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Chevy Silverado and GMC Sierra Duramax Fuel Mileage

506 messages,  Last post on Nov 30, 2009 at 5:21 PM

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

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#473 of 506 Re: Smoke [wear04] by jbull454GMC May 20, 2009 (5:40 pm)
Replying to: wear04 (May 20, 2009 1:55 pm) I have seen two EGR valves replaced. The first was only at about a thousand miles the other was at over one hundred thousand miles. Personally I think emissions on a diesel engine are about as useful as an elevator in an outhouse. But the federal gov is pushing it. On the probem though, I wonder if it doesn't have to do with injector problems. Too much soot clogging them from using too much fuel.
#474 of 506 2007 duramax by bama13 May 21, 2009 (4:48 pm)
I have a 2007 duramax with 40,000 miles on it. The truck now has had two episodes where the engine would not idle right(sounded like it was missing) when stepped on throttle engine would go to about 1500 rpm and then pull down. truck would not run right and had no power to drive on trailer. check engine light came on both times, now truck at dealer, no codes reported and truck is now running ok. has anyone had anything similar? oil and fuel filter changed regular. no other problems with truck. both times this happened truck had been drove for 30-45 mins then off for 30-60 mins, when truck was restarted had problems. thanks Replies to this message: jbull454GMC (May 21, 2009 6:22 pm)
#475 of 506 Re: 2007 duramax [bama13] by jbull454GMC May 21, 2009 (6:22 pm)
Replying to: bama13 (May 21, 2009 4:48 pm) Two questions for you. First, what was the temp outsided? Also, how much fuel was in the tank? Plus, there could have been water in the fuel too.
#476 of 506 Duramax fuel economy by jbull454GMC May 31, 2009 (6:19 pm)
Okay, back to this. I have an 08 GMC 2500HD with the dreaded DPF on it. I have recently put Mobile 1 in my truck for oil. I have also filled the tank with B5 biodiesel with Lucas fuel additive. I have noticed before with biodiesel I have better power and economy. I was not expecting the improvement I got with all of the above. I have gone from an average of 15.4 to 18.6 mpg. Its got me wondering how well it does when I switch to Amsoil which is my prime directive soon. I know one thing for sure. I'm not complaining with the price of fuel creeping up again. Any further thoughts on this by all means let us all know!
#477 of 506 0 to 60 by ozzynmax Jun 02, 2009 (12:37 pm)
how many feet dose it take to hit 60mph in 05 duramax 2500
#478 of 506 0-60 by ozzynmax Jun 02, 2009 (12:49 pm)
basically im trying to find out some info on mph per feet a chp said i was clocked at 57 mph within 300 to 400 feet id like some info that would help me fight this ticket
#479 of 506 0-60 by ozzynmax Jun 02, 2009 (12:52 pm)
is there any printed articles with proof of 0-60 times on a 2005 chevy duramax diesel 2500
#480 of 506 Get a lawyer by jerrydock Jun 03, 2009 (3:33 am)
Stop wasting your time trying to defend yourself and hire a good lawyer. They are worth the money...22 citations...no convictions here.
#481 of 506 On the 0-60 by jbull454GMC Jun 03, 2009 (2:30 pm)
Ozzy, I'd have to agree with Jerry. Get a good laywer, and in addition get a good fuzz buster. I'm waiting to see a Duramax powered police pursuit vehicle. The only time it would be funny is when there is a high speed chase with a sports car and they get run down by an oil burner.
#482 of 506 Re: low fuel rail pressure [jodie1614] by unionman1 Jun 13, 2009 (11:34 am)
Replying to: jodie1614 (Apr 26, 2009 4:43 pm) More that likely you need to change your fuel filter. You might want to increase the blend of diesel vs. oil. I have an 2003 and ran home brew bio the whole time diesel fuel was above $3.00. The fuel filter was the only problem I had.

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