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Pickups Chevrolet Silverado & GMC Sierra 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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| I have an '07 Silverado 4X4 Z71 with the 6.0L engine, 3.73 locking diff and live in Colorado. I am able to consistently get between 18 and 21 mpg with a combination of hilly and mountainous driving. I couldn't be more happy with it. As for the AFM, I can't tell when the truck is running in V4 or V8 mode except to look at the readout on the dashboard. Driving across Nebraska I consistently average 20 mpg in the flat country. In the hilly midwest near the Great Lakes, I'm lucky to get 17 or 18 mpg. In all cases, I drive between 65 and 70 as the law allows. As for trailering ... get the 4:10 axle. I didn't and I'm very disappointed in both performance and mpg ... usually between 8 and 10 mpg. | |
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Currently 43,500 miles on the truck. Daily NJ driver. Average MPG since new is 19.7. Getting consistently above 20MPG in the warm months, and 18-19 in Jan-Feb.
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Replying to: cumminsdiesel (Oct 25, 2008 4:42 pm) |
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| I'm currently shopping for a used (maybe a few years old) Sierra or Silverado. Does anyone know what year the 5.3 was available in these trucks of the top of their head? Thanks. | |
Hi all, I have just taken delivery of an 2005 Siverado 1500HD with 66,000 kilometers (40+ thousand miles). The fuel consumption is atrocious - 12mpg in imperial gallons. (6L & 3:73 diff). Someone told me to check the thermostat as if it opens to early, at to low a temperature, the transmission will never go into "final stage" or overdrive and the diff won't lock causing slipage and higher rpms and fuel consumption. I have never heard of this. Is it a possibility?
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Replying to: dad00 (Jan 24, 2009 1:03 pm) ps. I had a 03 2500hd extended cab 2 wheel drive got 13 town 17 highway and 10.4 towing same trailer it was geared 410 kind of wished i kept this truck only swap because of the 4x4 thing. steve in alabama
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Replying to: hdfxdwg (Jan 29, 2009 6:07 pm) I traded my 2001 2x4 5.3 Sierra non locked rear diff (3:42) for thew 05 4x4 and 6L engine with locked 3:73 to get 4x4 and a bit more towing capacity. The 01 got 20-20 mpg and 13-15 towing. Kinda screwed myself there. On the plus side we are having another one of those winters up in my part of Canada. 4x4 sure makes the driving easier. Now if we can find a couple of ways to up the mileage on the current ones. |
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| I drive 3000 miles per month( mostly highway),.would like to buy a 2008 2500 4X4. What can I expect for MPG? | |
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2008 2wd ext cab / 5.3L / 3.73 Rear / 15k miles I have a heavy foot and do 50/50 driving: 15 mpg consistent.
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