Compatibility of Hopkins HM40975 For In-Bed Installation on 2021 Chevy Silverado 3500  

With this truck bed configuration (6-3/4) on your 2024 Silverado 2500, you'll need a slider hitch so that you can make turns properly without the trailer making contact with your truck. I recommend the B&W Patriot #BWRVK3270 due to it's…

I can certainly help shed some light on the situation. I also am not aware of any app that calculates turning clearance. If only it were so easy right? If you have the option to purchase a long bed truck, that would be preferred. That way you will…

Yes, we have the Hopkins Endurance 5th Wheel/Gooseneck 90-Degree Wiring Harness #HM54FR. This kit includes the factory style 7-way/4-way connector to the fit the cutout in the bed of your 2024 GMC Sierra 2500.

The Hopkins 7-way/4-way kit part #HM40975 is the correct fit for your 2020 Chevy Silverado 3500. This will fit into the trailer wiring opening your truck has currently and plugs right into the harness you found behind the bumper as well. I attached…

In order to add an in-bed four and seven way gooseneck trailer wiring harness to your 2024 Chevrolet Silverado 2500 you'll want to use the Hopkins Endurance 5th Wheel/Gooseneck 90-Degree Wiring Harness part #HM54FR which features a simple plug-in…

You will want to use the Curt 7-Way Opening Cover Plate #C29CR to install the EZ Connector Magnetic 7-Way Trailer Connector #319-S7-06 in the bed of your 2021 Chevrolet Silverado 3500. This cover plate will cover the odd shaped hole of the factory…

Generally speaking, the lube plate will need to cover the skid plate on the 5th wheel hitch. There are some pin boxes out there that will recommend a specific lube plate but most of the times this classification will be from the 5th wheel hitch…

The #LC328492 Trail Air Flex Air Air Ride Pin Box you mentioned is not an extended pin box. When installed, the center king pin to first row of bolt holes in the turret would be right at 17-3/4 inches, as you can see in the provided diagram. I've…

The extended notation you have mentioned for the Lippert 1621 5th Wheel Pin Box part #LC1387883 is in regards to the style. This is also know as the "long" style and there are several other pin boxes with this style that have similar…

I went to our warehouse and measured the holes you mentioned you wanted the measurement for on the Lippert 1621 5th Wheel Pin Box, part #LC1387882. The holes measure 3/8 inch diameter. I have also attached a drawing of this pin box with the…

I spoke to Lippert who confirmed your Grand Design Reflection 303RLS uses a Lippert 1621 Pin Box. There, the Gen-Y Hitch Shock Absorbing 5th Wheel to Gooseneck Pin Box part #GY58GR which is what I recommend using is a fit. Unlike the Reese Goose Box,…

For almost all short bed trucks there just isn't enough distance between the cab and the trailer nose to allow for a sharp turn unless it's a trailer that is specifically designed for short bed truck turning clearance. The formula you need to…