Upfitter Switch Question

paauto · December 3, 2023

I am about to install the upfitter auxilliary switch kit on my 2023 Sierra 2500. Do the switches recall their status (on or off) from the last time the truck was shut off? I plan on putting a dash cam in the truck and would like to power it from one of the aux switches. Do i need to turn the switch on everytime I start the truck or will it remember that it was on when i i shut it down?

thanks.

Another JR · December 3, 2023

I bought the kit with my 2021 but haven’t installed it. The wiring diagram shows the switches as plain lighted switches controlling relays, but with the switch supply voltage only on when the ignition switch is in the run position. If you leave a switch on at shutdown the relay will open (shut off power). However, the relay will close again when you start up the truck.

paauto · December 4, 2023

Thanks! I was checking the switches out today. When pressed, they don't seem to physically "latch", but seem to send a signal to the BCM. I guess i'll have to get it installed and see how they work when the ignition is cycled on & off & on again. Hoping that they will remember their previous state when cycled back on and don't default to "off".

Another JR · December 4, 2023

You could probably test it prior to installation by just hooking up to a battery.

Diver6 · December 10, 2023

Yes they stay latched after a key cycle. There is a fuse move you can do that keeps the powered even if the key/button is off.

Another JR · December 10, 2023

I remembered to check today. My switches in my 2021 push on and stay slightly depressed relative to the off position, so they stay in the on position even if power to the switch goes off.

paauto · December 11, 2023

Thank you Another JR! Finishing up my install this week. I went a tad overboard and removed teh entire interior of the truck. Seats, carpet, center console, etc. Putting a new stereo in and decided to DynaMat the doors, floor, back wall....