Magnetic attached backup camera problem

[DC8Captain]

I recently purchased a backup camera for help hooking up my TT. It attaches to the rear hatch back tail gate of my 2002 Suburban and I take it off when done hooking up. The problem it it doesn't stick to the tail gate. The magnets stick fine to every other metal surface of the vehicle. The only two causes I can come up with is the tail gate is mostly auto body bondo or it's made out of aluminum. I have a small magnet I used to check all over the tail gate and the magnet doesn't stick anywhere including around where the window meets the metal. Can't be a bondo issue. I called my local repair shop with no luck and then called the Chevy dealership. The dealership said my tailgate is made out of steel and all 3d party aftermarket parts are made out of steel too. So why would the magnets not stick on the tail gate but stick all over the rest of the vehicle?

[troutcamper]

my 2007 ford expedition is same way on back tailgate,

[Scott91370]

Couldn't be aluminum the way Chevy makes fun of it!

But in all reality it probably is aluminum.
After searching the web there are several people that say it is.

[DanNJanice]

Maybe it is made out of some uber expensive carbon fiber titanium composite to save weight.
On second thought, nah, it is probably just made out of plain old aluminum to save weight.

[rodro123]

You could replace it with this.
https://www.tadibrothers.com/product...-backup-camera

[DC8Captain]

I am aware of the license plate cameras. Unfortunately I have a ball mount that rises in order to get the proper height. This blocks the view to help with hooking up the TT. I tried the view angle with the other camera just to check that option. Thanks for the suggestion. I may just attach a piece of metal, or a sheet magnet, to the tail gate with auto body double sided tape so the magnetic base of the camera will hold on.

Dale