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Expert Answers about GMC Sierra 2500


  • Will the Westin R5 Nerf Bars Fit a 2019 GMC Sierra 2500 Crew Cab with 6.6L V8 Duramax Engine
  • Yes, the Westin R5 Nerf Bars part # 28-51035 are a confirmed fit for your 2019 GMC Sierra 2500 Crew Cab with the 6.6L V8 Duramax Diesel Engine. I checked with Westin to confirm. There won't be any issue with diesel specific components such as the DEF tank. I have attached an install photo on the chrome finish for you.
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  • Are the Gooseneck Hitch Balls the Same for a GM and Ram Puck System
  • Yes, the pop-in style gooseneck trailer hitch balls are cross compatible between the different factory puck systems from Ford, Ram, GM, and Nissan. For this, we have a few options such as the Curt Pop-In Ball part # C60629 which has a rise built-in or the Curt Pop-In Ball part # C60601 which does not.
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  • Can the Redline Weatherstrip Tape Be Used To Help Seal Off a Door
  • The Redline Weatherstrip Tape part # WS1412 is a universal product that can be used to seal off a door, yes. There are really not any fit tips for this but we also have a wider option if needed, the Redline Weatherstrip Tape part # WS1434 which would offer more coverage and a better seal in certain application. If you are looking to seal the hinge itself then you might opt for some silicone sealant, the TremPro 644 Silicone Sealant part # 0160297.
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  • Recommended Sidewinder Wedge Kit For A B&W Companion OEM
  • The Sidewinder Wedge Kit # RP74FR is more of a generic fitting option whereas the # SWW-06 is shaped more to fit the funnel of a B&W Companion # BWRVK3710. Both will work but the # SWW-06 will spread the pressure more evenly across the funnel of the hitch.
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  • Does Gen-Y 14 Inch Hitch Extender Reduce Total Weight Capacity of Trailer Hitch
  • So for your GMC Sierra 2500, I was unable to find exactly what the hitch itself was rated for; I'm seeing different numbers all over the place, but I can still answer your questions regarding a hitch extender. Any adapter/extender will reduce the entire capacity and all ratings of the hitch, including the Gen-Y Hitch Hitch Extender for 2" Trailer Hitches - 14" Long # GY89SR. If you use the # GY89SR your capacities will be limited to whichever is lower - half of your hitch capacities or...
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  • Will The Curt CrossWing Lightweight Gooseneck-to-5th-Wheel Trailer Hitch Fit New GM Puck System?
  • We have installed the Curt CrossWing Lightweight Gooseneck-to-5th-Wheel Trailer Hitch Adapter # C32DR on a 2022 GMC Sierra 2500 which has the new style GM puck system. Do understand that while we didn't notice any issues when connected to a 5th wheel at our shop there are several different size 5th wheel pin boxes which would allow it to use on one but not the other. This hitch will give you a 9" offset if you want to see how that compares with your new 5th wheels pin box. Personally...
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  • Leer Latitude Soft Tonneau Cover Compatibility With A Fifth Wheel Hitch In A 2017 GMC Sierra 2500
  • The Leer Latitude Soft Tonneau Cover - Folding - Vinyl and Aluminum # LE38FR is going to sit on top of your bedrails so as long as your fifth wheel hitch sits below the bedrails you will have no issues rolling this cover down to protect your hitch from the elements. This cover folds flat and secures with buckles for 2/3 truck bed access so you will be able to tow without removing the cover.
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  • Will Husky Liners Wheel Well Guards Fit With 5th Wheel Hitch Installed?
  • I contacted the vendor regarding the Husky Liners Custom Rear Wheel Well Guards # HL79031. This will fit your 2016 GMC Sierra 2500HD nicely as long as it doesn't have a bracket on the side of the frame in the wheel well area (see photo of a setup that has this bracket). If you do have a 5th wheel bracket on the side of the frame then you can technically still use this liner, but you will likely need to cut/notch out a section of the wheel well liner. I attached a short demonstration video...
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  • Will the Westin R5 Nerf Bars Fit a 2015 GMC Sierra 2500HD Duramax
  • Yes, the Westin R5 Nerf Bars part # 28-51020 are a confirmed fit for your 2015 GMC Sierra 2500HD with the 6.6L V8 Duramax Engine. I called my contact at Westin to confirm this for you as well. There will be no interference with the DEF reservoir/tank on the passenger side.
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  • What Trucks Does Curt 2-1/2 Inch Hitch Cap Sensor C36UR Works With
  • Yes, your GMC Sierra 2500 Denali with a 2-1/2 inch receiver will work with the hitch sensor from Curt: - 2-1/2" Hitch Cap Sensor for GMC Sierra MultiPro and Chevy Silverado Multi-Flex Tailgates # C36UR This sensor is designed to work with 2019+ GMC Sierras and 2021+ Chevy Silverado trucks, regardless of model, that have the MultiPro or Multi-Flex tailgates. Since you have the 2-1/2 inch hitch on your truck, this is exactly what you'll need. This is a pretty ingenious product too, because...
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  • Determining If Dexstar Steel Modular Wheel AM20363 Will Fit 1999 Airstream Safari 25
  • It is very possible that the Dexstar Steel Mini Mod Trailer Wheel - 14" x 5-1/2" Rim # AM20363 with the 5 on 4-1/2" bolt pattern will fit on your 1999 Airstream Safari 25 as it is the most popular bolt pattern, but you will want to measure your current wheels following the instructions found in the included help article to be sure. If you do have the same bolt pattern the 5 on 4-1/2" bolt pattern # AM20363 are a great choice. If you find you have a different bolt pattern just let me know. If...
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  • Parts Needed to Remove Movement/Noise of Weight Distribution Shank in Hitch
  • Hitch rattle/noise is pretty annoying. We have products like the Hitch Immobilizer part # BX88225 which you can use to eliminate all of that noise. This uses a couple U-bolts to pull the shank of the ball mount tight against the hitch tube to get rid of the movement. This specific model fits 2-1/2 inch hitch sizes like you have as well.
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  • Is 21,000 lb Trailair Flex Air Pin Box Compatible With Curt Q20 Sliding 5th Wheel Hitch
  • Definitely a good idea to make sure a purchase like this will work without issue, and I can tell you that your sliding Curt Q20 5th wheel hitch is 100 percent compatible with the 21,000 lb Trailair Flex Air 5th Wheel Pin Box # LC369535. The only pin box the Q20 is not compatible with is a rotating pin box like a Sidewinder, but the Flex Air isn't rotating, it is just a cushioned pin box, so it will work wonderfully with your Q20 and you'll get a much smoother, much more comfortable ride...
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  • Recommended Fixed 5th Wheel Hitch For A 2022 GMC Sierra 2500 With A Short Bed
  • The best 5th wheel hitch for your 2022 GMC Sierra 2500 with the short/standard bed will depend on if you have the factory pucks in the bed or not. If you don't, the Reese M5 5th Wheel Trailer Hitch - Single Jaw - 20,000 lbs # RP30928 and Rail Kit # RP30035-522 would be a great option. Now if you do have the factory pucks in your bed, I highly recommend the B&W Companion OEM 5th Wheel Hitch # BWRVK3715. This is American made and also rated up to 25,000 pounds. This will also secure into...
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  • Will Curt Class V Trailer hitch C15860 Fit a 2016 GMC Sierra 2500HD
  • I checked with Curt and hitch # C15860 is listed in their application guide as a fit for your 2016 GMC Sierra 2500. The application guide is not the same as the fit guide. The application guide is more up to date and updated frequently. The fit guide on the other hand takes some time to catch up. I have linked a video showing an example installation of this hitch for you. The recommended ball mount for this hitch is # C45456. It takes a ball with a 1-1/4 inch diameter shank such as # 63840.
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  • Can B and W Companion Slider Hitch BWRVK3500 Be Used with 2018 GMC Sierra 2500
  • Yes you can use the B and W Companion slider hitch part # BWRVK3500-5W in the bed of your 2018 GMC Sierra 2500 as long as you install a Turnoverball hitch part # BWGNRK1016 in the truck bed as well.
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  • Does Curt Weight Distribution Shank C17132 Fit Husky Weight Distribution System
  • If you have a 2-1/2 inch hitch and you need more drop the Curt shank part # C17132 is a great option that is perfectly compatible with your Husky system.
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  • 7-Way Socket for 2020 GMC Sierra with Gooseneck Bed Wiring for 7-Way Ran
  • Since you already have 7-way wiring ran near your truck bed you could install the Pollak 7-way part # PK12-707E in the bed and then run the wiring you mentioned directly to it and you'd be set.
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  • Which Goose Box for a 2022 Grand Design Reflection 31MB?
  • I just spoke with Lippert and your 2022 Grand Design Reflection 31MB has a 1621 pin box. You will need the Reese Goose Box item # RP85FR you were looking at. This Goose Box has a 20,000 lbs capacity which will be more than enough for your Reflection. The Reese Goose Box is endorsed by Lippert Components Inc. and will not affect the warranty on their trailer frames. I have linked an installation video below. You will also want to get the Tow Ready Safety Chain Kit with Clevis Hooks -...
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  • Manual Replacement Towing Mirrors for a 2014 GMC Sierra 2500
  • K-Source custom fit towing mirrors # KS62077-78G fit in the same footprint and same mounting pattern as the stock side mirrors so if the aftermarket towing mirrors you have now install the same way then there won't be a problem. If the mirrors you have now required modifications to the truck that changed the stock mounting pattern or footprint where they attach to the door then none of the replacement mirrors that we have will fit.
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