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Chevy Silverado and GMC Sierra Duramax Fuel Mileage

491 messages,  Last post on Nov 11, 2009 at 12:54 AM

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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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#117 of 491 Re: '06 DMAX [poodles] by 2fastdre Oct 21, 2005 (3:13 pm)
Replying to: poodles (Oct 21, 2005 1:06 pm) Is it the new 360 HP / 650 lb-ft DMAX? I am also thinking about getting a 2006 2005HD 4x4 with DMAX. I was just building one on chevrolet.com and saw a 360 HP DMAX as an option for 2006. I ruined a pair of perfectly good pants! Dang! I guess the Torque wars are far from over. Dodge and Ford better step up to the Chevy, or Chevy will just keep eating them for breakfast.   2FastDre.
#118 of 491 Re: Sunroof Option on a 2005 2500HD [stoneg] by stoneg Oct 23, 2005 (5:21 am)
Replying to: stoneg (Oct 07, 2005 6:16 am) update....yes there is. If you are looking at adding the Edge with Attitude monitor to your 2500HD, and it has a sunroof, the overhead console mount on Ebay will not work for your truck. Also the black plastic one that says it fits all makes and emodels will NOT work if you have the sunroof option. You have 3 mounting options: Use the supplies mount, use a pillar mount, or what I did, drill a small hole in the smaller of the two lower consoles for the wire to go though, and sqeeze in. Its rare that people in the truck ever even ask, "hey what's that?" It just doesn't look like it has been added aftermarket. If you DONT have a sunroof, the overhead console mount with the two built in auxillary switches looks awesome.
#119 of 491 Re: DURAMAX FUEL MILEAGE [stoneg] by jayceethe3rd Oct 25, 2005 (9:51 am)
Replying to: stoneg (Sep 25, 2005 5:14 am) stoneg if you don't mind me asking where did you purchase your aftermarket torsion keys at ?thanks Replies to this message: stoneg (Nov 06, 2005 6:15 pm)
#120 of 491 Re: DURAMAX THROTTLE RESPONSE [series60] by aarongd Oct 27, 2005 (12:30 pm)
Replying to: series60 (Oct 02, 2005 7:15 pm) funny you should ask. today i had the exact problem you are talking about today. i also have an 05 duramax. could"nt get the rpm's above 2000 rpm's. you described my problem to a tee. it's on the back of a flat bed as i speak. will let you know what the problem is after it get's back from the dealer!! Replies to this message: aarongd (Oct 31, 2005 3:26 pm)
#121 of 491 Re: DURAMAX THROTTLE RESPONSE [aarongd] by aarongd Oct 31, 2005 (3:26 pm)
Replying to: aarongd (Oct 27, 2005 12:30 pm) the dealer finally figured out the problem. it was a clogged fuel filter!!! i have 16,000 mi and i can't believe it was clogged!!! and they wanted to charge me $180.00 to fix it. say's it wasn't under warrenty!!! say it's like an oil change. good thing i spent $49,000 on a chevy. might want to get your own from a parts store!!!!!!!!!!!!!
#122 of 491 Re: DURAMAX FUEL MILEAGE [jayceethe3rd] by stoneg Nov 06, 2005 (6:15 pm)
Replying to: jayceethe3rd (Oct 25, 2005 9:51 am) at a place in Tallahassee, FL called MINCO If your nowhere near here, look on EBay, I've seen them there for, I think around $40-$60. After you change them out, you'll need to get your truck re-aligned. If you want to get that "cadilac" ride back after the torsion key install, switch your front shocks out to the Bilstien 5100 series. These shocks are longer to accomodate the 2.5 inch increase in height. I didn't do it at first, and the ride was pretty bad going over even a speed bump at low speeds. It seemed as though the truck would "top out" causing the truck to slam up and down. If you do it (highly recommended) go ahead and spend the extra $100.00 on the shocks. I have seen the shocks in accessory catelogs for less, but I had minco order and install these as well. I get lots of compliments at stop lights, gas stations, etc. for the way the truck sits level. Good Luck.
#123 of 491 05 D-Max by lt16spdss Nov 10, 2005 (7:13 am)
I have an '05 2500HD Crew 4x4 D-Max/Allison... I love this truck. I bought her new on May 1, and since then have put 18,750 miles on her. This truck is my daily commuter, not to mention I've towed everything from bobcats with a total load of 12k on the ball hitch to little pup trailers. I have found my normal unloaded mileage with my commuting around the DC area, has averaged 17-18.5 mpg's, on the highway unloaded I have found I get about the same but I'm holding 75mph. I have a K&N filter in mine, and haven't noticed a difference in the mileage or performance at all. One thing I noticed that did cause a change in my MPG's was source of the diesel I was using. I have found that getting my diesel from a quality supplier helped in my MPG's. I'm currently looking to level my truck and put 285's on her. I'm planning on using a kit from ORU (offroadunlimited.com) and they sell the kit with the longer Bilstein 5100's for a little over $400. I'm also looking at putting in either a Banks Big Hoss kit, or an Edge Juice with Attitude monitor, with the appropriate opening up of airflow. Any one have any suggestions or stories about using either of these 2 particular products? Replies to this message: roughneck (Nov 11, 2005 3:28 pm) stoneg (Nov 11, 2005 3:46 pm) stoneg (Nov 11, 2005 3:41 pm)
#124 of 491 Oil Change by spademan Nov 11, 2005 (12:25 pm)
I have an 01 X-Tended Cab 4x4 with the Allison and D-MAx of course. I live in Iowa where winters are kinda cold. This is my first Diesel and I'm curious to what anybody else is using for engine oils out there. I can't afford Amsoil or Royal Purple, but any info would help. By the way, I get 19 mpg city/ 24 highway. Thanks Replies to this message: roughneck (Nov 11, 2005 3:37 pm) kcram (Nov 13, 2005 5:41 pm)
#125 of 491 Re: 05 D-Max [lt16spdss] by roughneck Nov 11, 2005 (3:28 pm)
Replying to: lt16spdss (Nov 10, 2005 7:13 am) I have a friend with a 2004 ford f-250 with the Edge Juice system, air intake system and aftermarket 4" exhaust. It tore his truck up. He had to put a new tranny in it and just before he got rid of it the motor was running really poor. Ford wouldn't replace the tranny under warranty. Not a cheap tranny for him. Personally I would go with the Banks system and upgrade the tranny with a stouter torque converter or aftermarket perfomace tranny(ATS or BD) along with the other modifications. That's what I want to do to my truck(2004 2500hd duramax). Replies to this message: stoneg (Nov 11, 2005 3:46 pm)
#126 of 491 Re: Oil Change [spademan] by roughneck Nov 11, 2005 (3:37 pm)
Replying to: spademan (Nov 11, 2005 12:25 pm) spademan   I live in wyoming and winters here are pretty cold. It's not uncommon for the high temperature to be below zero. I run Shell synthetic rotella 5w-40 all year. But 10w-40 or 15w-40 should work all right. Make sure you get a diesel motor oil. And I always warm up my d-max for at least 15 min. Replies to this message: kcram (Nov 13, 2005 5:41 pm)

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