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Chevy Silverado and GMC Sierra Duramax Fuel Mileage

620 messages,  Last post on Dec 15, 2012 at 3:45 PM

You are in the Chevrolet Silverado & GMC Sierra Forum.

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

Messages Page 61 of 63

#597 of 620 They FIXED my turbo and the fuel mileage dropped by coontie66

Oct 06, 2011 (6:31 am)

Back 1.5 years ago the check engine light came on so I took it to the local Chev garage... Five trips later they eventually installed a new turbo in the 06 Diesel Chev. The fuel mileage never returned to its pre FIX of nearly 21 on the road. Now its about 17-18 on the road.
 
This week the check engine light came on again so its back to the Chev dealer. This time he says its a glow plug and the EGR/ERG pump and a dirty air filter. The truck went out of warranty in July this year based on years NOT mileage... it now has 45300 on it. During the discussion he told me that the new turbo that they put on about a year ago produces more boost than the factory model AND less fuel mileage. Not happy with that. At first the dealer wanted $1050 to fix my problem but when he was told I would trade it in first he decided to extend my warranty a BIT and cover most of the costs. My NEW cost is about $250. What I didn't tell him is my next attempt to buy a diesel PU would be a Dodge. Sure wish they were quiter.
 
I will have to say this 06 Chev is rapidly approaching the top of my list of bad vehicles. So far the Chev Vega of 72 fame and the 80 VW Rabbit are on the top of the list with the 99 Ford diesel in 3rd place. This vehicle is catching up fast and could take 3rd place next year.

#598 of 620 06 truck fixed but fuel mileage suffered by coontie66

Oct 28, 2011 (9:42 am)

About a year ago I had the turbo replaced on my 06 Chev diesel. I thought the fuel mileage had suffered and last week the local dealer told me tha the new turbo produces more boost and the miles is off about 3 mpg. Darn I didn't need more boost just more mileage.
 
What to do??? My mileage is about 17---------------grrrrrrrrrrr.
 
Mine now has 45K on it.
 
Had it in for a gloplug and a ERG pump... warranty ran out in July but they covered both with a 100 buck payment. At first they wanted $1050 until I complained.

#599 of 620 Re: 06 truck fixed but fuel mileage suffered [coontie66] by gmcustsvc

Nov 01, 2011 (9:54 am)

Replying to: coontie66 (Oct 28, 2011 9:42 am)
How has it been running, aside from the less efficient fuel economy?
 
Best,
Sarah
GM Customer Service

#600 of 620 Re: 06 truck fixed but fuel mileage suffered [gmcustsvc] by coontie66

Nov 01, 2011 (2:05 pm)

Replying to: gmcustsvc (Nov 01, 2011 9:54 am)
I have only really pulled one time with it since the new turbo and that was with my 12500lb camper. It did really fine.. I have not chipped it yet but its loaded with power.

#601 of 620 Re: 06 truck fixed but fuel mileage suffered [coontie66] by cefloyd

Mar 15, 2012 (8:39 am)

Replying to: coontie66 (Nov 01, 2011 2:05 pm)
what kind of millage did you get pulling your camper i also have a 12500lb camper and I am looking at a 06 hd3500with a 6.6 or a F 350 super duty with a 6.0 and I know alot of bad stuff said about the 6.0 just checking my options

#602 of 620 Re: 06 truck fixed but fuel mileage suffered [cefloyd] by coontie66

Mar 15, 2012 (7:26 pm)

Replying to: cefloyd (Mar 15, 2012 8:39 am)
I was getting 11 mpg pulling my camper before the turbo change... I have not pulled it since the new turbo unfortunately. Both of us have been diagnosed with cancer in the past two years and treated. I think we are fine now just waiting to get time to travel again.. I know that the mileage on the road without the turbo dropped about 2.5 mpg.

#603 of 620 vibration in 2011 2500hd by jimnothappy

Apr 26, 2012 (9:11 am)

I have a vibration in my truck, back to dealer at least 9 times now, no fix, i have 2100 MILES ON IT and i am getting tired of getting the run round . is there a fix

#604 of 620 Re: vibration in 2011 2500hd [jimnothappy] by gmcustsvcsarah

Apr 26, 2012 (9:45 am)

Replying to: jimnothappy (Apr 26, 2012 9:11 am)
jimnothappy,
 
I'm sorry to read that after making so many different trips in for this to be looked at there has not been a satisfactory resolution for you. If we can follow up with your dealership on this, please send us an email at socialmediagm.com with more information (your name/Edmunds username, phone and address, the last 8 of your VIN and current mileage, the name of your dealership, and number of times you've been in for this same concern). My coworker Christina will advise you further.
 
Thank you for your patience, and we look forward to hearing from you,
Sarah
GM Customer Service

#605 of 620 Re: vibration in 2011 2500hd [jimnothappy] by kacansas06

Apr 26, 2012 (12:51 pm)

Replying to: jimnothappy (Apr 26, 2012 9:11 am)
You might take it to a place that does over the road (the big semi's) tires and have them check tire balance. I don't think tires are covered under the warranty. Happy hunting.

#606 of 620 Low economy by pmeinscher

Aug 18, 2012 (5:29 pm)

I have 2007 chevy 4x4 dura max with a milage at about 12 miles per gallon. Was wondering if this unusual or not for that truck I was hoping for much better than that.

Messages Page 61 of 63

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