but had a long trip I had recently I must have made 20 mpg since I had 400 plus trip miles on it at the pump on my next fill up.

As far a mods you could start with a cold air intake with a K&N air filter

truesmack

Not really sure what the hell you are talking about, little more help maybe?? Just curious the difference.

truesmack

Any suggestions on easy modifications I can do that won't brake the bank, but tell me any modifications that would help milage, thanks.

lstew

I used a bed cover to get another 1 mpg. It was just a soft roll up, but it saved gas!
Also, you can get "cold air intake" on E-bay for around $50.

truesmack

The code in my glove box is GU6 which is 3.42 gears I believe, so I think I should be getter better, im getting like 13 mpgs, but hard to check the past few weeks, cause using 4x4 in the snow up north.

mitchell87

The biggest factor in gas milage is your right foot. Keep it less then half throttle and i bet you'll see an increase.

truesmack

I have been doing that with the throttle certainly, and haven't seen an increase at all---but its hard to tell cause its winter time and all, hopefully it will improve next spring, or have to come up with some other things to improve it, thanks.

mitchell87

Since it is winter, your vehicle idles a lot more also known as 0 mpg. That brings your average down a lot. Hopefully when the weather get nicer your mpg will go up as well.