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GMC Sierra Fifth Wheel Hitch

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Fifth Wheel Hitch


Available Years for GMC Sierra Fifth Wheel Hitch


5th Wheel Hitch with Custom Installation Kit

Big trucks require big hitches! We offer high quality Reese, B&W, Draw-Tite, Husky, Demco and Curt fifth wheel hitches that are the perfect fit for your heavy duty towing needs. From standard 5th wheel hitches to slider systems for short bed trucks, we have an application for you. From our Pro Series fifth wheel to Reese's top-of-the-line Signature Series, you can find the perfect fifth wheel for your payload while staying within your budget.

We offer custom rail kits for many of the most popular vehicles including Ford, Chevrolet, Dodge, GMC, and Toyota. Choose a Signature Series hitch and rails to retain full use of your truck bed while not towing. Find the custom installation kit for your vehicle by entering the year, make, and model to the left.

Add a fifth wheel lube plate, pull pin lock plates, and in-bed wiring to round out your fifth wheel towing setup.




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GMC Sierra Fifth Wheel Videos

Fifth Wheel Installation - 2012 GMC Sierra

Today on our 2012 GMC Sierra Denali well be installing the 5th wheel hitch, part number RP30081 and the Reese base rail kit part number RP50066-58. Our first step will be installing the rear base rail. We need to measure from the end of the truck bed to the back edge of the rear base rail. Once we get our length, well then measure side to side to make sure were center of the bed.Now that weve got our base rail in position we need to go ahead and mark the holes. Im going to use a color paint pen so that it really stands out for me. Now with my holes marked out, Im going to go ahead and take an eight inch bit to make a pilot hole.



Fifth Wheel Base Rail Kit Installation - 2010 GMC Sierra Pickup

Today on this 2010 GMC Sierra we are going to install part number RP50064-58. The first thing we need to do is lower the spare tire to get it out of our way which we have done already. The next thing we need to do is remove the heat shield and loosen the exhaust up a little bit too. First off we will work on the rear exhaust hanger right here. We are going to spray it down with some lubricant and that way what will happen is that will loosen our exhaust up so we can move it back and forth to give us a little more room when you cut out the heat shield. If you need a little more working room you can always go one more up and remove this hanger too. 00:35



Fifth Wheel Hitch Installation - 2008 GMC Sierra 2500 HD

Today on this 2008 GMC Sierra 2500 HD we will be installing Curt fifth wheel Q5 with roller part number 50064 and part number 16500. We will also be installing the fifth wheel installation kit with rails part number 50061-6008. Go ahead and lower the spare tire up out of the way. Also on some models you will find that the heat shield over here on the passenger side will interfere with the installation of your frame brackets. If that is the case you may want to go ahead and remove the heat shield out of the way as well. Okay on the models that have the factory installed electrical brake control unit will need to relocate the electrical plug mounted to the inboard side of the driver side frame rail here. Loosen those up and you can see that we can actually take the heads of the bolts, slide the bracket forward, and pop them out those larger holes there. 00:59





GMC Sierra Fifth Wheel Questions and Answers


  • Brake Controller Port Location on a 2014 GMC Sierra 1500
  • Its in the junction box located under the dash, to the left of the steering column just above the carpeting. The recommended harness to install a Tekonsha brake controller is the Tekonsha Plug-In Wiring Adapter # 3016. I attached an install video for this harness that shows how it would install. The brake controller we recommend the most is the Prodigy P2 Brake Controller part # 90885. This is the best selling controller on the market because of how easy it is to setup and use, and...
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  • Will the Curt Fifth Wheel Rail Kit Work with a Pro Series 15k Fifth Wheel Hitch
  • Yes, the Curt Fifth Wheel Installation Hardware part # C16411-204 that you referenced has been confirmed to fit a Pro Series 15k Fifth Wheel Hitch like what you have. The rails of this hardware kit are confirmed to fit Curt, Draw-Tite, Hidden Hitch, Reese, Valley and Husky 5th wheel hitches as they are designed to match industry standard rail dimensions like what is in the picture I attached.
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  • Compatibility of B&W 18K Patriot Hitch BWRVK3270 with Reese Base Rail Kit RP56001-53
  • The B&W Patriot Sliding 5th Wheel Trailer Hitch # BWRVK3270 is compatible with any brand of industry standard rails (ISRs) including the Reese kit # RP56001-53 which is a confirmed fit for your 2013 GMC Sierra 2500HD with a 6-1/2-foot bed. The Patriot Slider provides 12-inches of front-to-back travel to allow you more easily make your low-speed maneuvering turns. If you need a wiring harness for the truck bed you can use part # 50-97-410 from Bargman. This is a simple plug-in installation,...
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  • Will a B&W Patriot 5th Wheel Hitch Fit a Curt Install Kit and Rails on a 2013 GMC Sierra
  • The B&W Patriot 5th wheel trailer hitch # BWRVK3200 is compatible with industry-standard, above-bed rails from B&W, Curt, Draw-Tite, Hidden Hitch, Pro Series, Reese, and Valley. So it will fit the Curt installation kit # C16411-204!
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  • Can a 5th Wheel Install Kit be Installed on 2013 GMC Sierra w/Curt Gooseneck Hitch Already Installed
  • In order to install a different 5th wheel or gooseneck installation kit in your 2013 GMC Sierra the old one, C611-605, would have to be completely removed. The alternative is to keep the gooseneck hitch you have and use the X5 adapter, # C16220, and a hitch that fits in above the bed 5th wheel rails such as the Curt Q24, # C16546. I have linked a video review of this hitch for you.
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  • Will the Tail Gate on a 2013 GMC Sierra 3500HD Interfere when Towing a 5th Wheel Trailer
  • To determine if the clearance is going to be an issue you will want to measure from the center of the trailer hitch jaws straight back to the end of the tail gate when down. Then compare that to the distance from the center of the king pin on the trailer straight back to the trailer overhang (or where ever it might contact the lowered tail gate). With these measurements it should become clear if there will be an issue. You mentioned having a pin extension. If it is anything like the...
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  • Recommended 5th Wheel Rail Kit For 2013 GMC 2500 With 6-1/2 Foot Bed
  • For your 2013 GMC 2500 with 6-1/2 foot bed, I recommend the Reese Quick-Install Custom Base Rails and Installation Kit for 5th Wheel Trailer Hitches # RP50066-58. This 5th wheel rail kit will give you the correct fit for your Pro Series 15K Slider Hitch which has been discontinued but is similar to the # PS30093. If you have the bed rails and just need the brackets, I recommend the Reese Quick-Install Custom Bracket Kit for 5th Wheel Trailer Hitches # RP50066 but you will also need...
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  • Custom Base Rails and 5th Wheel Installation Kit Recommendation for 2013 GMC Sierra 2500 Short Bed
  • When it comes to base rails for your 2013 GMC Sierra 2500 Short Bed, you'll want to go with the Reese Quick-Install Custom Base Rails and Installation Kit for 5th Wheel Trailer Hitches, # RP50066-58. This kit offers vehicle-specific brackets, which minimizes drilling and measuring, and provides the attachment points for the 5th wheel rails which are compatible with your 16k Reese slider hitch. I have attached a video of these rails being installed on a similar truck for you to check out.
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  • 5th Wheel Hitch and Installation Kit Recommendation for 2013 GMC Sierra 2500HD 6-1/2-Foot Bed
  • The best sliding 5th wheel hitch for you will depend on whether or not you ever want to be able to tow a gooseneck hitch and if it is a requirement that you can have a clear bed - without hitch rails - in order to handle cargo hauling. Some options provide one or both of these additional capabilities. If both gooseneck towing and the ability to have a totally clear bed are desirable features for you then the choice is easy, the B&W under-bed rail kit and 20K Companion Slider Hitch, parts...
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  • Locking a 5th Wheel Hitch to the New Reese Outboard Mount Instillation Kit and Rails
  • If you are currently using the standard 3-1/4 inch long pins, # 6014, then you can add lock plates, # RP58093, and use a padlock to secure the hitch to the rails. The longer pins are # RP58467 but they cannot be used with the lock plates. In this case a short cable lock like # 8156DPS could be used.
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  • Fit and Compatibility of B&W Patriot on the Reese Outboard Installation Kit on 2013 GMC Sierra 3500
  • Yes, the B&W Patriot # BWRVK3200 will work with the Reese Outboard Kit with rails # RP56001-53. Also the Reese Outboard Installation kit and rails are a confirmed fit for your 2013 GMC Sierra 3500 8 foot bed. I have linked both products to this page for your convenience as well as an installation video of the outboard kit and rails on a similar Sierra for you to check out.
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  • Will Reese Fifth Wheel Installation Kit Work With Pullrite Hitch On 2013 GMC 2500
  • We have several fifth wheel installation kits that are designed to fit your 2013 GMC Sierra 2500. The # C16400-204 kit is not a fit because it is designed for the 1500 only. If your Pullrite hitch can work with industry standard fifth wheel rails I recommend part # RP50066-58. This kit cuts installation time in half compared to a universal installation kit.
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  • Is Curt Fifth Wheel Rail Kit Part # C16100 Compatible with Pro Series Fifth Wheel Hitch
  • Yes, the Curt fifth wheel rail kit part # C16100 that you referenced is compatible with Pro Series fifth wheel hitches. The rail design is the industry standard design that Pro Series hitches are designed to fit.
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  • More Accurate Hole Location for Installation of the Elite Series Under-Bed 5th Wheel Install Kit
  • Our customers review is correct, the manufacturer changed the installation procedure and eliminated the pointed bolt that he mentioned. The 3-1/4 inch holes that are recommended should be drilled in the bed at the locations laid out in the instructions for proper installation with the parts supplied in the Under-Bed Rail and Installation Kit, # RP30868, for your 2012 GMC Sierra. The puck trim ring is designed to cover any gap between the puck and bed, so the oversized hole will not be seen...
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  • Can 5th Wheel Rails be Installed Over a Plastic Bed Liner on a 2012 GMC Sierra 2500HD
  • Since you have a plastic bed liner in your 2012 GMC Sierra 2500HD you will have to trim the liner in the foot print of the bed rails in order to install the kit, # C16411-204, in the truck. Plastic bed liners do not provide a stable surface which is why they have to be trimmed. All you will do is follow the instructions, linked for reference, to place the rails. Then trace around the rails, and then you can trim it with a rotary tool or similar. I recommend taking the liner out of the...
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  • Fifth Wheel Installation Kit Recommendations for a 2012 GMC Sierra 1500
  • There are specific 5th wheel installation kits for the 2012 GMC Sierra 1500 depending on the bed length of your truck. If you have an 8 foot bed, 6-1/2 foot bed, or 5-1/2 foot bed you can use custom installation kit # RP50064-58 or universal kit # RP30035. I have included installation detail links for you to view that will show you how to mount the below bed brackets. The difference between the kits is the amount of drilling required and the average time for installation. The custom...
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  • Will the Reese Installation Kit # RP50066-58 Fit Gas and Diesel 2012 GMC Sierra 3500
  • The Reese Quick-Install Custom Base Rails # RP50066-58 that you referenced will work on the gas and diesel model 2012 GMC Sierras and should work well on your truck. I attached installation instructions and an installation video for this product for you to check out also.
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  • Long 5th Wheel Trailer Hitch Installation Kit Rails for a 2012 GMC Sierra 2500HD Short Bed
  • The rails that come with the installation kit # RP50066-58 are designed to fit to the brackets on the inboard side of the frame rails. The longest rails available are 48 inches long in kit # RP56001-53. This kit also have special brackets that fit on the outside of the frame rails on the truck. I have included a link to the installation details for you to view.
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  • Sliding 5th Wheel Hitch Compatibility With Reese Underbed Puck Style Rail Kit # RP30868
  • The only 5th wheel slider directly compatible with the Reese Underbed Rail Kit # RP30868 is the Reese Elite Series Pre-Assembled 5th Wheel Hitch w/ Slider, Wiring Harness - Single Jaw - 18,000 lbs, # RP30144. This is an excellent hitch that will keep the bed of your truck extremely clean when uninstalled and customized when installed. This hitch comes with a wiring harness to allow you to put a 7 way in the bed of your truck. The hitch has rounded rails to allow it to slide smoothly...
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  • Recommended 5th Wheel Hitch And Underbed Rail Kit Compatible With Revolution On 2012 GMC Sierra 2500
  • There is only one underbed rail and hitch system we carry that is compatible with your 2012 GMC Sierra 2500 and a Revolution pin box. My recommendation is the Demco Hijacker UMS Double Pivot 5th Wheel Trailer Hitch - Single Jaw - Underbed - 21,000 lbs, # DM8550032 and the Underbed Rail and Installation Kit for Demco Hijacker UMS 5th Wheel and Gooseneck Trailer Hitches, # DM8551003. This system will give you a rail free design that will allow full access to your truck bed then hitch is...
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  • Fifth Wheel Rail Install Kit Recommendation for a 2012 GMC Sierra 1500 5-1/2 ft Bed
  • The Curt Install Kit with Rails, # C16411-204, that you referenced is designed to fit all hitches that are designed to fit industry standard fifth wheel rails. So yes, your Reese 14k hitch will fit this kit. However, this rail kit isn't designed to fit your 2012 GMC Sierra with a 5-1/2 foot bed, instead you would want the part # RP50064-58. This is a very similar custom install kit that will work on your vehicle. Since your truck bed is so short you will need to use a Sidewinder pin...
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  • Will the Reese Universal 5th Wheel Trailer Hitch Installation Kit Fit a 2012 GMC Sierra
  • The Reese universal 5th wheel trailer hitch installation kit # RP30035 is listed as a fit for all models and bed lengths of the 2012 GMC Sierra. I have included a link to the installation instructions. If you have a 2500 or 3500 then you will need to look at page 5 (sheet 4 of 21). For a 1500 you would need the page after that.
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  • Does the Rail Kit part # RP50064-58 Include all of the Needed Hardware to Install
  • The Reese Quick-Install Custom Base Rails # RP50064-58 that you referenced does come with the 4 parts included in the main picture on the product page plus all the necessary hardware to install the rails. I attached a picture that shows the included hardware and an install video for you to check out.
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  • Recommended 5th Wheel Base Plate Installation Kit for the Curt A16 Hitch on a 2012 GMC Sierra
  • If your 2012 GMC Sierra has a 6-1/2 foot or an 8 foot bed then I recommend installing the Reese Quick-Install Custom Base Rails and Installation Kit # RP50064-58 to add the base rails that you will need to install the Curt A16 5th Wheel Trailer Hitch # C16120 in your picture. If you have the 8 foot bed then you will not need a sliding 5th wheel hitch. If you have the 6-1/2 foot bed then you will want to install the Curt R16 Round Tube Slider # C16560 with your A16 5th wheel head instead...
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  • Fifth Wheel Trailer Hitch Installation Kit Recommendation for a 2011 GMC Sierra 2500HD
  • The use of the Reese universal 5th wheel installation kit, # RP30035, does require drilling into the frame for installation. I have included a link to the installation instructions for you to view. We recommend a custom kit because there is far less drilling involved, you will not need to drill the frame in most cases, the brackets are designed to fit the frame rails on the truck, and the installation time is reduced by as much as 50 percent over the universal kit. For you truck...
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  • Custom 5th Wheel Trailer Hitch Installation Kit for a 2011 GMC Sierra 2500HD Diesel
  • The installation kit you need for your new 2011 GMC Sierra is the Reese Quick-Install Custom Base Rails and Installation Kit, # RP50066-58, that you have referenced. I have included a link to the installation details and a video featuring this installation kit for you to view. Because this is a quick-install kit, the estimated installation time is 2.5 hours.
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  • Is a Pull wire included with the Universal 5th Wheel Rail Kit for a 2011 GMC Sierra Pickup
  • Yes, there is one pull wire included with the Reese Universal Base Rail Installation Kit, # RP30035, for pulling the bolts from and access hole in the truck frame into the mounting hole location. The Universal Kit that you referred to will work on the 2011 GMC Sierra, but for a much easier installation, I would recommend going with a custom install kit, to reduce drilling into the truck frame and reduce installation time. All of our fifth-wheel installation kits include the pull wires...
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  • Will a Husky Slider 5th Wheel Trailer Hitch Fit Reese Installation Kit 56001-53 on a 2011 GMC Sierra
  • Yes, Reese 5th wheel trailer hitch installation kit, # RP56001-53, is compatible with your Husky slider 5th wheel trailer hitch. The rails will also accept Curt, Draw-Tite, Hidden Hitch, Reese, and Valley 5th wheel hitches that fit above the bed rails. I have linked installation instructions and a video showing installation for kit # RP56001-53 for you.
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  • Under-Bed Rail and Installation Kit # RP30868 Works with Reese Signature Series 5th Wheel Hitches
  • Yes, the Reese Signature Series 5th Wheel Trailer Hitches are compatible with the Under-Bed Rail and Installation Kit, # RP30868, as long as the truck bed on your 2011 GMC Sierra is 6-1/2 feet or longer. I have included a link to the installation details for the installation kit for reference.
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  • B&W 5th Wheel Trailer Hitch Custom Base Rails and Install Kit for 2011 GMC Sierra 2500
  • The B&W install kit for fifth wheel hitches that fits your 2011 GMC Sierra 2500 is # BWRVK2501. I've linked an install video on a 2015 Chevy for you. The # BWRVK2401 install kit you looked at is for Ford trucks.
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  • Recommended Universal Base Rails for 2011 GMC Sierra 3500
  • A universal 5th wheel base rail kit, such as the The Curt Universal Fifth Wheel Base Rails with Installation Kit # C16100, will fit a wide variety of pickups including your 2011 GMC Sierra. This kit includes base rails, hardware and universal, and L-shaped brackets. Please note that Universal base rail kits like this tend to take longer to install and require more drilling than custom kits.
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  • Can I Haul Fifth-Wheel or Gooseneck Trailer With 2010 GMC Sierra 1500 5.5 Ft. Short Bed 2WD Crew Cab
  • For a fifth wheel hitch, we do have applications for the 5.5 ft. bed of the 2010 GMC Sierra 1500, but use of a Sidewinder King Pin is required for clearance. A Sidewinder King Pin will move the pivot point of the trailer back 22 Inches which will give you additional clearance needed to make turns (see Sidewinder FAQ). Before buying a fifth wheel trailer, I would recommend using our Pin Box Conversion chart that shows all the fifth-wheel pin boxes that are compatible with Sidewinder King...
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  • Pickup Truck for Towing Grand Design 5th Wheel with 8500-lb Dry Weight
  • Generally we recommend 3/4-ton long bed trucks for 5th wheel towing. Although the 2007 - 2013 Sierras with 6.2L V8 have 400+ horsepower (enough power for your trailer's weight) the short bed makes maneuvering the 5th wheel a challenge since you have reduced turning clearance. Short bed trucks CAN be used for 5th wheels by using a slider hitch or better still a Sidewinder. A Sidewinder replacement pin box extends the pivot point rearward from the hitch by 22-inches, almost double the additional...
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  • Do Reese Fifth Wheel Rail Kits have Weight Capacities
  • We've asked Reese before about the weight capacity of their fifth wheel rail kits like the part # RP30035 that you referenced and they have told us that the limiting factor will always be the hitch that is installed in the rails and the rail kit essentially will support the capacity of any fifth wheel hitch that is installed in them. That includes overall trailer towing capacity and pin weight capacity which is the vertical weight the hitch puts down onto the rails.
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  • Install Brackets for Fifth Wheel Hitch on 2010 GMC Sierra
  • The #RP30035 install kit should work fine with your new Sierra, although I would recommend using new hardware, part # RP30439. We do offer a custom install bracket kit for the 2010 Sierra with the 6.5 or 8 foot bed, part # RP50064. This kit includes the brackets and the hardware, and would allow you to use your existing bed rails. The advantage of using this kit is that it usually takes about half the time to complete the installation. I will provide a link to the install instructions...
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  • What Reese Fifth Wheel And Installation Kit Will Fit 2010 GMC Sierra CrewCab With A 5-1/2 Foot Bed
  • To install a fifth wheel on your 2010 GMC Sierra SLE CrewCab with the 5-1/2 foot bed you will need to use a fixed fifth wheel hitch and a Sidewinder to be able to get the needed clearance between the truck cab and the fifth wheel. The Sidewinder will move the pivoting point of your fifth wheel an extra 22 inches away from the vehicles cab. On trucks that have a bed shorter than 6 feet, if you were to use a fifth wheel hitch with a slider in a truck with a bed that short, you would almost...
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  • Can I Re-Use the Universal Fifth Wheel Install Kit and Hitch from my Old Truck on a 2009 GMC 1500
  • The Sidewinder would be a great choice. It will add the extra clearance needed and you will not have to get out of your truck to the unlock a slider. You can re-use the old universal install kit and hitch from your previous truck. If you will be installing this yourself, I would recommend purchasing a set of custom fit brackets, part # 50064. They significantly cut down install time by using factory frame holes and they are shaped to better fit the frame. Part 50064 is the frame brackets...
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  • Comparison of Fifth Wheel Rails Part # RP58058 and Rails in Install Kit Part # RP30035
  • In short, yes they are the same. Part # RP58058 is just the rails. Part # RP30035 is the same rails and a universal bracket kit for trucks that do not have specific bracket kits. The part you were looking at, part # RP50064-58, is the fifth wheel kit I would recommend for your 2009 GMC Sierra. The custom fit brackets in that kit will significantly reduce install time as they use as many factory drilled holes as possible to reduce the amount of drilling necessary for install. We have...
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  • Recommendation for a 5th Wheel Trailer Hitch on a 2009 GMC Sierra 1500 Crew Cab
  • There are numerous 5th wheel trailer hitch options available for a 2009 GMC Sierra 1500. The right one for your truck and trailer depends on a couple of factors. First, there are 3 different bed length options, 5-1/2 feet, 6-1/2 feet long, and 8 feet long. Since you have a crew cab, I am inclined to believe you have either the 5-1/2 foot bed or the 6-1/2 foot bed. If you have a 5-1/2 foot bed, in order to tow a 5th wheel trailer, you will need a standard 5th wheel hitch and a Sidewinder...
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  • Will RBW-X16 Slider Hitch fit Reese Fifth Wheel Rails RP50064-58 for a 2009 GMC Sierra 2500
  • Part # RP50064-58 will fit your 2009 Sierra. These install kits are manufactured by Reese and are compatible with Reese fifth wheel hitches. I spoke with my contact at Reese and the tabs for the pins at the feet of the fifth wheel should be 22 inches, center to center, from front to back. Side to side should be 29 inches, center to center. He checked, and the RBW-X16 should be those measurements. I would double check your hitch to make sure.
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  • Difficulty of Installing Fifth Wheel Hitch Install Kit Part # 50061-6008 for a 2009 GMC Sierra 3500
  • Fifth Wheel install kit, part # 50064-6008, does not require any drilling of the vehicle frame. The mounting brackets use existing holes and U-bolts to attach to the frame. You will need to drill some holes in the bed of the truck to attach the rails to the brackets that are mounted to the frame of the truck. Any fifth wheel install kit will require drilling through the bed. These kits can be installed without a lift. A lift just makes access easier and will cut down on install time,...
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  • Fifth Wheel Hitch Info for Towing a 2007 Forest River Signature with a 2009 GMC Sierra 5-1/2 Ft Bed
  • For your 2009 GMC Sierra 5-1/2 Ft Bed pickup, I recommend the Reese 5th Wheel Trailer Hitch - 20,000 lbs, item # RP30081, along with the Reese Quick-Install Custom Base Rails and Installation Kit, item # RP50064-58. You will then need a Sidewinder pin box for your 2007 Forest River Signature Fifth-Wheel RV, so that you can tow the RV and have clearance for turning between the trailer loft and the cab of the vehicle. Slider hitches do not provide sufficient clearance for maneuvering with...
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  • Installing Fifth Wheel Mount Kit on 2009 GMC Sierra
  • Yes, 5th Wheel mount kit part # 50064-6008 is the right rail kit for your 2009 GMC Sierrra. The install kit uses many factory holes in the frame and wraps around the frame so as not to damage or collapse the frame. I have included a video of a 5th Wheel install on a 2007 Chevy Silverado 2500 that should be of some help in explaining the install process. I have also included a link to the install instructions.
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  • Base Rail Recommendation for a 2009 GMC 2500HD with a Reese Pro Series Quick Slide 5th Wheel Hitch
  • Yes, this Reese Quick-Install Custom Base Rails and Installation Kit # RP50064-58 would be the compatible with your 15k Reese Pro Series Quik Slide fifth wheel hitch. This is also the correct installation kit for you to use in your 2009 GMC Sierra. I attached installation instructions for this product for you to check out as well as a video of this product being installed in a similar vehicle as yours.
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  • Will the PullRite SuperGlide 2700 work with the Reese Universal Base Rails Part # RP30035
  • Yes, the Pullrite SuperGlide 2700, for industry standard rails, will work with the Reese universal base rails and installation kit # RP30035.
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  • 5th Wheel Trailer Hitch Installation Kit for a 2008 GMC Sierra 1500 Short Bed
  • You can install a 5th wheel trailer hitch in a 1/2 ton truck although the best trucks for 5th wheel towing are 3/4 and 1 tons. As long as the trailer is within the towing capacity of the truck (consult the truck owners manual) you will be fine. There are custom kits and universal kits available for your 2008 GMC Sierra 1500. A custom kit is easier to install, takes less time, and requires less drilling. You can use # RP50064-58 for a custom installation kit. I have included a link to...
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  • Where do the Curt Custom Fifth Wheel Installation Kit C16400-204 Rails Install on a 2008 GMC Sierra
  • From the picture that you sent it looks like you have the Curt Custom Fifth Wheel Installation Kit # C16400-204 for your 2008 GMC Sierra. If this is the case from the end of the bed that the tailgate is connected to, to the rear edge of the rail that sits closest to the cab will be 47.500 inches on a short bed and 52.375 inches for a long bed (see attached picture). This should put your 5th wheel hitch directly above or slightly in front of your rear axle. Keep in mind that these measurements...
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  • 5th Wheel Trailer Hitch Install Kit for a 2008 GMC Sierra 2500 and RBW Lil Rocker
  • The RBW Lil Rocker 5th wheel hitch will fit in Reese above the bed rails. For your 2008 GMC Sierra you can use custom installation kit # RP50064-58 or universal installation kit # RP30035. The custom kit is preferred because it requires much less drilling and installs in less time compared to the universal kit. I have included links to the instructions for each kit and a link to a video showing a typical installation of the custom kit for you.
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  • Can a 5th Wheel Hitch and Gooseneck be Installed on a 2008 GMC Sierra at the Same Time
  • For the most part you can't have both a gooseneck hitch and 5th wheel hitch installed at the same time. But if your gooseneck happens to be a B&W Turnover Ball then you could use the Companion hitch # BWRVK3500 for a long bed or # BWRVK3400 for the short bed. These hitches mount in the gooseneck ball hole of the B&W hitches and allow you to tow a 5th wheel trailer with the gooseneck hitch. If you do not have a B&W gooseneck hitch then I recommend the Andersen Ranch Hitch, # AM3100. It...
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  • Fifth Wheel Hitch Rail Kit Recommendation for 2008 GMC Sierra 1500 5-1/2 ft Bed
  • Curt does not offer a fifth wheel rail kit fit for the 5-1/2 foot bed version of your 2008 GMC Sierra 1500. The good news is that Reese does and a Curt hitch would fit them just fine. For that you would want the part # RP50064-58 which is a confirmed fit.
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