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Expert Answers about GMC Sierra 2500


  • Parts Needed to Convert from Electric Brakes to Electric Over Hydraulic Disc Brakes
  • To convert your trailer from electric drum brakes to electric over hydraulic disc brakes we can start with the disc brake kit. Since you have 7,000 lb axles a great option is the Kodiak Disc Brake Kit # K2HR712D (one per axle) along with Bearing Kit # BK3-200. To ensure this kit is going to work you will need to ensure you have a 5-bolt brake mounting flange and what hubs you currently have. You will need to take apart your current hub assembly and look at the bearings themselves; wipe...
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  • Pivot Arm Setting For B&W Companion Hitch
  • The B&W # BWRVK3710 hitch base has two options for horizontal location of the pivot arms. Since you do not have an 8-foot bed, I would choose the option that places the king pin closer to the rear bumper. This still won't allow a 90-degree turn, but it will give you a bit more room to navigate.
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  • Can Removing Heat Shield Under Truck During Gooseneck Hitch Installation Harm the Truck
  • Actually, the structure of the B&W # BWGNRK1016 Turnover Ball gooseneck hitch protects the underside of the bed much better than the heat shield could. The hitch is much thicker and heavier than the heat shield was, so there'll be no worries about heat damage. If you take a look at the instructions which I've linked for you, B&W mentions that the heat shield must be removed. To install a 7-way trailer connector in the truck bed, I'd recommend part # C56000. If you click the provided link,...
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  • Should the Rails of Curt R20 Slider Be Greased During Maintenance
  • Yes. Greasing the rails of the Curt A20 5th Wheel Trailer Hitch w/ R20 Slider - Dual Jaw - 20,000 lbs # C16541 should be done as a part of your regular maintenance routine; this will keep the hitch sliding freely. For the # C16541 A20 5th Wheel Hitch, Curt recommends using a quality white lithium grease like # L11354 for the 14 oz. Curt recommends applying a thin layer of grease of the rails that the roller rides against before each trip, and running the hitch fore and aft several times...
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  • Brophy Clamp On Camper Tie-Down Placement
  • The Brophy Clamp On Camper Tie-Downs - Bed Mount - Black Powder Coated Steel - Qty 4 Item # HSAB mount to the bed rail instead so you won't have any space issues with the running boards of your truck.
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  • How do I Flat Tow My 2017 GMC Sierra 2500 behind my RV?
  • To flat tow your 2017 GMC Sierra 2500 with 4WD behind an RV, you will need a base plate kit, a tow bar, safety cables, a lighting solution, a supplemental braking system, and most likely a high-low adapter. Here are the parts you will need: Base Plate Kit: Roadmaster Direct-Connect Base Plate Kit - Fixed Arms item # RM-3180-2 Tow Bar: Roadmaster Nighthawk All Terrain, Non-Binding Tow Bar # RM-676 Safety Chains: RoadMaster 68" Single Hook, Coiled Safety Cables # RM-643 Wiring Kit: Roadmaster...
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  • Torque Spec Rating for Curt Rota-Flex Skit Plate Bolts
  • Oh wow, that's definitely not a good experience but I'm glad you made it home safely! The bolts that hold the rotating skid plate to the Rota-Flex pin box, like part # LC328329, are definitely Grade 5 bolts and although I'm unsure which exact size they are, Curt/Lippert does give us a torque spec guide in the Rota-Flex instructions so you just have to confirm the size of the bolt and make sure the torque spec matches: 1/2"-13 is 65 ft-lbs 5/8"-11 is 135 ft-lbs 3/4"-10 is 220 ft-lbs Please...
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  • Do You Have to Unscrew the iN-Command TPMS Sensors To Inflate Your TIres?
  • Yes, since iN-Command TPMS for RVs, Trailers, and Vehicles # NCTP100 are not flow-through sensors you're going to have to unscrew them to inflate your tires.
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  • Does the Curt Hitch C14009 Not Attaching to Truck's Bumper Affect Strength of Hitch/Bumper
  • I spoke with my contact at Curt about this and here was his response: All of our hitches are tested to SAE J684 standards. Hitch # C14009 is not an OEM style hitch, thus it does not use the truck bumper for support. The OEM hitch uses the bumper to support the hitch. The hitch does not support the bumper.
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  • Can I Use Gen-Y Gooseneck Couplers in the Reverse Orientation?
  • I contacted Gen-Y, and they stated that using their gooseneck couplers, like the Spartan # 325-GH-7072 you were looking at, in the reverse direction with the coupler tube facing the cab of the truck instead of the tailgate is not recommended. They did say that using it this way could be possible and would not void the warranty on the coupler, but there could be issues with your weight distribution with more weight being placed in front of the rear axle. I cannot recommend going against...
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  • Can UWS Truck Bed Toolbox Open on 2016 GMC Sierra 2500 With Tonneau Cover
  • A truck toolbox such as the UWS Truck Bed Toolbox - 5th Wheel Series Chest # UWS01066 will allow the lid to open somewhat, but not entirely if you have a tonneau cover like the TruXedo Pro X15 Soft Tonneau Cover - Roll Up # TX1472001 on your 2016 GMC Sierra 2500.
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  • How Easy is it to Remove Demco Hijacker Autosliding Fifth Wheel Trailer Hitch from Truck
  • The Demco Hijacker Autoslide Fifth Wheel Trailer Hitch # DM8550034 installs onto industry standard rails. The only issue with removing the hitch from your truck is that it's heavy. The head itself is approximately 40 pounds and base is around 200 pounds. So the issue with removal is strictly weight. To install the Hijacker in your 2016 GMC 2500 you can use the Installation Kit # DM8552011-71. Also, if you'd like to install a 7-way connector inside the bed of your truck to make it easier...
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  • Can The TruXedo Pro X15 Soft Tonneau Cover Be Latched Closed While The Tailgate Is Closed
  • You would need to lock the TruXedo Pro X15 Soft Tonneau Cover # TX1472001 in place before closing the tailgate of your 2016 GMC Sierra 2500. You won't be able to get the cover to latch in place with the tailgate closed, which also adds a bit of security because no one will be able to open the cover if you lock the tailgate.
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  • Installation Of The Lippert Ground Control 3.0 Jack Leg Mounting Brackets
  • The mounting brackets for the rear legs of the Lippert Ground Control 3.0 Electric 5th Wheel RV Leveling System w Touchpad and Remote # LC675817 are designed for I-Beam frames but I had mentioned before that others will a box frame have had the system welded to the frame in order to make it work. A proper weld will be stronger than the standard hardware that's included with the kit. Installation this way would require a bit of work by a fabricator to ensure proper fitment since the mounting...
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  • How to Add Aftermarket Brake Controller to 2015 GMC Sierra 2500 With Factory Brake Controller
  • The first thing you will need to do is take your 2015 Sierra 2500 to the dealer and have the computer flashed to disable the factory brake controller. Doing this will remove the risk of the check engine light or other messages displaying on the dash. After this is done, you can install a brake controller like the Redarc Tow-Pro Liberty # RED24FR you looked at using the # 331-TPH-010. Once you plug the controller into the factory port you will be ready to go.
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  • Can the Progressive Dynamics Pure Sine Wave Inverter Be Used with Transfer Switch Already on Trailer
  • Yes, you can use the Progressive Dynamics Pure Sine Wave Inverter part # PD64FR with an external transfer switch. In order to do this you'd just use the inverter output to another switch and not involve the inverters 120 volt input side. This would bypass the internal transfer switch. I confirmed this with my contact at Progressive Dyanmics for you.
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  • Installation Assistance Needed Roadmaster Rear Anti-Sway Bar
  • I contacted Tech Support at Roadmaster to verify fitment, they confirmed that the Roadmaster Rear Anti-Sway Bar, # RM25FR, 1109-101, is the correct item for your 2021 GMC Sierra 2500HD. They also confirmed that proper installation does use a 3-1/2" bolt, specifically an M12x1.75-90mm. Unfortunately we do not have an installation video created for this product.
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  • Oil Bath Trailer Hub for Dexter 6k Axle
  • For a 6k Dexter hub that's oil-bath we have the Dexter Trailer Hub and Drum Assembly for 5,200-lb to 7,000-lb Axles # 8-219-9UC3 which comes with bearings, seal, and the correct see-through cap that's needed. It also comes with lug nuts. For oil you could also use the part # XLPROLUBE.
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  • Air Bag Inflation Instructions On Trailair Pin Boxes With 18,000 lb Capacity
  • There are a couple different Trailair pin boxes for the 18,000 lb capacity. There is the Flex Air like # LC328492 and the Air Ride like # LC179879. With either model, the air bag should be inflated until the outer cylinder of the shock rises high enough to fully expose the yellow inflation indicator sticker that you can see in its entirety on part # LC177223. There is not a listed max psi.
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  • How Long Does the Everchill Refrigerator for RVs Part # 324-000119 Take to Get Cold
  • I spoke to my contact at Way Interglobal (EverChill) about the Everchill Refrigerator for RVs part # 324-000119 and they informed me that while empty and on the max temperature setting, the refrigerator will take about 45 - 60 minutes to reach the set temperature.
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