I wasn't a fan of extended warranties until we bought a GM certified 2017 Denali. The sales guy pushed the extended warranty and sold it to us for $2200 at the time of sale which included a 6 year unlimited platinum wheel and tire plan.
I'm used to doing all my own stuff, but don't have the capability to talk to computers on my new one. It PAID off big time! I got 2 front struts replaced for leaking fluid, a seat vibrator replaced, a new fuel fill because the flap spring broke, and a new radio/climate control module. All big ticket items. Funny thing is the salesmanship said that if the radio went out, it would pay for itself.......400 miles before the warranty expired IT DID flake out and was covered.
Depending on the upfront cost, I may consider it again seeing how quality control seems to have gone down the S H I T T E R