Which Demco Above Bed Fifth Wheel Rail Kit Fits 2021 GMC Sierra 1500 AT4
Updated 11/03/2025 | Published 01/02/2025
Products Featured in This Question
Question:
Can I use this Demco setup on a 2021 GMC AT4?
asked by: Mike
0
Expert Reply:
Hey Mike, yes you can use the Demco rail kit part # DM8552034-71 with your 2021 GMC AT4 1500 so that you can also use the slider fifth wheel hitch part # DM8550040
expert reply by:
Jameson C
0
Product Page this Question was Asked From
Demco Autoslide 5th Wheel Trailer Hitch w/ Slider - Single Jaw - Above Bed - 13,000 lbs
- 5th Wheel Hitch
- Sliding Fifth Wheel
- Above Bed Rails
- 3250 lbs Vertical Load
- 13000 lbs GTW
- Double Pivot
- Premium - Single-Hook Jaw
- 15-1/4 - 18 Inch Tall
- 22-1/2 Inch Fore/Aft Travel
- Demco
more information >
Featured Help Information
Instructions
Continue Researching
- Video: B and W 5th Wheel Trailer Hitch Base Rail Kit Installation - 2019 GMC Sierra 1500
- Video: Demco Premier Series Above-Bed Base Rails and Installation Kit Installation - 2019 GMC Sierra 1500
- Shop: Trailer Hitch
- Shop: Fifth Wheel Hitch
- Shop: Suspension Enhancement
- Q&A: LoadLifter 5000 Compatibility With Reese Underbed Rail Kit On A 2006 Ford F-250
- Q&A: Air Bag Kit Recommendation for 2019 Ford F-150 with Fifth Wheel Rail Kit Installed
- Q&A: Air Springs Compatible with Frame Mounted Hitch Brackets on 2018 Ford F-150 with 5.5 Foot Bed
- Q&A: Can 2019 Chevy Silverado 1500 5-3/4 ft Bed Tow Fifth Wheel Trailer
- Q&A: What Air Bags Work With Demco 5th Wheel Brackets & Base Rails on 2018 Ford F-150
- Q&A: Which 5th Wheel Brackets Work With Air Lift Loadlifter 5000 AL88288 On 2019 Chevy Silverado 1500?
- Shop: Replacement Linch Pins for Meyer and Diamond Snow Plows - 7/16" Diameter - Qty 10
- Shop: B&W Universal Base Rails and Installation Kit for 5th Wheel Trailer Hitches - 10 Bolt
- Shop: Demco Premier Series Above-Bed Base Rails and Custom Installation Kit for 5th Wheel Hitches
- Shop: Demco Autoslide 5th Wheel Trailer Hitch w/ Slider - Single Jaw - Above Bed - 18,000 lbs
- Shop: Demco Autoslide 5th Wheel Trailer Hitch w/ Slider - Single Jaw - Above Bed - 13,000 lbs
- Shop: Demco Premier Series Above-Bed Base Rails and Custom Installation Kit for 5th Wheel Hitches
- Shop: Demco Premier Series Above-Bed Base Rails and Custom Installation Kit for 5th Wheel Hitches
- Article: 4 Steps to Choosing Your 5th Wheel Pin Box
- Q&A: Install Instructions/Owners Manual of Demco Hijacker Autoslide Fifth Wheel 13k Fifth Wheel Hitch
- Article: Fifth Wheel Trailer Hitch Information and Installation Tips
- Article: Choosing the Right Suspension Kit for Your Truck and Trailer
- Article: Sidewinder with Rotating Turret for Short Bed Pickups
- Article: How to Accurately Measure Trailer Leaf Springs
- Article: Best Bike Racks for Electric Bikes
- Article: 5th Wheel Hitch Installation | The Ultimate DIY Guide
Jameson C.
11/3/2025
Hey Mike, how did the Demco rail kit and Autoslide hitch work out on your GMC AT4? Your update could make it easier for the next person setting up the same combo.