Anyone using a Andersen Ultimate on a 2020 GM truck?

TxGearhead wrote:
I have no idea about Andersen, I have a Pull Rite single point which is essentially the same. Pull Rite says the Chevy under bed "joists" are not where they would support the Pull Rite and they require a kit to fix that. I don't know where the Andersen feet would sit in the bed, that may be something to check with Andersen.

I contacted Andersen customer service and here's what they said:

"The new 2020 Chevy’s and GMC’s do not require any additional support under the truck bed as they have re-enforced the truck bed."

Actually my AF (2011) doesn't have the sculpted corners. There is a radius to the front cap where the sides are about 4" back from the center which might help a little. It's my understanding that the Andersen hitch distributes the weight of the pin across the base of the hitch which sits pretty squarely over the axle. That's the theory, anyway.

As gkainz pointed out above, there are some configuration options that would let me tune the distance to get it as far forward as possible without risking contact with the cab. There are also concerns for contact by the pin box with the bed sides and tailgate that have to be considered.

Towing 9+ inches behind the axle is not a good idea, and will remove weight from the front.
I'm pretty sure your Arctic Fox has sculpted corners on the front cap, and would not need that far of an offset for safe towing.

Thanks. I'll contact Andersen to see they have the same issue with the joists.

I have no idea about Andersen, I have a Pull Rite single point which is essentially the same. Pull Rite says the Chevy under bed "joists" are not where they would support the Pull Rite and they require a kit to fix that. I don't know where the Andersen feet would sit in the bed, that may be something to check with Andersen.

Thanks, Gkainz. That's good stuff. I'm actually pleased with potentially being able to get 9.375" offset away from the cab. It sounds like I can tune things somewhat with this hitch as you have shown. If you look at the footprint of the OEM puck system on the new GM trucks, the GN puck is not centered between the 5th wheel pucks. It is offset toward the back of the bed somewhat. Unfortunately, the dealer is installing running board steps right now before I take delivery or I would go out and measure. I am still hoping someone else here has the same setup and can share his (her) experience.

I have the Andersen Ultimate but no experience with the Chevy truck. However, I posted in a different thread here
the following that might be helpful:

Clearance of your pinbox, frame etc, to bed must be checked by you and this post contains no warranty that these settings or positions will clear all obstructions in your particular installation.

The Andersen Ultimate 5th wheel hitch has 4 combinations of positioning that can adjust fore and aft placement of the pin.

The documentation and specs can be found on the andersen website - pick the spec to match the hitch you're curious about The Andersen frame (at least mine - older version) is labeled with "This side towards cab" but communication with Andersen verified I can install it either direction.

The ball leg of the frame is offset from the gooseneck ball connector by 5.375". So, that gives you 10.75" of adjustment fore and aft of the gooseneck ball (not variable adjustment, just 2 different "placements"). The adapter plate that mounts to the kingpin has a 4" offset, and can be oriented forward or aft, yielding an 8" difference. So, ranges of adjustment from the gooseneck ball (my example) can be:

Option 1
- frame pointed aft -5.375"
- adapter pointed aft -4.00"
total aft offset -9.375"

Option 2
- frame pointed aft -5.375"
- adapter pointed forward +4.00"
total aft offset -1.375"

Option 3
- frame pointed forward +5.375"
- adapter pointed aft -4.00"
total forward offset +1.375"

Option 4
- frame pointed forward +5.375"
- adapter pointed forward +4.00"
total forward offset +9.375"

This only addresses fore and aft adjustment. The ball has 3 height positions, measured from the bed of the truck to the top of the ball
+ 16.5"
+ 17.625"
+ 18.75"