David Janowitz

Now that I've looked at them closely, that sounds right. Now to explain it to the dealer! Thanks for the link.

My 2020 Denali HD was built with so many "Packages" that it's hard to figure out where the TPMS sensors were, but 4 were shipped with the truck. My local tire dealer took the wheels off our Airstream, broke the tires loose, installed the sensors and then activated them using a tool that he had on hand. The truck now reads the pressure and temperature of all tires on the trailer. The trailer cameras are another issue. My truck has two bluetooth receiver receptacles above the 7-pin connector. Since delivery on November 15th, nobody has been able to identify the cameras or the associated receivers.