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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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#468 of 506 Re: Diesel truck advice for girls! [chani] by svetter May 16, 2009 (11:44 am)
Replying to: chani (Jan 16, 2005 8:34 am) I have driven chev all my life (45 years) but I think am going ford next time The duramx and the allison have been good but I've had lots of problems with other things. (Transfer case, door locks, u-joints, transmission lines,rear end vibration,) So I may try a ford. Besides they have not taken any tarp money. Replies to this message: jbull454GMC (May 16, 2009 7:18 pm) jerrydock (May 17, 2009 5:29 am) jbull454GMC (May 17, 2009 11:38 am)
#469 of 506 Re: Diesel truck advice for girls! [svetter] by jbull454GMC May 16, 2009 (7:18 pm)
Replying to: svetter (May 16, 2009 11:44 am) Working for a Chevy dealer I know about those problems. I will admit, they need to be addressed and dealt with. Along with window regulators, and a few other things. On the Ford subject though, you may want to ask people who have them about the fuel economy. I've talked to a few and they say its horrible. 11 unloaded and 8 with a trailer. Thats more like the old 454 gas engine. They say they pull and haul great just drink fuel. I'm not real thrilled with 15 to 18 on my 08 duramax, truthfully. Especially after talking to people with older ones getting 20 on average. How do you use more fuel and be safer on the enviroment? We can thank the government for that idea...Honestly I don't think there are too many differences anymore. I almost bought a Cummins before I got my Duramax and remember, I work for a GM dealer. Replies to this message: jerrydock (May 17, 2009 5:29 am) jbull454GMC (May 17, 2009 11:38 am)
#470 of 506 Re: Diesel truck advice for girls! [jbull454GMC] by jerrydock May 17, 2009 (5:29 am)
Replying to: jbull454GMC (May 16, 2009 7:18 pm) I just got a nasty surprise. I love my 2005 Duramax 2500 4x4, but I just had to replace the left fron wheel bearing...NOT. There is no such thing. You have to buy the entire assembly. Nearly $250.00. My 89 was repaired for $16.89 in parts. I don't like some "progress". Replies to this message: jbull454GMC (May 17, 2009 11:38 am)
#471 of 506 Re: Diesel truck advice for girls! [jerrydock] by jbull454GMC May 17, 2009 (11:38 am)
Replying to: jerrydock (May 17, 2009 5:29 am) I see this from time to time, and I'll say that I think its a "designed to fail" part. You can't get a regular bearing for any GM vehicle anymore. It all the hub bearing assembly. I think it had a grease zert it would be better off but thats never going to happen. Who am I to say though? I just sell the parts I don't design them.
#472 of 506 Re: Smoke [smokin] by wear04 May 20, 2009 (1:55 pm)
Replying to: smokin (May 07, 2009 4:47 am) Just recently had this happen only have 41k on truck 2006 and they want to replace egr valve??? What have you been told??? Replies to this message: jbull454GMC (May 20, 2009 5:40 pm)
#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

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