OK - I've got to rant.
I have a "97 Yukon with 132000kms 82000 miles.
I have had to replace:alternator, waterpump, fuel pump, Pitman and idler arms, intake manifold gasket, starter, wiper pulse board and heater motor.

The interior has had the drivers seat leather mended and all the interior elastic - visors and seatback nets are shot. I've replaced the driver's door handle interior.

This is a carefully maintained, garage stored vehicle driven by a retired school principal.

I have spent more than 15% of the purchace price in major repairs beyond regular maintainance.

This is a nice vehicle. I like to drive it and it does what I need to do.

BUT I WOULD HAVE A PROBLEM BUYING ANOTHER GMC PRODUCT.

I need reliablity. I need longevity. I could do with less cup holders.

well, most of the problems are time sensitive problems that come with time on any vehicle. The pitman, idler arms are unique to an SUV because they are big and rock more on the road. But the leather, and interior. No excuse.

Yours sounds like it has had much more problems than average.

1999 Yukon. Took delivery new. 171,000 miles. Replace tires twice, brakes once, rear u-joint once, and belt idler once. Rear seat belt gets goofed up if care isn't taken while using. Stored outside. 4wd used often in the winter and off road up-north. That's it. Pulls boat and travel trailer strong. No major issues. Right now, the tow / haul switch appears to be malfunctioning, that is why i am here in this forum.

OK - I've got to rant.
I have a "97 Yukon with 132000kms 82000 miles.
I have had to replace:alternator, waterpump, fuel pump, Pitman and idler arms, intake manifold gasket, starter, wiper pulse board and heater motor.

The interior has had the drivers seat leather mended and all the interior elastic - visors and seatback nets are shot. I've replaced the driver's door handle interior.

This is a carefully maintained, garage stored vehicle driven by a retired school principal.

I have spent more than 15% of the purchace price in major repairs beyond regular maintainance.

This is a nice vehicle. I like to drive it and it does what I need to do.

BUT I WOULD HAVE A PROBLEM BUYING ANOTHER GMC PRODUCT.

I need reliablity. I need longevity. I could do with less cup holders.

Those are all normal repairs for this body style of truck/suv. The body style of suv/truck that followed yours in the 1999/2000 model years eliminated quite a few of the problems you've described, but also came with a whole different list of its own problems. In my own opinion, the GMC yukon became a pretty well-rounded, shaken down vehicle beginning in about 2005. Then they changed the body style and started over making a new list of problems in 2007:banghead: