Fit and Installation of Reese Under-Bed Rail and Installation Kit for 2018 GMC 3500

Question

Question:

I ordered the reese complete underbed kit without oem prep package and the matching 5th wheel adapter and now that they are installed the 5th wheel adapter doesnt match up to the holes in the bed. I hope they didnt send me the wrong under bed mount. Mine are 30 inches apart in width and 13 inches from front to back.

asked by: Scott

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Expert Reply:

The Under-Bed Rail and Installation Kit for Reese Elite Series 5th Wheel Trailer Hitches, # RP30868 is the correct item for your 2018 GMC Sierra 3500. Be aware that this is not the same under bed kit/puck system that is installed on GM trucks at the factory. That system is not available as an aftermarket option.

Because Reese makes the under bed OEM rail kits for Ford, the Elite Rail kit # RP30868 that you have is the same pattern as the rail kit that Ford offers with their new trucks. What you have is compatible with any hitch that uses the Ford OEM prep package/Puck system.

The other part you ordered, the Reese 5th Wheel Rail Adapter, # RP49FR is not compatible with your newly installed system because it is for the Chevy/GMC OEM prep Package/Puck System and that is not what you installed. The Reese 5th Wheel Rail Adapter, # RP49FR should be returned.

If your objective is to use a hitch that you already have, an ISR 5th wheel hitch with your newly installed Under Bed Kit. You will need the Reese Elite Series Underbed Rail Adapter for Standard 5th Wheel Trailer Hitches, # RP30156 instead. Or, you can order a 5th wheel hitch that fits a Ford OEM Prep Package truck such as the Reese M5 5th Wheel Trailer Hitch for Ford Towing Prep Package, # RP30921.

expert reply by: Michael R

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Answer 1

For a B&W Patriot Slider #BWRVK3270, there is currently not an adapter to fit the Chevy factory pucks. The Demco 5th Wheel Rail Adapter for Chevy/GMC OEM 5th Wheel Towing Prep Package - 6-1/2' Bed - 21K #DM6194 will work with almost any other…

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Answer 2

B&W offers a replacement slider unit for the Patriot 5th wheel hitch, part #BWRVB3270. You'd simply remove the hitch head from the current stationary model and install it on the slider. This being said, the problem comes in when you try to…

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Answer 3

For your 2019 Jayco Jay Flight SLX Travel Trailer and with you wanting to go boondocking for multiple nights I recommend the Go Power Lithium RV Battery - Deep Cycle - LiFePO4 - Group 4D - 12V - 250 Amp Hour Item #34282740 For a solar set up I…

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Answer 4

With the Elite Series installation kit, #RP30868, installed, the center of the hitch jaws will be approximately directly over the center of the rear axle. You will want the center of the hitch jaws to be directly above or with a couple of inches…

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Answer 5

I went out to the warehouse and measured the Reese Universal Mounting Brackets, part #RP58314. The size of the round holes on the brackets is 9/16-inch and is made to accept a 1/2-inch size bolt. The size of the elongated holes on the top of the…

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Answer 6

I have a solution for you, but first let me show you how to determine if the B&W Companion Slider #BWRVK3400-5W will have enough clearance for your soon to be new toy hauler using our clearance formula. Below is the Clearance Formula that we use…

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Answer 7

You will have to go with a sliding hitch to allow the trailer to make tight turns. For a trailer 8 feet wide the only bed length that's going to allow 90 degree turns without a slider is a stationary hitch. That being said you have two options.…

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Answer 8

The OEM prep package consists of 4 "pucks" in the bed of the truck that will allow you to drop in puck style hitches for easy installation and removal, that gives you a completely clear bed when not in use. The B&W Companion OEM 5th…

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Answer 9

Choosing the right height setting for your 5th wheel hitch is a combination of a few different variables. First of all you want your towing setup to be as level as possible. With your Montana High Country 340BH level you will want to measure from the…

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Answer 10

The B&W Companion OEM 5th Wheel Hitch w/ Slider for Chevy/GMC Towing Prep Package #BWRVK3775 you're looking at will work fine with your new Chevrolet Silverado. This hitch has 3 height adjustments so you'll be able to set the hitch height…

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Answer 11

The head alone for the B&W Companion hitch #BWRVK3500 weighs about 70 pounds. Everything else weighs about 130 pounds. So the total weight of the hitch is approximately 200 pounds.

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Answer 12

Great question, Jeff! When the Rota-Flex first came out it renovated what a pin box could do and be, but at this point in time that technology is a little more dated and the Gen-Y Hitch Shock Absorbing 5th Wheel Pin Box #325-GH-8040 is the "new…

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