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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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#33 of 506 D/A mileage by the_vfox Apr 30, 2005 (5:33 pm)
At 23k miles, I get 17-20 unloaded, 10 - 14 towing the 5th Wheel, depending on terrain headwind etc.       2004 Duramax Silverado Crew Cab
#34 of 506 2005 Duramax Fuel Mileage by gemini5362 May 09, 2005 (5:29 pm)
I have just purchased a 2005 HD 2500 Crew Cab Silverado it has the duramax diesel engine and 3.73 gears. I am getting 14 to 16 mpg on the interstate running about 75mpg. With the truck unloaded. Last weekend i was pulling a 16 ft flatbed trailer with less than 1000 pounds of furniture on it my mileage dropped down to 11 to 12 mpg is this normal for a new engine I have about 1000 miles on it. I have been told as the engine begins to break in I will see an increase in fuel mileage at what point should I start seeing an increase. Replies to this message: aarongd (Jun 28, 2005 2:53 pm) unklal (Jul 08, 2005 5:36 am)
#35 of 506 Re: Diesel truck advice for girls! [justatrucker] by laser2 May 31, 2005 (6:04 pm)
Replying to: justatrucker (Mar 04, 2005 2:42 pm) I am in the process of ordering a 2005 Duramax and the dealer told me that the lowest rear axle ratio available is the 3.73....anyone know if this is true...??
#36 of 506 Duramax mileage and service by chvylvr Jun 01, 2005 (4:54 pm)
I drive and 2001 2500hd with the duramax and I love This truck. Yes, I had the injector issue and GM promptly replaced then under warranty with the upgraded models. An aggravation yes, but the "quiet diesel" technology was new and things happen. The Allison transmission seems bulletproof as I have dragged a loaded horse trailer 25 miles with the trailer brakes locked up and didn't realize it till I stopped and saw the smoke from the wheels! I saw no increase in tranny temp! Fuel mileage is probably 17 in city and a stable 20 mpg on the hwy running 70-80 mphs.
#37 of 506 Re: DURAMAX FUEL MILEAGE [blackmax] by honda929 Jun 02, 2005 (7:44 am)
Replying to: blackmax (Sep 19, 2004 1:26 pm) I HAVE A 2005 2500HD DURUMAX LB 4X4. WHEN I FIRST BOUGHT THE TRUCK I WAS GETTING AROUND 17MPH. NOW THE BEST I GET IS 13MPH. I KNOW THE 4X4 MAKES IT WORST. I WAS TALKING TO A GUY WITH THE SAME TRUCK WITHOUT 4X4 WHO GETS 17MPG. BUT I HAVE TO SAY ITS GREAT TO GET 13MPG WHEN YOUR TOWING A TOY BOX OUT TO THE DESERT. SINCE ITS NOT AN EVERYDAY DRIVER I DONT REALLY THINK ABOUT THE MILEAGE.
#38 of 506 Re: [luke6] by honda929 Jun 02, 2005 (7:58 am)
Replying to: luke6 (Apr 05, 2005 8:29 pm) DO YOU KNOW ANYTHING ABOUT TIRES ON THE STOCK WHEEL. I HAVE A 2005 2500HD LB 4DOOR 4X4. I HAVE ALLOY WHEELS WITH THE STOCK TIRE. THE STOCK TIRES LOOK REALLY SMALL ON TRUCK. I DONT WANT TO LIFT IT OR PUT BIGGER RIMS ON IT. I WAS WANDERING IF YOU KNOW A GOOD ALL TERRAIN TIRE FOR THE STOCK RIMS. ONE MORE QUESTION OFF THE TIRE SUBJECT. I GO TO THE DESERT A LOT SO MY CABIN FILTER SMELLS LIKE DUST. BUT I CANT FIND WHERE IT IS. DO YOU KNOW WHERE AND HOW TO GET TO THE CABIN FILTER. THANKS. Replies to this message: gribman (Nov 24, 2009 10:44 am) jerrydock (Nov 25, 2009 3:30 am)
#39 of 506 ALL TERRAIN TIRE SIZE by honda929 Jun 02, 2005 (8:15 am)
DO YOU KNOW ANYTHING ABOUT TIRES ON THE STOCK WHEEL. I HAVE A 2005 2500HD LB 4DOOR 4X4. I HAVE ALLOY WHEELS WITH THE STOCK TIRE. THE STOCK TIRES LOOK REALLY SMALL ON TRUCK. I DONT WANT TO LIFT IT OR PUT BIGGER RIMS ON IT. I WAS WANDERING IF YOU KNOW A GOOD ALL TERRAIN TIRE FOR THE STOCK RIMS. ONE MORE QUESTION OFF THE TIRE SUBJECT. I GO TO THE DESERT A LOT SO MY CABIN FILTER SMELLS LIKE DUST. BUT I CANT FIND WHERE IT IS. DO YOU KNOW WHERE AND HOW TO GET TO THE CABIN FILTER. THANKS.
#40 of 506 CapsLock by kcram HOST Jun 02, 2005 (5:42 pm)
Hi honda929 and welcome to Edmunds!   Just as a matter of info, typing in all capital letters on tthe internet is difficult to read and in most circles is considered shouting. When posting, can you turn off your CapsLock? Thanks!   kcram - Pickups Host
#41 of 506 tires and fuel by roughneck Jun 13, 2005 (10:12 pm)
I recently drove through a dealership and seen a 2004 gmc hd duramax extended cab. it had 285 on it. i looked to see if there was any tire rub on the frame or bumper and didnt see any. but i dont know if anything was done to the torsion bars. it doesn't look like it because it filled the wheelwells out (front and rear) real good. as far as fuel mileage i have been getting about 20-21 doing 70 or so at about 5,000 to 7,000 feet with 45,000 miles on the truck. the real ticket is to get an auxiliary fuel tank in the bed and plumb it into your regular fuel tank. with this i can easily go over 2000 miles before filling up. but i usually take out a small loan when that happens.
#42 of 506 DURAMAX maxed out by maxie05 Jun 15, 2005 (6:18 am)
I has a 2005 DURAMAX. I've done everything to it, AIRAID air filter, Edge Juice/Attitude and 4" stainless steel exhaust with a straight through muffler. My mileage has dropped, have I gone to far? Replies to this message: stoneg (Jul 20, 2005 5:37 pm)

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