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  1. GM-Trucks.com Original News & Product Reviews

    1. General Motors Product and Industry News   (18,619 visits to this link)

    2. The GM-Trucks.com Garage - Vehicle Testing & Product Reviews   (15,772 visits to this link)

    3. The Newsroom Archive

      Original General Motors, Chevrolet, GMC, and other Industry News. Our archive for articles published before October 2019. 

      13.2k
      posts

    4. The Garage Archive

      Our original product review and discussion review archive. For articles published before October 2019. For current articles, see our all new Garage!

       

      1.8k
      posts

  2. Next-Generation 2026 Chevrolet Silverado & GMC Sierra Speculation & Rumors

    1. 2026 Chevrolet Silverado & GMC Sierra

      Speculation, discussion, and conversation surrounding the future next-generation Silverado and Sierra. Our best guess is they will debut around the 2026 model year time frame. Submit your guesses, wants, needs, and any news here to stay on top of the rumors. 

      32
      posts

  3. 2022-2026 Ultium Electric Vehicle Forums

    1. 2022-2025 GMC HUMMER EV Pickup & SUV Forum

      Offical discussion forum for owners of the 2022-2025 GMC HUMMER EV Electric Pickup and SUV - based on General Motors Ultium Platform. 

      276
      posts

    2. 2024-2025 Chevy Silverado EV & GMC Sierra EV Forum

      The ultimate discussion forum for owners and enthusiasts interested in the 2024-2025 Chevrolet Silverado EV and GMC Sierra EV.

      46
      posts

  4. 2019-2025 Chevy Silverado & GMC Sierra Forums - T1XX Platform

    1. 2019-2025 Silverado & Sierra

      Research, purchase, get help, and join other enthusiasts to talk about the 2019, 2020, 2021, 2022, 2023, 2024, & 2025 Chevy Silverado 1500 & 2019, 2020, 2021, 2022, 2023, 2024, & 2025 GMC Sierra 1500

       

       

      190.7k
      posts

    2. 2020-2024 Silverado HD & Sierra HD

      A forum to discuss topics directly related to the 2020 - 2024 Chevy Silverado HD & GMC Sierra HD 2500 & 3500

       

       

      42.4k
      posts

    3. 2021-2025 Tahoe, Suburban, Yukon, Yukon XL & Escalade

      The official forum to discuss the Chevrolet Tahoe, Chevy Suburban, GMC Yukon, GMC Yukon XL & Cadillac Escalade for the 2021 through 2025 model years. 

       

      1.3k
      posts

  5. 2014-2019 Chevy Silverado & GMC Sierra Forums - K2XX Platform

    1. 2014 - 2019 Silverado & Sierra

      General topics regarding the K2XX platform; The 2014 through 2019 Chevy Silverado and GMC Sierra. 

      615.4k
      posts

    2. 2015-2020 Suburban/Tahoe & Yukon/Yukon Denali

      General topics about Chevrolet's and GMC's full-size sport utility vehicles, the 2015-2020 Chevy Tahoe & Suburban, GMC Yukon/Yukon Denali and the Cadillac Escalade. 

      13k
      posts

    3. 2015-2019 Silverado HD & Sierra HD

      Ownership help, research, and support for the K2XX generation 2015, 2016, 2017, 2018 & 2019 Silverado HD / Sierra HD. Also known as the Silverado 2500 or 3500. 

      42.3k
      posts

  6. 1999-2013 Chevy Silverado & GMC Sierra Forums - GMT-800 & GMT-900 Platforms

    1. 1999-2013 Silverado & Sierra 1500

      A forum specifically for the 1999-2006 GMT-800 based Silverado/Sierra and it's improved 2007-2013 GMT-900 Silverado/Sierra counterparts. 


       

      138k
      posts

    2. 2000-2014 Silverado & Sierra HD

      Discussion regarding the 2000-2006 & 2007-2014 Chevrolet Silverado & GMC Sierra 2500HD/3500HD

      28.9k
      posts

  7. Chevy Colorado & GMC Canyon Forums

    1. 2023-2024 Chevy Colorado & GMC Canyon Forum

      The official forum for the all-new 2023 and 2024 Chevrolet Colorado and GMC Canyon. Tips, tricks, help, troubleshooting, advice, and resources for owners and enthusiasts. 

      84
      posts

    2. 2015-2022 Colorado & Canyon

      The official owner/enthusiast discussion/support forum for the 2015 through 2022 mid-size Chevy Colorado and GMC Canyon pickups. Research, support, technical help, service advice, sales advice, and more. Covers the 2015, 2016, 2017, 2018, 2019, 2020, 2021, & 2022 Colorado and Canyon models. 

      3.5k
      posts

    3. 2005-2012 Chevy Colorado & GMC Canyon

      General Discussion for the first generation Chevy Colorado and GMC Canyon Compact Pickup Trucks. Also includes the 2005-2010 Hummer H3 and H3T.

      434
      posts

  8. Chevrolet / GMC / Buick / Cadillac Crossover & SUV Forums

    1. 2024 Chevrolet Traverse, GMC Acadia & 2025 Buick Enclave

      A forum for owners, enthusiasts, and interested buyers of the 2024 Chevy Traverse, GMC Acadia, and future 2025 Buick Enclave. 

      3
      posts

    2. 2017-2023 Traverse, Acadia, Enclave & XT5

      General / Technical Discussion for the 2017-2023 Chevy Traverse, GMC Acadia/Acadia Denali, Buick Enclave, and Cadillac XT5. These midsize crossovers are based on GM's C1XX platform. 

       

      377
      posts

    3. 2025 Chevrolet Equinox & GMC Terrain Forum

      The official forum of the all-new 2025 Chevrolet Equinox and GMC Terrain. Research and buying advice, ownership help, technical tips, and more for Equinox and Terrain owners and enthusiasts. 

      • No posts here yet

    4. 2019 - 2024 Blazer

      Welcome back! The iconic "Blazer" nameplate returned in 2019 as a midsize crossover. Based on a variant of GM's C1XX platform. 

       

      127
      posts

  9. Classic Chevrolet & GMC Pickup Truck Forums

    1. 1988-1999 Chevrolet & GMC C/K GMT400 Platform

      Like a rock. The classic 90's pickup truck. General and technical discussion for 1988 through 1999 Chevrolet and GMC pickup trucks. Parts wanted and for sale encouraged.

      13.5k
      posts

    2. 1973-1987 Chevrolet & GMC Square Body / Rounded Line Pickups

      General and technical discussion for 1973 through 1987 Chevrolet and GMC pickup trucks. These years were otherwise known as "square body" pickups, although GM officially called them "rounded line" designs. Parts wanted and for sale encouraged.

      1.5k
      posts

    3. 1967-1972 Chevrolet & GMC Glamour / Action Line Pickups

      The transition from work transportation to personal vehicle. General and technical discussion for 1967 through 1972 Chevrolet and GMC pickup trucks. Parts wanted and for sale encouraged.

      306
      posts

    4. 1960-1966 Chevrolet C/K/Apache & GMC 1000-3000 Pickups

      The beginning of the modern age of the pickup truck. General and technical discussion for 1960 through 1966 Chevrolet and GMC pickup trucks. Parts wanted and for sale encouraged.

      111
      posts

    5. 1982-2005 Chevrolet S-10/Blazer & GMC S15/Sonoma/Jimmy

      1982-2004 Chevrolet S-10 & GMC Sonoma, 1983-2005 Blazer & Jimmy

      1.6k
      posts

    6. 1969-1994 Chevrolet K5 Blazer & GMC Fullsize Jimmy

      The smallest full-size SUV in the history of Chevrolet and GMC. The original two-door station wagon. Discussion for the classic 1969 through 1994 K5 Blazer and fullsize Jimmy.

      166
      posts

  10. Silverado, Sierra, Trucks, Parts & Accessories For Sale

    1. For Sale/Wanted

      Items/Vehicles For Sale or Wanted
      Please use caution when dealing with someone you do not know.

      55.1k
      posts

    2. Member & Vendor Rating Forum

      Dealt With A Forum Member Or Aftermarket Vendor? Tell Us About Your Experience! We All Want To Know Who To Buy From & Who To Stay Away From.
      Please Provide As Many Facts As Possible.

      697
      posts

    3. Member Product Reviews

      Share your experiences with any products here. Good or bad!
      Please follow posting guidelines.

      632
      posts

  11. The Lounge

    1. Off-Topic

      Slacked off at work today? Maybe your neighbors always piss you off? Got a funny joke or video? Let's hear about it. We're here to listen.
      Mindless ranting and random posts encouraged.

      77.7k
      posts

    2. Future Vehicle Speculation & Spy Shots

      Want to know what's next for General Motors and the Silverado/Sierra? This is our future vehicle speculation forum. Post spyshots, rumors, news articles - anything about any future General Motors product. 

      2.2k
      posts

    3. Automotive Industry & Market Discussion

      Member driven discussion on the competitive landscape that is the automotive industry. Car reviews, spyshots, competitive announcements, and anything related to the market as a whole.

      8.8k
      posts

    4. New Member Introductions

      Are you a new member? Maybe a member who's never posted anything before? It's alright! Come on in, start a new thread, and introduce yourself.

      24.8k
      posts

    5. Meetups, Events, & Gatherings

      Connect with other GM-Trucks.com members around the US or around the world.

      3.2k
      posts

    6. GM-Trucks.com Comment Box

      For questions, comments, and suggestions related to this website. Not for vehicle related help.

      2.2k
      posts

  12. Hobbies & Lifestyle

    1. Photography

      Pictures of your truck & yourself. Photoshop requests & signature pictures. Photography and cameras as an art or hobby.

      9k
      posts

    2. Major League Sports, Outdoor Recreation, Firearms, Hunting, OHRV

      For discussion of national sports teams and events -NFL, MLB, NHL, UFC, NASCAR, NBA

      Outdoor recreation, hunting, guns & firearms, Camping, and ATV/UTV/Snowmobile Riding. 

      8.7k
      posts

    3. Racing, Strip, & Track

      Track talk, racing strategies, super-performance parts, and techniques.

      1.5k
      posts

    4. Trailers, Hitches, & Towing

      From towing a horse trailer with an HD to a jet ski with an S-10. Discuss proper technique, wiring, electronic trailer brakes, or anything relevant to towing a trailer.
      8.4k
      posts

    5. Garage & Home, Snow Plowing, Landscaping, & Lawn Care

      A forum dedicated to all things Garage and Home. Tools, organization, accessories and things to make our lives easier outside our vehicle. In the Winter, discussions related to plowing such as ice management, plow brands, spreaders, and operating a plowing business. In the Summer, keeping your lawn looking great and/or running a landscaping business.

      3.4k
      posts

    6. Technology, Devices, & Gaming

      Computer and technology related discussion. Includes smart phones, computers, electronics, software, games, and other non-automotive tech.

      2.5k
      posts

    7. Vehicle Buying, Financing, Incentives, & GM Card

      Discussion around dealership experiences, vehicle shopping and buying, financing, incentives and questions about using the GM Card

      4k
      posts

    8. Vehicle Builds

      The transformation of a vehicle from mild to wild. Share your own story - modification by modification. One vehicle per thread - one thread per vehicle.

      20.3k
      posts

  13. Technical & Advanced

    1. Vehicle Appearance, Care, & Maintenance

      Help for the do-it-yourself vehicle owner. Suggestions on how to make your truck look better & last longer.

      19.2k
      posts

    2. Ask the GM Technician

      Have a hard question?
      Only Questions That You Would Go To The Dealer For, Please!

      29.3k
      posts

    3. Performance Engine Tuning

      A forum dedicated to intensive and experienced engine and computer modification topics.

      3.9k
      posts

    4. Transmission, Suspension, Transfer Case, & Axles

      For all transmission and drive-line related topics. Included but not limited to 2WD, 4WD, AWD, transfer cases, & lift/lowering kits.

      12.2k
      posts

    5. Wheels, Tires, & TPMS

      Anything related to rims, tires, tire pressure monitor sensors, fixing a flat, and general tire maintenance here.

      16.1k
      posts

    6. Audio, Electronics, OnStar, MyLink, Intellilink & SiriusXM

      Infotainment, Mylink, Intellilink, SiriusXM, Bluetooth, Navigation Systems, OnStar, RemoteLink, smartphone connectivity, & aftermarket audio. Also includes Android Auto and Apple CarPlay.

      12.3k
      posts

    7. How-To

      Installations, Maintenance, and Repairs.

      2k
      posts

  14. Commercial Vehicles

    1. 1980-2009 Chevrolet Kodiak and GMC Topkick

      Discussion for the medium-duty commercial Kodiak and Topkick.

      198
      posts

    2. Chevrolet Express & GMC Savana

      All topics related to Chevrolet and GMC's popular full-size van line.

      382
      posts

    3. Chevrolet Silverado Chassis Cab 4500HD/5500HD/6500HD

      Discussion for the medium-duty chassis cab class 4/5 Silverado trucks. 

      83
      posts


  • Posts

    • richard wysong
      2013 Transmission / Engine Temperature Issues, possible wiring problem? Something else?

      By richard wysong · Posted

      You will need a scan tool that does live data so that you can see the temp outputs to the PCM to begin the diagnosis.
    • TTA1326
      Trans Fluid Flush

      By TTA1326 · Posted

      I want to change the trans filter and flush the fluid in my 61K 2018 Silverado 5.3L 6 speed.  I don't want to warm the trans up for this.  I also have the Superior Solutions STL010 Cooler Bypass to install.  So, if I understand this correctly I can install STL010 first, then partially flush the fluid (cold) until the flow starts to diminish, cut if off, change the filter, fill the fluid up, and then finish the flush until the fluid looks clean.  Is that correct?   Alex    
    • Epsilon Plus
      ZR2/AT4X Part Numbers & Conversion Info

      By Epsilon Plus · Posted

      Relevant torque specs:   Front Lower Control Arm Ball Stud Nut: First Pass 37 lb ft, Final Pass 90 -100 degrees    Front Lower Control Arm Nut [2x] First Pass 133 lb ft, Final Pass 45 -75 degrees   Front Lower Control Arm Bolt [2x] is torque to yield (single use) part number:  11549229   Front Shock Absorber Nut (top) [2x]: 48 lb ft   Front Shock Absorber Bolt: 118 lb ft   Front Stabilizer Shaft Bolt [4x]: 37 lb ft   Front Stabilizer Shaft Link (end links) Nut [2x]: 74 lb ft   Torsion Bar Support Bolt [2x]: 92 lb ft   Front Upper Control Arm Nut [2x]: 192 lb ft   Front Upper Control Arm Ball Stud Nut:  First Pass: 37 lb ft, Final Pass: 90–110 degrees   Front Wheel Hub Bolt [4x]: 133 lb ft   Front Wheel Hub Extension Nut [8x] 96 lb ft   Front Wheel Drive Shaft Nut: First Pass: 244 lb ft, Second Pass: Loosen 45 degrees, Final Pass: 199 lb ft   Front Wheel Drive Shaft Nut is torque to yield (single use) part number: 11612295   Front Differential Carrier Bolt (Go from the top down on driver side): 81 lb ft   Front Differential Carrier Bracket Bolt [4x] (bolts that go from the bottom up on both sides through the large bracket openings): 118 lb ft   Front Differential Carrier Bracket Nut [2x] (bottom up, pass side): 74 lb ft   Front Differential Carrier Bolt[2x] (smaller bolts, bottom up driver side): 81 lb ft   Rear Spring Unit Bolt Nut[4x]: First Pass: 74 lb ft, Second Pass: Loosen 270degrees, Third Pass: 74 lb ft, Final Pass: 175 - 185degrees   Rear Shock Absorber Bolt -Upper: 70 lb ft   Rear Shock Absorber Bolt -Lower: 118 lb ft  
    • Epsilon Plus
      ZR2/AT4X Part Numbers & Conversion Info

      By Epsilon Plus · Posted

      I wish I could edit the original post as planned, but apparently that option times out. That said, here is some relative follow-up information from the larger discovery thread. This thread can serve as more of an up to date quick reference without digging through the minutia.   - This conversion works on both gas and diesel and has been successfully completed using all factory 2024 ZR2 parts on 20-23 trucks. GMC owners should substitute verbiage where necessary. X31 = Z71 and AT4X = ZR2 and AEV Edition = Bison. The swap mules on this site were Silverado but all of this will work with Sierra.   - At this time DSSV front shock usage will require modifying the hard and possibly soft brake lines on 20-23 trucks to accommodate the very large shock bodies of the DSSV. 2024+ non-ZR2s may not have this issue but no confirmations at this time. The preferred shock usage with this conversion is Bilstein B8 5100s as the standard versions of them allow for stock to 2" extra lift and are a perfect size fit for this 1.5" factory lift. Alternative to DSSVs if you want something in that quality/performance range try King remote reservoir shocks. At least they are rebuildable compared to DSSV and are of similar price range and arguably superior quality.   -85637479 is the confirmed front one piece ZR2 skid plate that replaces the plastic steering guard of all 4x4 trucks and the metal front diff skid of Z71 trucks. No extra bolts are required unless going from a non-Z71. The skid plate will be necessary to purchase when doing the full conversion as it allows room for the 1.5" differential drop. The stock Z71 skid will hit the diff if re-used. Non-Z71 trucks will have the bolt holes drilled and tapped already there waiting for the skid.   -The ZR2 transfer case skid is a partial direct fit. It will use (2) of the (3) bolts of the Z71 shield. If you are going from a regular 4x4 (non-Z71), you will need (2) 11518341 bolts (M10X1.5X25). The crossmember for the front skid holes will be drilled and tapped waiting for the skid. The rear of the skid will line up with the rear crossmember but you will need to drill and tap for (2) more of the same bolts, or alternatively like I did, drill through and use a through-bolt/nut/washer combo. I used a 3/8 stainless bolt with double washer and a lock nut. 2024+s may have the rear crossmember drilled/tapped for the ZR2 skid but need confirmation.   -The only item not reused on the swap is (1) of the (2) small 10mm bolts that help hold the brake hose bracket on the knuckle for each side. This sounds critical but the bracket holds on to the knuckle just fine in the stock divots and using the singular 10mm bolt. You can ziptie or figure out a way to secure the un-used top hole but the ZR2 knuckle is not drilled and tapped for it's usage in that spot. Use Loctite blue (low strength for future removal)  on the singular 10mm bolt if worried.   -There is two un-used bolt holes drilled and tapped on the UCA. These are for the routing of the 2024 brake lines that allow room for the DSSV. If you are converting a 2024+ over to ZR2 suspension, you may end up using these with your stock stuff and the above brake bracket bolt usage bullet point may not apply.   -ZR2s run LT305/70R18 (34.8x12R18) stock. Numerous ZR2 owners have converted over to 37s without trouble. This will largely depend on your wheel offset. Using a GM 18x8 with admittedly unknown offset, I am running Nitto 37x12.5s (36.5 actual height) with very limited rub on the front wheel liner. I've trimmed a small lower section of the liner and no longer have rub there. I have a touch of rub on the sway or frame at full articulation and turn lock but nothing audible, dangerous, or impactful long term. Those with custom wheel offsets that push the wheel out a touch should have no issues. Right now I'm sitting at 43 5/8" from ground to bottom of upper fender lip and about 44.5 in the rear using the full front/rear swap. I have not dialed it in all the way yet with the keys...etc until after I add the steering stabilizer (good idea when using 37s).   -Someone asked about using the e-Locker. This is likely a cost ineffective or impossible swap considering it is most likely tied into the BCM, ECM, and various other 4x4 modules. Just be happy with the good 'ol G80 that comes standard on all HDs. As far as fitting a unit in and somehow actuating it with something like a factory Aux switch? Well....get to experimenting.   I'll try to add more info as I learn it.
    • ManyCamaroz
      I'm so confused....I don't want to let my beloved gasser go....

      By ManyCamaroz · Posted

      An old timer told me once that that the GVWR is determined by how much it can handle safely (stop), and not determined what it can pull. 

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