2009 Tahoe how do you replace the back up camera?

Question edited for clarity and typos.
Question moved to model category.

Others report the same issue.

https://www.google.com/search?q=2009+Tahoe.+The+rear+lift+gate+open+on+its+own

Chevrolet Tahoe Powertrain Control Module Replacement Cost

https://repairpal.com > estimator > powertrain-control-...
The average cost for a Chevrolet Tahoe powertrain control module replacement is between $448 and $514. Labor costs are estimated between $96 and $121 while ..

With an assistant, release the parking brake cable tension by pulling straight back on the intermediate cable at the cable-to-cable union until the parking brake control sector (of the brake pedal) rotates to a stop. then insert a 4mm retainer pin in the parking brake control pedal to keep it from retracting on you.
Disconnect the cable running from the brake pedal to the cable-to-cable union underneath the car.
Then replace the damaged or severed cable that controls either the left or right rear parking brake shoes.

disconnect the neg on battery for 30 seconds then put back on batt and tighten up. Do not take off positive. GOOD LUCK..........

Could be a vapor lock "air trapped" in the cooling system. You will need bring it up to heat leave the refill cap off the overflow jug let it cycle the air out add anti-freeze as needed

Most common failure (other than fuse) is the switch at the brake pedal which kicks it out of cruise. Switch must be in correct position and adjusted such that it is depressed fully when brake pedal is up.

I googled a bit and found a forum that addresses your concern.

http://www.tahoeforum.com/showthread.php?t=2900

Scroll through it about half way and it seems like you have an answer, but I think a dealership would need to have a look too.

Hope this helps.

some batteries now are located in cubbyholes like the front fenderwell and to get acess the inner fender skirting and braces need removed(as well as the whole tire)..remember to connect the ground cable last if possible..parts stores have step-by-step on most vehicles..

TAKE AND DISCONNECT BOTH BATTERY CABLES FROM THE BATTERY AND HOLD THEM TOGETHER FOR TEN MINUTES OR PUT A JUMPER WIRE ON THEM (TAKE BOTH CABLE OFF)

I would recommend not doing it...