blinker
 

just purchased my 2022 silverado 2500 about a month ago..when I am at a stop light with blinker on everything is fine until I have been at light about 2 minutes ..blinker starts flashing very fast..is this normal??

No this is not normal. Does it do this for both left and right? When it starts to do this, look at the front and back to see if the bulb is flashing. It could be as simple as simple as a bad bulb or a bad flasher.;

both bulbs are flashing

Does it do this for both the left and the right?

Only noticed it with left blinker so far

Just cranked truck to check right blinker and does it on that side also

I am wondering if it is like some of my vehicles, where if the blinker is on for about 2 minutes, it will start a chime to let you know the blinker is still on... i.e. maybe this is intentional to "alert" you that you left the blinker on, in case you did a lane change and forgot to turn it back off...

trailer lights
 

another question ..just today I was hooking up my camper to truck and no trailer lights, what could be problem? Fuses appear to be ok...my son in law has a multi meter and he says no power getting to trailer plug in

You may need to verify that your vehicle has this option. Sometimes it has to be installed at a later date. You need to get underneath the vehicle and verify there is wiring actually connected to your trailer light socket on the back side of said socket.