I have some alternative solutions for you but it looks like there hasn't been a fit released yet for the 2020 or the 2021 Cadillac CT5. For alternatives we have trunk mount bike racks and roof mount racks.
For a trunk mount rack I recommend the Yakima FullBack # Y02634 because it's easy to install, comes with bike and rack locks, plus it can fold up nicely for storage. You'll place the base pad 1-3/4" above your bumper and use the Hub Setting 1 for fitment. Attached is a video of me putting... view full answer...
As of right now it doesn't look like anyone has a standard custom fit hitch for the 2020 Cadillac CT5 so you'll have to have something fabricated in order to add a hitch to your vehicle. If you plan on going this route then I recommend requesting a hitch with a 2" receiver as that will fit with a wider variety of accessories out there - including a bike rack.
Then for a standard-style e-bike rack I recommend checking out the Hollywood Racks Sport Rider SE # HLY84FR which is compatible... view full answer...
I do have a solution, but nobody makes a custom-fit hitch for the 2021 Cadillac CT5. This means the only option is to have a custom hitch made specifically for your vehicle. What you can do is take the Curt Weld-On 2" Receiver for Custom Fabricated Hitches # E17 to a local fabricator and have them fashion a hitch for you. view full answer...
I do have a solution as currently I do not see any aftermarket hitch manufacturer with a solution for your 2021 Cadillac CT5. You may be able to have a custom fabricated hitch made at a local welding shop. We have the Curt Weld-On 2" Receiver # E17 which they can use to fabricate a receiver for you.
The ZCI Circuit Protected Vehicle Wiring Harness # 119250KIT will allow you to add a 4-way flat connector to your CT5. This uses sensors which clamp over the tail light wiring to sense when... view full answer...
You can use a trunk mounted bike rack with your 2022 Cadillac CT5 but unfortunately, there are no trailer hitches that fit. This is true for previous years for that vehicle as well. For a trunk mounted bike rack I recommend the Saris Bones EX 2 Bike Rack # SAR83FR. view full answer...