How to deactivate parking assist option

Question edited for clarity.
Question moved to model category.

Here are all your fuses

GMC Envoy (2002-2009) fuses and relays

https://fuse-box.info > gmc > gmc-envoy-2002-2009-f...

Here you will find fuse box diagrams of GMC Envoy 2002, 2003, 2004, 2005, 2006, 2007, 2008 and 2009, get information about the location of the fuse panels ...

Mirror Tilt in Reverse Controls
This feature is capable of tilting the passenger side power mirror when the transmission is placed in reverse to provide enhanced visibility during parking or backing maneuvers. This feature is turned OFF or ON through the DIC. The passenger mirror on domestic vehicles can not be changed from the factory setting, but on export vehicles, the passenger mirror position may by changed using the same procedure as the driver mirror. For further information, refer to Driver Personalization in Personalization.

Tilt Mirror In Reverse
Continue with the following steps in order to personalize the tilt mirror in reverse.
Press the Select button in order to enter the menu. The first choice seen is the current setting.
Press the Select button in order to scroll through the following options:
• CURB VIEW: OFF (Default)
• CURB VIEW: PASSENGER
Press the Personalization button in order to advance to the next option.

The shifter cable end is probably broke.

I assume you are talking about the controller on the driver's door. The Driver's Door Module is likely defective. For troubleshooting purposes, you can swap in the passenger side module to verify.

both the rear passenger side wont unlock ???? How many doors are on the passenger side ? Or both back doors don't unlock ? Two relays lock / unlock the back door's Not the lift gate . The BCM controls the relay's . The relay's are located in the rear fuse box . Under back seat .

Go in through the DIC using the buttons on the steering wheel to where it says curb view assist...and turn off.

Sounds like you have a short somewhere in the seat wiring. Check wiring under the seat for shorts.

I researched the maintenance manual. The fuse you need to replace is fuse 20 in the under dash fuse box. It controls side windows, washer motor, rear view dim function, and possible seat memory. There are a couple that link to the mirrors, but this is the one for this problem.