On my '09 it did not come with a camera and did not have any cabling or an interface.

My aftermarket head unit knows when I shift into reverse and turns on the camera port. I ran a new RCA cable to my aftermarket camera and plugged it into my head unit. Works well.

 

I think I found my Answer, With a lot of Googling I came upon a Colorado forum post about the same issue with the Base IO3.
Aparently Pins 4 and 5 on Connector X1 (Gray 20 pin) Gray/Yellow + and the White/Light Blue -
Fingers crossed I find the same wiring in my truck once I get to pull it apart.
Unfortunately but Fortunately I will be on vacation Sailing the Caribian for the next ten days. So I will update my findings once I get back.

 

Bon voyage!

 

It's OK I will stay home and plow the snow.

Enjoy!

 

Sorry for the major delay, Did 10 days in Belize, came home for two weeks and then a road trip to Daytona for Bike Week, Hauling the Toy Hauler and Harley. Again, the Camera in this truck is useless except for backing up to the trailer. So the 6 or so times I had to hook up I was doing old school, back up a bit, get out and check, back up again, find you went to far, Rinse & Repeat.....
Today the weather was nice so I took the dash back apart, found that the #5 and #6 wires are the Camera in the 20 pin Grey Radio Harness Connector. #5 Brown w/Yellow Stripe is + and the #6 Bare Wire with Electrical Tape is -
I spliced the RCA connector Bare Wire to the Bare wire and the Insulated Yellow RCA Wire to the Brown w/Yellow Stripe and now the camera works again

 

Did you join pin 4 and 5 together so brown w/yellow and white w/blue?

 

Did you have any issue with the reverse trigger?

 

No Issues. Everything works as it should once I found what wires I needed to tap into.
When I shift to Reverse the Camera lights up on my aftermarket head unit.

 

Mine is working if I go to the camera, but the reverse trigger isn’t working

 

The radio should have a reverse wire that gets a signal just like your reverse lights. when you hook them up, it should work.

 

...just fyi, tayler and briboy haven't logged onto the site in a number of months... you are unlikely to get a response from either of them.

You might find the wiring diagrams/connector pinouts on gmupfitter.com, but you'll have to do some hunting for that info.

 

how long was the retention harness? And it connects straight to rear camera?


How long was that retention harness? And it connected to your radio then to the camera? My oem one looks to have been cut and I don’t want to add another camera just to use it on the radio.

 

..see post #14...

 

Were you able to connect it?

 

see post #17

 

what wire was it?

 

see post #13