Quality Control is why we stopped buying GM (6). 
However that was in 1997 maybe they have improved   . 
  
Our last GM was a Cadillac Catera. 
Center stack replaced week 2 
Sun roof replaced week 6 
New tires/alignment month 6 
Right rear window no up/down month 11 
Trunk no close month 13 
New tires/alignment month 18 
More, but I'm running out of room and the list is almost as long for an S10 before that. 
  
On a happier note  :D  
98 Ranger 1 visit, recalled to lube wipers and replace the Firestones 
05 F250 1 fix, the blue oval was fading 
08 MKX  0  so far 
  
BUT FORD DOES seem to cut a few corners. 
Exploding Pinto's 
Exploding Crown Vick's, you would think they would have remembered the Pinto :rolleyes:  
Firestones 
  
ab