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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

#67 of 116 Re: 07 Gas silverado 2500 [coontie57] by rman6 May 06, 2007 (4:42 pm)
Replying to: coontie57 (Apr 19, 2007 5:02 am) Why is everyone so high on the diesels? If you're towing a heavy trailer often, then maybe they make sense. But for standard driving and a little towing is the extra cost and noise worth it? Not to mention they're not as responsive as gas, and although they've come a long way, you still can't just jump in them and go. You've got to wait for the glowplugs, then the motor to warm up. I'm not buying a soccer mom pickup, but I'm not towing around a cat or an 8 horse trailer either. There's only been one response to the 6.0 motor. What kind of mileage does it get, and what is the overall quality of these chevy 3/4 tons? I'm a ford guy who's looking to cross over. All I know about Chevy is that they built a really poor diesel for a long time and the 350 was probably the greatest motor ever made. Plus they're about $3500 cheaper than the new fords. Replies to this message: coontie57 (May 06, 2007 5:31 pm)
#68 of 116 Re: 07 Gas silverado 2500 [rman6] by coontie57 May 06, 2007 (5:31 pm)
Replying to: rman6 (May 06, 2007 4:42 pm) There are a lot of different stories on the Fords. I had a 1999 250 diesel (7.3L) and the engine was fine... but the tranny was a problem. No problems until 72.500 miles then the skids just fell out of the Ford. Two transmissions... and a clip on A fuel injector plug... I sold it at 109,000 miles. I liked the way it drove.. I liked the interior ... very good visibility... and personally I liked the seats.. plush cloth?? My wife and a friend have both had back surgery and neither could stand to ride in it... back aches.. I had no problems.   The diesel Ford got 20 or a little better on the road by itself and a friend of mine with a 6L gas chevy 2500 model is good for about 13 or so.. I think the newer ones might do some better but still way off the 20mpg on the road that both the Ford and my new Chev get.   As far as starting both... the Ford you had to wait on a bit... but not the chevy but its newer... perhaps the Ford is quicker to start now.. they are both much quiter now then in 99.. The noise INSIDE the pu just isn't a problem or issue.. With the new Chev I actually ground the starter last year when I first got it because I couldn't hear it running. I have not done it since..   A friend and I pulled our 8-9K campers to Alaska two years ago beginning May 12th.... the difference in fuel mileage between the diesel and the gas PUs was truly something to see. Stop after Stop after stop he put in much more fuel and we HAD to use the same gas stations as that's all there is... about every 100 miles. Our two campers were the same weight... same model and make... Two trucks... a 99 Ford Diesel ... a 2002 Chevy 6L gas.. Between the two of us we drove about 28,000 miles on that trip just under 4 months and didn't have a single PU problem... either of us.. The 6L gas engine pulled the Canadian mtns and those in AK just fine... perhaps better than the 99 Ford. But it made it just fine.. Ford Motor Co didn't see fit to give me a transmission temp guage so when the Chevy would stop to cool down I did too. There were several times when the EGT got nearly too hot so I had to hold back on the throttle to keep the turbine from getting too hot.   We both NOW own 06 Chevy Duramax Diesel PUs.. We both bought larger campers .. more weight... and they pull the weight just fine.. 12000 lbs perhaps for me..less for him... 11.5mpg is the best I have gotten so far on flat land in FL pulling the camper... 10.5 on the interstate with big hills or NC mtns. OnStar just sent me an email sayhing I have 11,050 miles on it now so its still not broken in yet. Pulling my 21 ft bass boat (200 hp) it gets about 15-16.5mpg..and that's about the best you could hope for with a 6L gas engine with nothing in tow or onboard...   Inside the chevy the seats are nice ... leather... very comftrable and the wife's back doesn't hurt... The XM radio is neat and the ONSTAR is just there till July .. I have never had heated seats before and that was a nice surprise this winter.   Hope I answered your questions.   I certainly don't have anything against Ford... I liked mine... and would still own it but the tranny deal was expensive and based on my experience I thought I could expect more trouble.. Ford did nothing to help me with this by the way except to take my $2850 for the first one... the second one was under warranty. Ford Motor Co and the local dealer played the good cop : bad cop deal to the max.. It was nearly funny with each pointing to the other..   Something to also consider is the problem Ford is having NOW with their diesel engine manufacturer... I hear they are being sued by them.. or the other way around.. The two are not happy campers right now anyway. Can't remember what the problem was.. tardiness in production or something..   I don't know what the gross towing capacity of the 6 L engine is but it used to be around 10,000,,, the 06 Chev diesel is/was 15,500 lbs as I recall. I was told early in life to not operate equipment/machinery near the capacity of the unit but somewhere within the middle range of the equpment... WELL that's what I was told anyway so that's partly why I like the diesel.. I am several thousand pounds under what it is listed as its capacity to haul.
#69 of 116 Questions by kipk Jun 19, 2007 (3:21 am)
Hi,    Got some questions, hope you guys and gals have some answers!   Is there any type of indicator, such as a light, to let the driver know if the 5.3 is in 4 cylinder or 8 cylinder mode?    Does the engine switch to 4 cylinder mode only at "LIGHT" cruising applications, or will it also use 4 cyl when idling or driving around local and back roads with a very light foot?    Is there a "Real Time MPG" display as well as the "Average Mileage" one?   If so, are the above in a particular package or trim level?         Thanks, Kip
#70 of 116 Answer to Questions by nascar57 Jun 19, 2007 (5:50 pm)
Yes on the 07 Chev's there is a display that instantly reads out V8 Mode or V4 Mode, this is displayed on the screen the same time as the instantaneous mileage is shown. There is another screen that shows overall average mileage. As far as I have experienced with my pickup, if you make your foot a little bit lighter the V4 will in fact help you out with overall mileage. If you can keep the cruising speed under 70 mph, it will work but once the pickup gets over 70, I rarely see mine switch into V4. As far as I know, this is available on all of the Silverado's, no special package needed, mine is an LT1 and every pickup I have seen has it on. They are a dream to drive. One other thing for people reading this, there is a new fuel additive that has been stirring up excitement here in the heartland. It is a product made in Minnesota and has been delivering a 10-15% minimum increase in gas mileage. I have friends that have used it, went from 17 in their pickups to 18.5-19 automatically. It is called CA40G, there is a web site you all should visit www.ca40g.com This stuff is pretty amazing from what I've heard, I have a gallon on order and will report back. It works with any fuel (Gas, Diesel, E85) Would really help if everyone instantly got a 15% reduction in consumption.
#71 of 116 Gas Mileage with 07 Silverado by bkerchak Jun 29, 2007 (7:03 am)
Just purchased a 07 Silverado Ext Cab with 4.8 V8 and 3.23 gear ratio that is rated at 16 city and 20 highway. I drive a combo of city and highway miles each day. Can I expect the mileage as advertised on the sticker or will it be less ? What changes or add-ons to the truck would help improve or maintain the 16/20 numbers ? Thanks for the feedback !
#72 of 116 2007 Chevy Silverado 5.3L fuel mileage by oakrad Jul 07, 2007 (4:30 pm)
#73 of 116 2007 Chevy Silverado 5.3L fuel mileage by oakrad Jul 07, 2007 (12:11 pm)
What are you getting for fuel mileage from your 2007 Chevy Silverado? I have around 350 miles on mine and the obc says it is averaging around 13.9. I have the 5.3L with 3.73 rear end and 4wd.
#74 of 116 07 Fuel Mileage by lionclawz Jul 07, 2007 (4:30 pm)
I have the 5.3, 2x4 and I avg 19.2 hwy, 16.9 city. Xtended cab LTZ - currently have little over 4000 mi.
#75 of 116 Mileage update by bkerchak Jul 22, 2007 (10:13 pm)
I have an 07 4.8 4x2 with 3.23 rear end and I recently got 15 mpg on my first tank full of 87 octane doing city driving with the a/c on.....my second and third tanks were from a road trip to my cabin that is 300 miles each way of strictly highway driving and I averaged 19 mpg......not bad for a brand new engine that is just getting broken in......I would say that the sticker mpg of 16/20 are true if you stay at 65 and don't mash the pedal....all in all a great truck with good mileage that you can load up with all of your gear and the kids......
#76 of 116 fuel milage by dwyerchevy07 Jul 23, 2007 (3:41 pm)
I have a 5.3 4x2 3.73 (whichever ratio) 245 r17 tires and have almost 7k miles. I would think GM could do better for us who do not want 4wd to be able to get a min of 22 mpg. That truly is not too much to ask for a consumer who pays 30k for a truck. Yes, I know it is a truck but this technolgy we have today can do better. I also have the flex fuel option......E85 what a savings. I can buy gas at $3.05 in Michigan for 87 O and then buy E85 at $2.85....The saving well it is not a savings if you do the math. On a full tank of gas you lose over 60 miles per tank. That is about 4 gallons of gas. If you bought 87 O you would have went further...I know, I know, you save the environment...If you just bought E85 all year per tank you would lose $7.00 per tank. If you fill up once every week it would cost you an extra $364 a year. That is just about a truck payment. The consumer is always paying...we pay for the green of the environment and the vehicle....where does the manufacturer come in????? Frustrated on the gas situation. Respectfully' dwyerchevy2007

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