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Expert Answers about GMC Sierra 2500


  • Under Bed Install Kit for Reese on 2016 GMC Sierra 2500 with 6-1/2 Foot Bed
  • The Reese M5 Fifth Wheel Hitch # RP30921 installs into your 2016 GMC Sierra 2500 using # RP30868. Since you have a 6-1/2 foot bed you may need a sliding hitch for turning clearance. Unfortunately, the Reese M5 cannot be converted to a slider so you would need an entirely new hitch, # RP30144. You may not need the sliding hitch. Especially if your trailer has a Sidewinder or Revolution pin box. If it doesn't already you may be able to replace the pin box with a Sidewinder. If you tell...
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  • 5th Wheel Hitch That Fits A 2022 GMC Sierra 2500 With The OEM Prep Package
  • Yes the Reese M5 5th Wheel Trailer Hitch for Chevy/GMC Towing Prep Package # RP26FR that you mention will fit your 2022 GMC Sierra 2500 with the factory prep package perfectly! This hitch has a maximum towing capacity of 20,000-lbs, a vertical load limit of 5,000-lbs, and features three height settings: 14", 16" and 18". Attached is a review video for you to check out as well.
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  • Which Adapter for Curt Sliding Hitch to Factory Pucks in 2021 GMC Sierra 2500
  • You'll want to use the Adapter Rails for Curt 5th Wheel Hitch - Ford and Chevy/GMC Towing Prep Package # C88KR which will give you a rail kit style adapter to use your Curt Q20 slider hitch with the factory pucks on your 2021 GMC 2500.
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  • Parts Required To Flat Tow A 2019 GMC 2500HD
  • For flat towing the 2019 GMC 2500HD Denali Duramax 6.6L V8 diesel engine model Sierra you need to follow the prescribed towing procedures outlined in your Owner's Manual. Only four-wheel drive vehicles with a two-speed transfer case that has a Neutral and a 4-low setting can be towed four wheels down. The negative battery cable must be disconnected and not touch the terminals. Also use of a shield mounted in front of vehicle grille could restrict airflow and cause damage to the transmission. Parts...
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  • 5th Wheel Trailer Hitch Install Kit for 2015 GMC Sierra 2500 Short Bed
  • I wasn't able to find a Draw-Tite hitch 50258 so I don't have specific details on it. Although if it fits industry standard rails you won't have a problem finding rails to fit. Check out the picture I've attached to measure the hitch and see if it fits the standard rails. However, the Reese # RP30868 underbed kit only fits the Reese Elite Series fifth wheel hitches and other hitches that fit the Ford factory puck system. Instead if it fits the industry standard rails use part # RP50066-58...
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  • B&W Slider 5th Wheel Hitch Options for 2016 GMC Sierra 2500 with 6-1/2-Foot Bed
  • For your 6-1/2-foot-bed 2016 GMC Sierra 2500 Denali you will need a sliding type 5th wheel hitch to give you enough turning clearance unless the 5th wheel trailer has a Sidewinder or Revolution pivoting pin box such as # RP34FR, for example. If it has a standard fixed pin box the slider is the other way to prevent your trailer overhang from suddenly "making friends" with the back of your truck's cab. You have two options for a B&W slider hitch. B&W makes excellent products and handles...
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  • Will Curt # 45955 Work With Curt Rebellion XD Adjustable Cushion Hitch Ball Mount
  • When it comes to The Curt Rebellion XD Shock Absorbing Adjustable Ball Mount w/ 2 inch and 2-5/16 inch Balls - 15K # C83WR and The Curt Pintle Hook with 2-5/16 inch Hitch Ball - Channel Mount - 20,000 pounds # C45922 will not work together. The Curt Pintle Hook with 2-5/16 inch Hitch Ball - Channel Mount - 20,000 pounds # C45922 will work well with The Replacement Shank for Curt Adjustable 2-Ball Mount - 2-1/2 inch Hitch - 20,000 pounds # C45917. I attached a review video link below.
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  • Which Replacement Legs for Curt Q25 Head to Be Used in 2020 GMC Sierra 2500 Factory Pucks
  • Yes. You can swap the legs on your Curt Q25 5th Wheel Hitch Head # C16565 with the Curt OEM 5th Wheel Hitch Legs for Chevy/GMC Towing Prep Package - 25,000 lbs # CU53FR. These legs will allow you to utilize the OEM prep package on your 2020 GMC Sierra 2500. I've linked a review video of these legs for you to have a look at, as well.
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  • Trailer Towing Mirrors For A 2023 GMC Sierra 2500
  • We have the perfect set of towing mirrors that are confirmed to fit your 2023 GMC Sierra 2500! The Longview Custom Towing Mirrors # LO54FR will slip over your vehicle's factory side-view mirrors and will extend your line or sight. The mirrors have a quick, slip-on installation with no tools needed. The mirrors have a durable ABS plastic housing that stands up to the elements and it has felt pads inside the housings that will help protect factory mirrors from scratches. I attached a...
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  • Is There an Underbed Mounting Kit Available for 5th Wheel Hitch on 2020 GMC Sierra 2500 6-1/2 Ft Bed
  • I have a solution for you, but unfortunately for the 2020 GMC Sierra 2500 with the 6-1/2 foot long bed, there is not an underbed mounting kit available. For this reason you would need to use an above bed rail kit and 5th wheel hitch. I recommend using the Reese # C16541 and rail kit # RP84FR, which is a custom fit for your truck. The # C16541 gives you a bit extra fore/aft travel on the slider than some of the other available hitches for your truck with 12" of travel, and the dual hook...
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  • Parts Needed to Flat Tow 2019 GMC Sierra Denali 2500 Behind Motorhome
  • If your 2019 GMC Sierra 2500 is a 4x4 model with a two speed transfer case that has a N and a 4WD Lo setting, it can indeed be flat towed. 2WD vehicles will need to be trailer towed. If your truck is indeed capable of being flat towed, you'll need base plates, a tow bar, safety cables, a wiring harness, a supplemental braking system and possibly a high/low adapter. For a base plate kit, I'd recommend the Blue Ox # BLU22QR, the # BX1739 fits the 2020+ models, and wouldn't work for your...
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  • Will the Westin HDX Grille Guard Hardware that Fits 2017 GMC Sierra 2500 Fit a 2015 GMC Sierra 2500?
  • Yes, since the Westin HDX Grille Guard with Punch Plate - Black Powder Coated Steel # 57-3795 fits both the 2017 GMC Sierra 2500 and the 2015 GMC Sierra 2500, the brackets that come with the grille guard will fit your vehicle. For just the hardware alone, you need the replacement hardware # 57-379PK.
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  • Do You Carry the Pollak HD 7-Pole Round Connector 11-702?
  • Yes! We do carry the Pollak connector you need. The 11-702 is the same as the Pollak HD, 7-Pole Round Pin Connector w/Cable Guard # PK11702. Sometimes manufacturers use different part numbers than what we use here at etrailer.
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  • Recommended Vent Cover for a MaxxAir 4951KFC Roof Vent
  • For your MaxxAir 4951KFC you can use the MaxxAir FanMate RV and Trailer Roof Vent Cover # MA00-955003. This cover easily attaches to the base of your roof vent using EZ clip pins for simple a install/uninstall, and has overall measurements of 26" long x 18-1/8" wide x 10-1/4" tall.
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  • 5TH Wheel Rail and Install Kit for a 2022 GMC Sierra 2500 Long Bed For B&W Patriot 5TH Wheel Hitch
  • To install your B&W Patriot 5th Wheel Trailer Hitch # BWRVK3255 in your 2022 GMC Sierra 2500 you will need the B&W Custom Installation Kit # BWRVK2505. This kit contains the custom fit under bed brackets, 5th wheel rails and all the hardware needed to install in your bed. The Hopkins Endurance 5th Wheel/Gooseneck 90-Degree Wiring Harness # HM54FR will allow you to install a factory style trailer connector in your bed. This will fit in the factory cutout and protects your trailer wiring...
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  • Recommended 5th Wheel Hitch And Installation Kit For A 2022 GMC Sierra 2500
  • You are correct, we do not currently carry any Pullrite products, unfortunately. However, if you are interested in another option we do carry plenty of other alternatives that'd work great with your 2021 GMC Sierra 2500. If your truck has the 6-3/4' bed without the OEM prep package, I recommend checking out the: -Curt A20 5th Wheel Trailer Hitch w/ R20 Slider # C16541, with the 5th wheel installation kit # C16429-204. This hitch has a 20K capacity, a vertical load limit of 5,000-lbs,...
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  • Parts Needed to Flat Tow 2015 GMC Sierra 2500
  • Yes, your 2015 GMC Sierra 2500 can be flat towed, and you MUST have a light kit and a supplemental braking system is also required by law in most states so you can check with your local authorities to find out if it is required where you are going to be flat towing. There are a number of parts you're going to need in order to do this, starting with compatible base plates. I recommend the Roadmaster MS Base Plate Kit # RM-3180-2 so long as the truck is a 4 wheel drive, which I assume it...
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  • Parts Needed to Install the Demco Hijacker Autoslide on 2021 GMC Sierra 2500HD without OEM Pucks
  • We've got just what you're looking for with the Underbed Rail and Installation Kit for Demco Hijacker UMS 5th Wheel and Gooseneck Trailer Hitches # DR37FR, which is the underbed mounting kit for your 2021 GMC 2500HD. This is compatible with your Demco Hijacker Autoslide 18k # DM8550022 and will allow you to mount the hitch when towing and have an obstruction free truck bed when you're not. I've linked a review and installation video of this for you to check out as well.
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  • Adapter Needed For Furrion Vision Camera System On a 2023 GMC Sierra Denali 2500
  • For the Furrion Vision S Wireless RV Backup Camera System # FOS05TASF to function properly on your 2023 GMC Sierra 2500 Denali you will need a 7-Way Vehicle Power Adapter # FR87PR. This adapter will provide a constant 12 volt signal to the running lights on your trailer which powers the Furrion camera. Currently your Sierra puts out a Pulse Wave Modulation which while not affecting the running lights it does cause issues for the Furrion and other camera systems that tie into this same power...
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  • How to Install Third Break Light for Cap on a 2018 GMC Sierra
  • The pictures you are referring to are actually for older Silverado and Sierra pickups. I am not aware of any special wiring near the rear of your 2018 GMC Sierra 2500 but you can easily isolate the brake signal by using the 3rd Brake Light Logic Module # PP20-702. This connects to your left and right turn circuits and then gives you a separate wire for the 3rd brake light (see attached wiring diagram).
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