Starting with the original starter I am now on the third one.
The front and rear breaks never worked properly, i.e. pulling, extreme vibration, extreme front pad wear, only 15% wear on original rear shoes after 84,000. (dealer says this is OK!)
Air-conditioning leaking under dash.
Automatic door locks fail when wet (rain, or car-wash).
Catalytic converters need replacing after 84K miles. (Manufacturer Warranty void after 80K miles)
This is a roomy solid ride.
The towing package that comes with is performing well.
Passes everything except the gas station, but knew that before I bought.
The 454 cubic inch engine has enough power towing 27', 7,000lbs travel trailer.
You problem is the 454. Next Chevy, go with the bread and butter of Chevy- 350 5.7. Brother, mine has over 150,000 miles and is as powerful and quiet as any new car (it powers a k1500 Suburban).