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Community Rules

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General Topics
Specialty Forums

911 Problems Forum

Truck won't start or drive? Post here!
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Wheels & Tires

Discuss what wheels & tires are right for you.
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VIN Check

A place to check out the past of your Duramax. Please be patient as the site VIN checkers are volunteer.
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8.6K
2.4M

Alternative Fuels Diesel Additives Lubricants

Discussion of diesel, its various additives, oils, lubricants and alternative fuels IE: Bio-Diesel ect...
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14.4M
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14.4M

Maintenance

Discuss scheduled maintenace, capacities, filter part numbers, etc.
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Drivetrain

Discussion on gearing, CV joints, driveshafts, axles, brakes, etc.
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Transmission Shop

Discuss the Allison OEM, aftermarket, and the ZF-6.
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Gauges, Electronics and Wiring.

A place to discuss electronic / wiring issues and what gauges, audio, video, nav systems, lights, ect. are right for you.
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EFI Live

Place for your EFI questions
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97.8K
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Competition

Discuss Drag Racing, Sled Pulling, and Dyno Event setup, technique, and results.
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How To's, DIY and Write ups

DuramaxForum How To's, Do it Yourself Guides, and other write ups. Only How TO post belong in this forum!!! If your NOT showing/telling us HOW TO then DO NOT post it here.
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Behind The Garage Door

For your garage / shop including tools & equipment
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Chevy / GMC truck Non Powertrain Forum Discussion of 01+GM truck topics not related to the Powertrain, interior, suspensions, body, ect.

2020+ (Non Powertrain)

Discussion of 2020+ topics not related to powertrain
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2017 - '19 (Non Powertrain)

Discussion of 2017 - '19 topics not related to powertrain
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2011-2016 (Non Powertrain)

Discussion of 2011-2016 topics not related to powertrain
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27.6M
58.6K
27.6M

2007.5 + (GMT 900) Non Powertrain New Body Style

Discussion 07.5 - 2010 Topics Not related to the Powertrain, interior, suspensions, body, wheels, tires, ect.
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36.1K
14.5M

2001 - 2007 (GMT800) Non Powertrain

Discussion of 01 to 07.5 Topics Not related to the Powertrain, interior, suspensions, body,wheels, tires, ect.
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12.2M
24.5K
12.2M

2015 and up Canyon / Colorado (Non-Powertrain)

Discussion of '15 and up Topics Not related to the Powertrain, interior, suspensions, body,wheels, tires, ect.
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Canyon / Colorado XLD28 Forums

2016+ XLD28 Duramax Powertrain

Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission, Etc.
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2016+ XLD28 Performance Parts Discussion

Discussion of Performance Parts For the '16 and up XLD28 Duramax Trucks No Advertising
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Chev / GMC Duramax 2020+ LM2 Forums

2020+ LM2 Duramax Powertrain

Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission, Etc.
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3.8M

2020+ LM2 Performance Parts Discussion

Discussion of Performance Parts For the '20 and up LM2 Duramax Trucks No Advertising
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Chevy / GMC Duramax 2017+ L5P Forums

L5P TSB (service bulletins, recalls, updates)

Postings of Tech Service info for any New L5P engine issues.
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1.3M
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2020+ GM T1 Platform Powertrain

Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission, Etc.
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2.2M
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2.2M

2020+ GM T1 Platform Performance Parts Discussion

Discussion of Performance Parts For the 2020 and up L5P Duramax Trucks No Advertising
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2017-19 GM T-K2 Platform Powertrain

Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission, Etc.
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12.8M
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12.8M

17-19 GM TK2 Platform Performance Parts Discussion

Discussion of Performance Parts For the '17 and up L5P Duramax Trucks No Advertising
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Chevy / GMC Duramax 11-16 LML Forums

11-16 LML Duramax Powertrain

Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission, Etc.
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52.9M
97.5K
52.9M

11-16 LML Performance Parts Discussion

Discussion of Performance Parts For the 2011 to 2016 LML Duramax Trucks No Advertising
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Chevy / GMC Duramax 07.5-10 LMM Forums

07.5-10 LMM Duramax Powertrain

Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission, Etc.
72.8K
36.2M
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36.2M

07.5-10 LMM Performance Parts Discussion

Discussion of Performance Parts For the 2007.5 to 2010 LMM Duramax Trucks No Advertising
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19.4M
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19.4M
Chevy / GMC Duramax 06-07 LBZ & LLY Forums

06-07 LBZ & LLY Duramax Powertrain

Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission, Etc.
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40.4M
81.8K
40.4M

06-07 LBZ & LLY Performance Parts Discussion

Discussion of Performance Parts For the 06-07.5 LBZ/LLY Duramax Trucks No Advertising
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18.1M
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18.1M
Chevy / GMC Duramax 04.5-05 LLY Forum

04.5-05 LLY Duramax Powertrain

Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission, Etc.
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49.7M
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04.5-05 LLY Performance Parts Discussion

Discussion of Performance Parts For the 04.5-05 LLY Duramax Trucks No Advertising
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16.7M
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Chevy / GMC Duramax 01-04.5 LB7 Forums

01-04.5 LB7 Duramax Powertrain

Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission, Etc.
149K
69.3M
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69.3M

01-04.5 LB7 Performance Parts Discussion

Discussion of Performance Parts For the 01-04 LB7 Duramax Trucks No Advertising
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Gm Diesel Non-Truck Section Discussion of GM Diesels Installed In Vehicles Other Then Trucks

Kodiak & Topkick Forum

Discussion of Medium Duty
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Get In the VAN!!!

Discussion Of GM Diesel Vans..... And whatever TheStepChild wants
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Suburban and SUV

Discussion of Diesel Installed SUV's
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Duramax Engine Swaps

If you have installed a Duramax in anything it was not designed for, Post it here.
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Pre Duramax Discussion

6.2L Diesel Forum

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6.5L Diesel Forum

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Non Duramax Discussion

Diesels

Discussion of anything diesel powered. No Duramax.
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Gas Burners

Discussion of anything Gas powered.
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4.1M
15.1K
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Marketplace

For Sale Section

Sell your used trucks, parts, accessories. PRIVATE SELLERS ONLY.Seller must own items listed for sale. Requires a post count of 25 before you can post. Sellers MUST post a price if you list something. This forum is not E-Bay.
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Looking For/ Wanting To Buy

Looking for something? Post a wanted ad here!
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Trade / Barter

Have something to Trade? Skills to Barter? Post an ad here!
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989
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CraigsList / eBay Finds

Find something cool relating to GM diesel trucks on eBay? Post it!
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1.6M
6.9K
1.6M

Canada, eh

For Sale - Canada
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Great Deals

Have you found a Great Deal? Share and find discounts, sales, and deals found online. (No Commercial, Vendor, or Private Party posting.)
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Vendor Member Section Want to Grow Your Business? Learn more about becoming a Supporting or Premium Vendor

Vendor Spotlight! Great Deals for Members

Our vendors not only help support our community, but they also offer amazing deals to our members. Check this forum often for all the specials, deals, and announcements.
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5.6M
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Howes Products

For over a century, Howes has been developing the highest quality, proven lubricants and diesel fuel additives that clean, protect, and perform. We are committed to providing the highest performing products for your vehicles and equipment. Proven to work and containing absolutely no alcohol or harmful solvents, you can be confident that all Howes products are Tested. Trusted, Guaranteed.
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CARiD.com

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Diode Dynamics

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Form Lighting

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Lincoln Diesel Specialties

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Rancho Suspension

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Strictly Diesel

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Regional Events and Rally's Truck Meets, Dyno Days, Drag Racing, Sled Pulls, Area member affiliations (6.6Mafia)

National Events

Anything that you deam worthy of a national event. Your event may be moved to another region at our discretion.
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Northwest Events

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Southwest Events

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South Central Events

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Great Lakes Events

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Northeast Events

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Mid-Atlantic Events

DE - DC - KY - MD - NC - TN - VA - WV
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Southeast Events

AL - FL - GA - SC
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Canada

The whole thing
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Latest Posts See all new posts
  1. I have a 2009 Chevy Silverado 2500 HD Duramax I’ve been having issues when I turn my truck off take the key out it continues running I’ve replaced the ignition switch it did not help I end up having to pull the relay under the hood to shut the truck off, but I noticed my Fass system continues...
      1 reply   16 views
  2. Is there a fuse I can pull to do this without causing any other issues? Unplug the antenna? Any advice? Thanks
      124 replies   10K views
  3. 3 days old brand new, truck would not start. I had mentioned several times to the sales guy during purchase that there was corrosion on the batteries and all around under the hood, upon pickup they said if the technician didn’t clean or clear it or anything than it was not an issue. 3 days later...
      28 replies   2K views
  4. My first diesel, bought to pull a 5th wheel. We love the truck. Pulls great and very stable! I'm at 3k miles now, and looking to do the first oil change. The oil is black! Is the oil ok, or do the oil change? Thanks for your suggestions.
      5 replies   107 views
  5. This is pretty much how it looked when I picked it up. Gonna start one of these things called a build thread. Bought the truck in Tremonton UT. From a small dealership who bought it at an auction earlier that summer. It was bone stock as far as engine was concerened. Came with 20" Foose...
      124K replies   5M views
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