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Chevy Silverado and GMC Sierra Real World MPG Numbers

116 messages,  Last post on Aug 23, 2009 at 6:14 PM

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What is this discussion about? Chevrolet Silverado 1500, Chevrolet Silverado 2500, Chevrolet Silverado 3500, GMC Sierra 1500, GMC Sierra 2500, GMC Sierra 3500, Fuel Efficiency (MPG), Truck

#107 of 116 Re: 2008 Mileage [ocautoseeker] by bkerchak Mar 25, 2009 (6:22 pm)
Replying to: ocautoseeker (Mar 25, 2009 2:25 am) 2007 New Style 2wd ext. cab / 4.8l / 3.23 rear / 22,000   I get 16 city and 21 highway ... better mpg in the summer and fall... in winter and spring it drops a couple of mpg... I think it has to do with living outside of Philly and the gas mixture that is sold in and around cities to prevent pollution...
#108 of 116 2008 new style 1500 mpg by cac4 Apr 18, 2009 (1:27 pm)
My new truck has been a pain in the ass. It is a 08 1500 ext cab 4.8L / 3.43 rear / 26000 k / amsoil / tonneau cover / 4x4. It has been in for service 5 times. trans housing / trans seals / body molds / and now mpg. I am the 2nd owner and when I got it with 17 k the best I got was 418 for a tank. Now after its been to the dlr the best i can get is 360 to a tank. I live in MI and drive like im 90 (im 25) and use reg gas and never over 70 on the e-way. Is it just me or is this some bad mpg. ??? Should have bought that damn toyota. I try to help out my state and this is what I get.
#109 of 116 Anybody?? by cac4 Apr 22, 2009 (5:46 pm)
I am looking to see what everyone else is getting per tank. On the new model 1500 with the 26 gal. I can only get 360. I talked to a guy at work and he says he gets 450. Is he full of it, or is my truck a junker?? Please reply so I can go to the dlr with some solid info....Thanks Replies to this message: bkerchak (Apr 23, 2009 4:48 pm) 2doorpost (Aug 23, 2009 6:14 pm)
#110 of 116 Mileage by donl1 Apr 23, 2009 (10:47 am)
I just got my 09 1500 crew cab LTZ 4X4 5.3 3.42 gears and a tonneau cover. With only 500 miles on it so far. Filled it twice and got 19.2 and 18.4. I'm interested if anyone has this combo and what kind of mileage they may be getting after 5 or 10K. Did it get better after break in? So far I'm very pleased...first pickup in over 20 years.
#111 of 116 Re: Anybody?? [cac4] by bkerchak Apr 23, 2009 (4:48 pm)
Replying to: cac4 (Apr 22, 2009 5:46 pm) I have an o7 new body style with 4.8 and 3.23 rear with 26 gallon tank and I just averaged about 17 mpg mostly suburbs and highway driving back and forth to work with my last tank full...it is possible to get 400 to 440 out of a tank if you set the cruise on the highway and drive with a light foot on city like driving
#112 of 116 I am jumping ship by cac4 May 01, 2009 (5:06 am)
I will visit in, but I traded my pos chevy in and got a ford. I am a chevy fan, but my latest experience has changed my mind. I wish everyone the best of luck with your gm and hopefully dont have the problems I had.
#113 of 116 2000 Chevy Silverado 1500 2wd extended cab 5.3L by buttermilk May 13, 2009 (11:22 am)
I have a 2000 Chevy Silverado 1500 2wd extended cab with 5.3L v8 that now has 194K miles on it.   I routinely get 18 mpg here in Tulsa, OK area driving 30 miles one way to work. On the highway on long trips I have gotten above 20 mpg consistantly. Best I've done is 21.8 mpg on a trip to Texas a couple of years ago, and that was driving 73-77 mph, and NOT using the cruise control (I get better mpg w/o using the cruise....due to the way I drive....). On that trip, most of the gas contained 10% ethanol too. That trip average MPG was 20.0 MPG, including some city driving as well.   I don't have the AFM on my truck and was hoping that with AFM (I want to get a new truck soon...) that I'd get even better mileage.   I also owned a 2000 GMC Sierra Z71 4x4 with 3.73 gears that would do almost as good on the gas mileage. It was a regular cab, short bed truck. Best I ever got with it was 23 mpg (211 miles on 9.0 gallons of gas). On a return trip from Colorado a few years ago, I averaged 20.5 mpg and for the whole trip I went 1941 miles on 101 gallons of gas for a 19.2 MPG average.   Makes me wonder if the newer trucks are really getting any better fuel mileage, even with AFM.   Regards, Rog
#114 of 116 Chevy Truck Gas Mielage by hutch54 Jun 07, 2009 (10:07 am)
Ok....After reading all the post of the gas MPG of the Chevy trucks everyone is complaining about. Well to tell all...I have 3 chevy trucks, One is a 2001 1500 ext cab 4.8L with 290K, Still get 20mpg doing a commute 0f 200 miles over mountian pass everday. My suburban's 1500 4x4 5.3L, well they have gotten up to 23.8mpg.   The MPG on my trucks and other chevy trucks I hvave driven can be done easy. Don't start off the line like it the drags, do not use the cruise control, and most for the tucks stay under 65. the Sub's 4x4 speed if under 62 will get the most.   Oh, yeah ,,,my brother has a Toyota...gets 15 mpg, and his Ford 1/2 ton 4x4 gets 12mpg.   I will stay with Chevy's
#115 of 116 Re: Better Mileage! [eaubes] by eck_95z71 Jun 08, 2009 (12:20 am)
Replying to: eaubes (Feb 28, 2007 2:22 pm) I drive a 95 GMC Sierra Z71 with an old school fuel injected 350 with LS1 heads, a k&n intake and poweraid throttle body. Even tho its the original engine(minus the heads) and has more than 188,000 miles, it recently dynoed at 394 ponies. I mostly drive hiway and gravel roads and its been gettin close to 21 mpg and around 19 in town. My question to all you GM guys out there is how come the newer, lighter, mostly aluminum engines with better power ratings get worse mileage? My father owns a 96 Silverado as a daily driver and averages 17 mpg hiway with the 5.7 Vortec. This just shows how a few mods which cost close to nothing (bought heads from friend who totalled 01 Z28 for $50) can repeatedly show results on the hiway and still has the power to tear up my 33 inch BFG"s in the mud!
#116 of 116 Re: Anybody?? [cac4] by 2doorpost Aug 23, 2009 (6:14 pm)
Replying to: cac4 (Apr 22, 2009 5:46 pm) 2008 Longbed 1/2 ton - no a/c with the V6.   Windows up or down on the freeway- 20MPG.

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