Adding factory parking sensors after delivery?

AZ2500 · March 17, 2021

Hi everyone

I just drove home my 21 Chevy 2500. Very slim pickings out here in AZ, so I couldnt find one with parking sensors. I can find the Factory wiring harness and sensors online. Im wondering if these trucks are pre wired for the sensors, all I would have to do is find the plug for the harness.

Any thoughts?

Nodakrider · March 19, 2025

I see no replies to your post. I too am studying how to add factory park assist to my '22 2500HD. Have all the parts except the stack switch, and I can't find a configuration that works. The other parts are the sensors, harness, and module. I'll likely have to make a harness from the bumper to the cab; possibly from the cab to the front dash depending if GM put a harness there for the option (doubtful).

The center stack has three sets of 3 switches/blanks including the hazard switch. The switches appear to be specifically designed for a left, center, or right side mounting. There's a single plug connection for each of the three switch sets, and they are offset, so they only fit into one area of the mounting plate (left, center, right).

The park assist switch is always on the left side of the hazard switch. I'm studying if I can make a new multi-function switch out of two that would contain the park assist switch to replace the existing switch which only has the descent ctrl switch. I'm thinking this isn't going to be easy; will require some re-pinning of the connector(s). If I get that far, the next step will be getting the module programmed; local dealer already said they won't do it.

If all else fails, I'll be looking for a good aftermarket solution. Appreciate anyone else's insight(s).