Easy steering to left, difficult steering to right

Fuse 44 only does the 'Right Window'. This vehicle has HUNDREDS of fuses!

https://www.autogenius.info/gmc-yukon-2015-2016-fuse-box-diagram/

GMC 2016 Yukon XL Denali Owner's Manual [Page 297]

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GMC 2016 Yukon XL Denali Manual Online: block, Rear Compartment Fuse Block. The Rear Compartment Fuse Block Is Behind The Access Panel On The Left Side Of ...

GMC Sierra Fuse box - imgVEHICLE.com

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GMC Sierra/Sierra Denali is also called VIA Vtrux Truck and Chevrolet Silverado LD. ... A fuse puller is available in the left instrument panel fuse block.

Gmc Yukon Fuse Diagram - [eBook] Free Pdf

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Is the selector stuck in drive? If so you might want to check the neutral switch which is on the steering column inside the truck. It sounds like you might have broken something in the switch. Hope this helps.

Your best bet is to take it to a repair shop.They have a special tool they hook up to check the steering system.You want to start putting parts in without knowing what is actually causing the problem.Some of these trucks also have a rack type system.Hope this has been helpful.Good luck.

Sounds like a faulty blower motor resistor also check wire connector for melting.Location is next to floor on in heat duct towards the left of pass side feet area.

if the hinges are loose making the door difficult to close the brass bushings in the hinge pins are worn
replace the parts to regain a perfect closure to your door
if not replaced the latch will go bad very soon

Turn car off - Remove power steering cap, and turn streering wheel hard right or left and fluid should pour out (cover surroundings with rags.) If so, check your power steering pump.

I'm not sure if that truck has rack and pinion steering, or a steering sector. In either case, it sounds like you have stuck valve and the hydraulic pressure is fighting you, instead of helping you. When ever you turn the steering wheel the valve is supposed to move and direct the hydraulic oil pressure to help you steer. The valve is built into the sector or the rack and pinion, you may have to replace the assembly. There are companies that recondition those items so you might want to shop around.

These trucks have a lot of noises from the Intermediate Steering Shaft. It doesnt really hurt anything, its just annoying. I'm sure your dealer has 20 in stock.

It is either under the driver side dash area between the brake pedal the door. Or under the hood near the left or right fender

Sounds like you may have a problem with the power steering pump. Notorious for these pumps shaft to break, causing "armstrong" power steering. As far as the 4wd low problem, ick.