Increase My Fuel Economy

[04silverado1500]

Sounds good to me. what type of driving did you do to obtain 16.5?

[2001gmcsierra]

Sounds good to me. what type of driving did you do to obtain 16.5?

 

 

65% highway, 35% city

[2001gmcsierra]

I'm happy with it now though, it's not as bad as before

[04silverado1500]

I'm happy with it now though, it's not as bad as before

 

 

The glass is ALWAYS half full. No exceptions...good way to look at it. Check your plugs and wires + Air filter.

 

Are your tires inflated properly? What brand are they and how much tread life is left?

Edited October 29, 2009 by 04silverado1500

[2001gmcsierra]

I'm happy with it now though, it's not as bad as before

 

 

The glass is ALWAYS half full. No exceptions...good way to look at it. Check your plugs and wires + Air filter.

 

Are your tires inflated properly? What brand are they and how much tread life is left?

 

 

 

Will check on air filter and plugs this weekend

 

What do I inflate 265/75/16 tires to?

 

They are Pirelli tires with about 12-13/32 remaining so they are relatively new

[salden77]

i have an 06 sierra with the 4.8 liter v8, 3.42, automatic, 4wd, regular cab, long bed, loaded, 265-70-17" all terrain tires, always hauling bout 200-300lbs between the tools in my truck box, 6ft ladder and wire, and i have never got less than 16 mpg, on average i get about 18-19 mpg and i do all kinds of driving for work, and of course the occasional wheeling in the mud with friends truck was bone stock, just added air raid cold air intake system this week, and i rarely ever run premium gas in my truck. truck has over 80,000 now. but i think the 06 4.8 liter v8 is a little diff. from the 2000 4.8 liter.

[2001gmcsierra]

i'm thinking about buying a tuner for my truck to increase the mpg's a bit...currently looking at the flashpaq 2815 by superchips, anyone try these

[pistonslap]

What kind of fuel mileage do you get with your 4.8? I'm getting only 5 km/L which is about 12.5 miles per gallon

 

The truck has just under 200,000 km's (so about 125,000 miles) and it is all stock with the exception of 265/75/16 tires

 

Anything I should check that could be causing my truck to waste more gas?

 

Also, truck has an auto transmission

 

The factory build sheet says I should be getting 18 mpg city and 24 mpg highway but I'm getting half of that

You said above that your getting "5 km/L " that works out to 22.5 mpg's NOT 12.5! (5 X 4.5 =22.5)

[herbison243]

I have a 2005 Sierra Denali with a 6liter it has the hard fiber glass box cover and I was getting 20 usMPG is there anything I can do to being these numbers up some the truck is stock with the exception of a magniflow exhaust on it

 

 

 

 

 

 

 

What kind of fuel mileage do you get with your 4.8? I'm getting only 5 km/L which is about 12.5 miles per gallon

 

The truck has just under 200,000 km's (so about 125,000 miles) and it is all stock with the exception of 265/75/16 tires

 

Anything I should check that could be causing my truck to waste more gas?

 

Also, truck has an auto transmission

 

The factory build sheet says I should be getting 18 mpg city and 24 mpg highway but I'm getting half of that

You said above that your getting "5 km/L " that works out to 22.5 mpg's NOT 12.5! (5 X 4.5 =22.5)

 

 

Edited April 3, 2011 by herbison243

[kdixer]

What kind of fuel mileage do you get with your 4.8? I'm getting only 5 km/L which is about 12.5 miles per gallon

 

The truck has just under 200,000 km's (so about 125,000 miles) and it is all stock with the exception of 265/75/16 tires

 

Anything I should check that could be causing my truck to waste more gas?

 

Also, truck has an auto transmission

 

The factory build sheet says I should be getting 18 mpg city and 24 mpg highway but I'm getting half of that

You said above that your getting "5 km/L " that works out to 22.5 mpg's NOT 12.5! (5 X 4.5 =22.5)

 

 

 

 

5km = 3.1068 miles

1L = .26417 gal

 

Therefore 5km/1L = 3.1068 miles/.26417 gal

 

11.749 miles / 1 gal

[txab]

2001gmcsierra

 

Did you ever correct your odometer and recheck your MPG etc...

Edited April 4, 2011 by txab

[herbison243]

2001gmcsierra

 

Did you ever correct your odometer and recheck your MPG etc...

[/quot

 

I have a 2005 Denali with 411 gears and a 6 liter awd. I'm running stock tires and have 210000 km on it. The truck has and aftermarket exhaust on it but thats the only change I know of. I'm only getting 20-21 mpg on th hwy and like 14 mpg in the city based on 3.78liters= 1 gal. how can I get more and is there a baffeling system to make back pressure in my exhaust for low end torque and then have it open for free flow at hwy speed?

 

 

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[joshw1303]

Those 4.8 don't get good mpg. I think best I heard of is 17mpg hwy.

[waumo1]

If your O2 sensors are the originals at 125K miles, they need replaced.

[chucksnee]

_{I get 19.5, I have an 07 with the 4.8. Replaced the air filter with a K&N, Mobil 1 5w30. Whats weird is that I get 19.5 no matter how I drive it...on the HWY or local...Tires are stock and new, with 70,000 miles....}

Edited December 13, 2011 by chuck123