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Chevy Silverado and GMC Sierra Duramax Fuel Mileage

505 messages,  Last post on Nov 28, 2009 at 11:02 AM

You are in the Diesels Forum. Your Host is kcram

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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#127 of 505
Re: 05 D-Max [lt16spdss] by stoneg
Nov 11, 2005 (3:41 pm)
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Replying to: lt16spdss (Nov 10, 2005 7:13 am)

Ive got the exact same truck, K&N filter (not the entire intake) already did the leveling kit, 5100's, 285/75/16 BF Goodrich AT TK KO's (had to still trim the front valence a little to keep from rubbing. I did the cat back Banks 4" Stainless Exhaust with the straight thru muffler and the 5" tip. I was having a hard time deciding which programmer to go with also. It was between the Banks or the Edge with attitude. I decided on the Edge for two reasons. (1) I liked the in cab monitor better, and (2)every single person with a D-Max that I met who did install a programmer went with the Edge. I have had absolutely no regrets. I also talked to a diesel specialist (Shivers Diesel)and the Edge was the one he recommended for the D-Max. You are getting some awesome mileage!! I bought mine about 3 months ago, and now have about 6,000 miles, but have NEVER seem mileage like that. Most of my driving is stop and go, but I did level kit 2 days after the purchase, and swap tires within 5 days. Maybe its the tires???(or my heavy foot) My city MPG averages 12.5
#128 of 505
Re: 05 D-Max [roughneck] by stoneg
Nov 11, 2005 (3:46 pm)
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Replying to: roughneck (Nov 11, 2005 3:28 pm)

Every aftermarket shop around here (including the Diesel Specialist) recommends the Superchips for the Powerstroke. My best friend and neighbor has the '04 F250 with the 6.0, 35" BF's, installed the Airade intake, Superchips programmer, and a 4" Exhaust, and loves it. He has had absolutely no problems, and he now has close to 55k on it.
#129 of 505
shocks by roughneck
Nov 11, 2005 (4:17 pm)
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stoneg
  
On your Bilstien shocks what was the size of the shocks? How much of a bigger shock did you have to get? I only cranked my torsion bars. I was thinking of going with the Rancho rsx self adjusting shocks or bilstiens. And on the matter of the banks or juice I like the pda system that banks is got better the juice module. But they both sound really good. I just don't have the money to do it right now.
#130 of 505
Re: shocks [roughneck] by stoneg
Nov 12, 2005 (6:57 am)
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Replying to: roughneck (Nov 11, 2005 4:17 pm)

I'm not sure what the size was on the 5100's, but they made all the difference in the ride. I never turned the torsion bars, I switched the torsion bar keys which lifted the front by 2.5 inches (level). The ride was really rough due to the stock shock not being long enough, so I had them switched out to the 5100's. Yeah, I saw the PDA version, but it made the kit very pricey, and where in the hell would you mount it to where you could actually use it? To me it is too big to mount (and keep everything stock looking), but the display to small. I mounted the Edge monitor in the small console in the dash, and rode my wife around at night with the thing all lit up, and after about a 25 minute ride I had to point it out to her!! Very clean stock look to it. Now before you say she is unobservent, she noticed the truck being level, and totally shocked me when she asked if I lifted the truck.
Try Ebay for the programmer..I saved alot of $$$ there on it, and my Banks exhaust.
#131 of 505
Re: Oil Change [roughneck] by kcram HOST
Nov 13, 2005 (5:41 pm)
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Replying to: roughneck (Nov 11, 2005 3:37 pm)

Even in sub-zero, 15 minutes to warm up a diesel really isn't helping the engine. Diesels will generate heat much faster when they're actually working, and that means moving the truck and going through the gears. Even sub-zero, my Cummins is put in gear after no more than 3-4 minutes unless I'm brushing off the snow... then the truck is driven as soon as I get back in the cab. I have full heat in just 5 minutes at highway speed.
 
kcram - Pickups Host
#133 of 505
warm up time by roughneck
Nov 14, 2005 (1:24 pm)
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We have diesel electric generators(catapillars) at work and if you don't let them warm up 15 minutes or so and then put a load on it will kill the motor or have big puffs of black smoke coming from the exhaust just barely chugging along. So I still believe in warming mine up more than 3-4 minutes.
#134 of 505
buying 2006 Duramax by turbo8
Nov 14, 2005 (8:03 pm)
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Iam buying a 2006 LBZ crew cab 4x4 in 2 days. I could use some input! Should I be getting the 310 hp model because it is a whole lot cheaper (thousands) Or is this new Durmax the way to go. Is fuel mileage the same. Or should I be buying a gas Silverado Help!
#135 of 505
Re: buying 2006 Duramax [turbo8] by spademan
Nov 15, 2005 (7:59 pm)
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Replying to: turbo8 (Nov 14, 2005 8:03 pm)

Anybody I have talked to that has the big V8 is only getting in the mid teens for mpg empty. After they load them up it drops down to 10 or lower. I got the DMax for this reason and get 18 in town and almost 24 on the highway. It depends a lot on how you drive,
#136 of 505
Re: warming up a diesel in cold weather. by 2k5spdcummins
Nov 17, 2005 (1:40 pm)
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I will have to agree with Kcram on the warm up. Yea you don't want to start out full throttle blasting down the road but idling for 15minutes is a waste, it will never really warm it up in cold cold conditions. I usually startup and idle for around 5minutes or so then head down the road but going very easy starting out. Once you have driven a mile or two down the road it will warm up in a heartbeat. If you live in a colder area you might think about plugging in the block heater.
 
2000 Dodge Ram2500 regular cab 4x2 with 5speed.
 
25mpg hwy (A/C and 70mph)
20mpg city (no A/C)
17-19 City (With A/C)
lowest mpg 16.4mpg pulling a 17ft. ski boat rural driving.

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