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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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Replying to: 1offroader (Sep 14, 2007 6:06 am) Thanks! |
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| I am thinking about putting a tonneau cover on my 07 new body style silverado ext cab. I am interested in a tri-fold but I am worried that the black plastic on the tailgate will interfere with the cover. Does anyone have any suggestions on types of covers or if this would be a problem. Thanks for the info. | |
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If your getting lousy mpg and your buddy is not check to see which 5.3 you have? The aluminum block will get the lower millage than the cast iron block in my experience. My aluminum block with 310 hp gets average of 14.1 while my cast iron block 290hp will get 18mpg average and up to 21 mpg on the highway at 70 mph.
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Replying to: phishy (Nov 30, 2007 11:59 am) I have seen mine go into 4 cyl mode about 65 mph while on cruise control. If you are not on cruise control any pressure on the pedal will not allow it the select the V4 mode. If the rpm goes up 1 it will kick into V8. About 5,000 mile on my truck. I was avg 18.3 mph till the winter weather hit and its dropped to about 17.6 but I have it in AUTO 4x4 mode all the time, snowing for 2 weeks straight and roads are mostly snow covered or slippery. A recent 500 miles trip I average 19.7 mpg on relatively flat county on cruise control at 65mph. Coming back I was carrying about 700 lbs of cargo. I also changed all the lubricants in my truck to synthetic, the engine, both axles and the transmission. |
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I'm in the market for a new Sierra/Silverado. I currently have a 06 1500HD Crew 2WD. Happy with the power, but getting 11MPG. Would like to get 4WD and improve the MPG from the 11. The 1500 with 5.3/3.73 with AFM would probably fit most of my needs. However, there are a few times I probably would be better off with a 3/4 or one ton. Question is what are you guys getting with the 6.0 and new 6 spd in the HD. As stated above, the 5.3 would probably fit the needs, but if the current 6.0 with the 6 spd is getting over 15 regularly, I'd prefer that setup. I see GM has the 6.0 with the AFM in the 1500 series. Is the AFM coming to 2500/3500 or is that just silly?
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Replying to: asylum575 (Feb 28, 2008 5:54 am) My question for those who know, is if you have the truck without the DIC buttons, how would you know if AFM is active or not? The book says there is a display regardless of whether you have the DIC buttons or not, but fails to mention how one would know. I drive many days from gas station to gas station only touching the brake pedal and ignition when I leave the first station, stopping at the next one. 60-65 mph, cruise on, all highway. I drove 948 miles this week and might have achieved 18 mpg if I rounded it up. I generally get about 400 - 420 miles per tank and my fill ups are between 22.5 - 24.5 gallons. My simple math tells me that if I were to get even 20mpg, I should go 440 miles on 22 gallons of gas. No, I dont see any indication that AFM even exists. The serial number says it has it, the sticker says it has it, but other than that, there is no indication that it exsists or if it does, that it functions. Ive even driven 2 tank fulls with the trailer button depressed only to find the same exact milage. I love the truck, dont get me wrong. It's not the most comfortable for 6 or 8 straight hours, but it's a truck. My question remains. How would one know when the engine goes to 4 cyl. My next question (assuming there is no way for joe truck owner to know) is how would the dealership test it? Can they hook a computer up to it and see it function, can they engage the EFI manually or however AFM works? How can they show me that it is doing what it says it is or for that matter, even show me that it's installed? 18 is ok? Thats 20% off the sticker. What if your wife was in the grocery store, bought $100 worth of groceries, and the store constantly failed to load more than 80% of those groceries in her trunk? What if you bought an air conditioner rated at 16 SEER only to find out it was a 13 SEER? What if the fuel stations only delivered 80% of the fuel the pump said it did? All I want to know is... Is it there, and if so, does it work (show me). It's a shame a coworker who has the same truck except his is 4wd and he gets over 20 per gallon with the same monthly miles and same type of driving.
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Replying to: doc_holiday (Feb 28, 2008 8:43 pm)
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Replying to: fueledup (Mar 03, 2008 5:30 pm) |
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After looking at the EPA mileage estimates, it looks like a Ram 1500 3.7 with manual gets about the same mileage as a Chevy 1500 4.3 manual, Dakota 3.7 manual, and Ford Ranger 3.0 and 4.0 manual. Is this really accurate considering the size and weight differences between these trucks?
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Replying to: xscout (Sep 10, 2008 12:00 pm) |
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