What kind of gas mileage are yall getting and what do you have done to your trucks? Im looking to baddle gas prices alittle and the truck is stock so i know theres room for improvement.

 

I get 16.1 according to my electronic fuel mileage indicator on my guages. Im in a 06 crewcab with the 5.3L. I have intake and exhaust but fuel mileage stayed pretty much the exact same.

 

I average 18.5 to 19 with 21 being my best. It's a 04 5.3 w/3.42s, muffler, air intake and tune

 

Best I've seen in my 00 was 17.5 mpg with a Predator 1.03 tune, but my average was like 16 mpg untill I put in a 180* stat then it droped to 14-15mpg. Put the stock 187* stat in and got the Predator updated to 2.12 along with a MAFT to zero my LIFT's and reduce KR. Still tuning...

 

17-19 around town and best to date is 23 on the hwy. with full bolt-ons and a cam.

 

On my 1999 5.3, with 3.73 gears, Airaid CAI, JBA ceramic coated shorty headers, and Gibson single cat-back exhaust, I gained 2 mpg. Mixed city-highway 17.5, open freeway 21+ (Not to mention more power).

A custom tune will also help, my PCM4less tune gained 1 mpg by itself.

 

Only short trips like 10 minutes back and fourth around town on my 4 x 4 5.3 3.73 I get about 13 on the low side. The newer 5.3's seem to get better milage.

As for highway I seldom see it enough to get an idea how a tank or only highway would be.

Intake/exhaust and tune here.

 

about 18 combined 21 best hwy

 

I get around 18 mostly highway driving easy but about 16.5-17 giving it hell, completly stock ECSB z71 with 3.73s.

 

****, the way I've been driving lately it’s been around 13.5 mpg.
If I cant make it to the drags one week I end up taking it out on street.