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Expert Answers about GMC Sierra 3500


  • Will The Demco Rail Adapter DM6333 Installed On A 2020 GMC 3500HD Make Contact With The Bed Floor
  • I spoke with Demco and they said 5th Wheel Rail Adapter # DM6333 not making contact with the truck bed is completely normal. In the trucks with the puck systems, the design by the manufacturers is for the puck system to carry the pin weight. This is due to the framework under the bed being much stronger than the actual bed floor. So with all that being said, the Demco brackets are designed not to sit on the bed floor.
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  • What Does Load Indicator of Gen-Y Pegasus Shock Absorbing Gooseneck Coupler Look Like
  • I attached a picture that shows where the load indicator is on the Gen-Y Pegasus Shock Absorbing Gooseneck Coupler # 325-GH-7067 for you to check out. The highest arrow on the scale indicates your maximum vertical load (5,500 lbs). The lowest arrow indicates no vertical load (0 lbs). A vertical load of at least 4,000 lbs is recommended for the built-in shock absorption to function effectively. This means that the scale's white indicator marker should be between the highest arrow and the...
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  • Can Pace Edwards Beclocker Rails Be Cut Shorter to Fit 2021 GMC Sierra 3500 With Toolbox
  • I reached out to Pace Edwards and found that it is possible to cut the rails shorter on the Pace Edwards Bedlocker Retractable Hard Tonneau Cover - Electric - Aluminum - Black # PE44CV. This would allow the cover to fit along with your toolbox on your 2021 GMC Sierra 3500. The one thing to keep in mind should you choose to do this is that the warranty will no longer be valid if you cut the rails.
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  • Installing GCH Truck Bed Cargo Camera # 3460010 on 2018 GMC Sierra 3500
  • The third cable you mentioned for the Truck Bed Cargo Camera # 3460010 will indeed plug in between the camera and module cables also included with the kit. The red and black leads are for the camera's power and ground. The module also includes extended leads for power and ground. I have labeled the picture you attached accordingly. The ground leads (black) from the module and camera need to be attached to a bare metal surface using ring terminals like # DW05705-1 and a screw. The...
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  • Adjustable Aluminum Ball Mount for 2-1/2 Inch Trailer Hitch
  • All the Rapid Hitch ball mounts we carry, like part # AM3461, are for 2 inch hitch receivers but we do have similar products. I recommend the Weigh Safe 180, part # LTB4-25. It does fit a 2-1/2 inch receiver and stil gives you 4 inches of drop or 5 inches of rise. The Weigh Safe doesn't have the greaseless hitch balls like the Rapid Hitch but they are stainless steel.
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  • Should Gooseneck Hitch on 2020 GMC Sierra 3500 Be Moved to Account for Andersen Ultimate Offset
  • When installing a gooseneck hitch on your 2020 GMC Sierra 3500 long bed, such as the B&W Turnoverball # BWGNRK1020 (which would be an excellent choice), you will want to position the hitch ball as stated in the installation manual. You should not adjust this location based on the type of adapter or hitch you plan on using, even with those like the Andersen Ultimate that feature an offset so that the actual connection point with the trailer will differ from the gooseneck ball location in...
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  • Why Is Drilling Required for the Air Lift 7500 Airbags On a 2018 GMC Sierra 3500 With 5th Wheel
  • There are two ways to install the Air Lift LoadLifter 7500 XL Air Helper Springs part # AL57538 on your 2018 GMC Sierra 3500, using the included u-bolts or drilling the brackets directly to the underside of the frame. The u-bolts would be used for when there are no in-bed hitch brackets that attach to the side of the frame but if you do have these then the u-bolts won't work because of where the in-bed hitch brackets mount therefore you will have to drill into the underside of the frame...
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  • Can 5th Wheel Hitch in 2022 GMC Sierra 3500 Be Installed to Rear of Rear Truck Axle
  • The OEM trailering Puck package in the bed of your 2022 GMC Sierra 3500 would dictate where the # BWRVK3715 B&W Companion 5th wheel hitch would install. A fifth wheel hitch would install either in front or atop the rear truck axle, not behind it. If the hitch is placed so that the pin weight of the 5th wheel is applied to the truck to the rear of the axle, it would apply leverage to the truck frame which would raise the front end of the truck to a degree. This reduces the amount of downward...
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  • Does Heat Shield on 2016 GMC Sierra 3500HD have to be Removed to Install B&W Gooseneck Trailer Hitch
  • The heat shield does have to be removed to install B&W gooseneck trailer hitch # BWGNRK1016 on your 2016 GMC Sierra 3500 because it is in a position that interferes with the hitch installation. All of the gooseneck hitches for your truck will either need to have the heat shield removed or trimmed for installation.
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  • How to Find Best Height Setting for B&W Companion on 2023 GMC Sierra 3500 with OEM Puck System
  • Thank you for the info! Since the difference between your 2023 GMC Sierra 3500 truck bed and 5th wheel pin box is right at 11" you're going to need to put the B&W Companion # BWRVK3710 into the lowest height setting at 16-3/4". With that being said, there are a few other things to note as well. You need to make sure you have adequate clearance for the nose of your 5th wheel RV above the bed sides of your pickup (recommended is 5" - 6") and you also want to make sure that your 5th wheel...
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  • Will Edge Pulsar V3 L5P Inline Tuner with Insight CTS3 Monitor Override Governor on GMC Pickup
  • Yes, one of the functions of the Edge Pulsar V3 L5P Inline Tuner with Insight CTS3 Monitor # EP54KR is to adjust the governor limit on your 2022 GMC Sierra 3500 6.6L V8 Diesel.
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  • How to Turn Off the Guidance Lines on the Custom Third Brake Light Camera
  • I contacted the manufacturer about the wires and turning off the guidance lines on the Custom Third Brake Light Camera for 8" Factory Monitor # 3460010. What they said was to go to the camera and the main cable coming off of it has 2 sets of small wires. Green and white. Locate the green wires, they should be separated. Strip back a small amount of plastic from each green wire and twist the tips together. Then cover the exposed edge. Go to the camera power and disconnect it for about 5...
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  • What is Lowest Hitch Height for B&W Companion in 2018 GMC Sierra 3500 With Factory Prep Package
  • The 16-3/4 inch hitch height is the lowest the B&W Companion 5th Wheel Hitch # BWRVK3700 will go in your 2018 GMC Sierra 3500 with the factory prep package. The Companion is a great hitch but there are other high-quality fifth wheel options if you need one with a lower height setting; for that I strongly recommend the Reese M5 5th Wheel Trailer Hitch # RP30890 which has hitch height settings that are adjustable from between 14 inches and 20 inches. The M5 # RP30890 will also fit directly...
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  • Furrion Monitor Turns Off
  • Thank you for your purchase from etrailer of the Furrion Vision S Wireless RV Backup Camera System w/ Night Vision - Rear Mount - 5" Screen # FOS05TASF. It is normal that the screen turns off automatically; you can change this setting at the LCD Auto Off option on the monitor. I have added a link below to the instructions, and if you click on them and go to page 22 it explains how to do this.
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  • Recommended Height For Item # C97FR In A 2021 GMC Sierra 3500
  • I wouldn't say there is actually a formula for setting the height for the Curt Q25 Item # C97FR on a 2021 GMC Sierra 3500 . It is recommended that the bottom edge of the nose on your 5th wheel is 6 inches above the bed rails. I typically set the hitch height in the middle initially. This seems to be the standard height of most campers. Once height is set, hook the camper up and check the distance between the bed rails and the bottom edge of the nose. If you have close to 6" you are good...
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  • Will The B&W Companion Rub Against Tailgate On A 2022 GMC Sierra 3500 Regular Bed
  • The B&W Companion OEM 5th Wheel Hitch # BWRVK3775 has three different horizontal positions, so you will be able to adjust it accordingly so you do not have any issues with your GD Reflection 337RLS. This hitch is confirmed to fit your 2022 GMC Sierra 3500 regular bed, and has a maximum towing capacity of 20,000-lbs which is more than enough for your Grand Design Reflection 337RLS.
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  • Are SumoSprings Recommended for 2020 GMC Sierra 3500 That Squats With 5th Wheel Hooked Up
  • I highly recommend using the SumoSprings suspension enhancement on your 2020 GMC Sierra 3500 Denali if your truck is squatting that much. The correct kit for your truck is: - SumoSprings Rebel Custom Helper Springs # SSR-203-40-2 The reason you want to use these springs is because when you have additional capacity in the bed of your truck and you start to sag, the front of the truck will also rise. When that happens, your Sierra won't handle as well as it should because the front tires...
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  • Is Threadlocker Needed When Installing TorkLift Superwinch Trailer Hitch Receiver
  • Loctite Threadlocker 243, like part # LT1330799 creates a strong bond that can still be removed with hand tools. It isn't required by the manufacturer for installing a hitch like the TorkLift SuperHitch Original Trailer Hitch Receiver, part # TLC1212. If torqued properly per the installation instructions, the hitch should be just fine.
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  • Why is 2 x 4 Lumber Included in Parts List for SumoSprings Custom Helper Springs # SSR-207-47
  • You ask a good question. Indeed, a "short length of 2 x 4" is listed in the installation instructions as one of the tools needed to install the SumoSprings Custom Helper Springs # SSR-207-47, yet this item is not referred to in any of the installation steps. My technical contact at SumoSprings advised that the 2 x 4 is recommended to help get their springs fully seated in the cups that held the factory bump stops. The idea is to place one end on the top of the axle and the other against...
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  • Mounting a Industry-Standard Rail Compatible 5th Wheel Hitch into OEM Pucks in 2017 GMC Sierra 3500
  • In order to install a fifth wheel hitch that's compatible with industry-standard bed mounting rails like your Reese 16K hitch, you'll want to use the Demco # DM6333 that you'd looked at. The adapter drops into the in-bed pucks and latch into place, providing industry standard rails to mount your hitch. I've linked to a product description video featuring the adpater.
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