Here's my picks
In no specific order.
1988-94 Silverado/Sierra.
I love them because they're wierd, especially for a full size domestic truck.
Note the "crescent moon" guages on the 88-90 models.
Out of an '89 Silverado 1500. The 88-90s never had a tach, which is really wierd for a truck.
Digital manual climate control and two part radio design.
Overall layout. How very '80s.
This is out of a '94 Suburban Silverado. Note the "regular" guages. Now with tachometer!!
Uhh let's see, what else do I particularly like?
'08 CTS.
Probably one of GM's best interiors. Ever.
84-89 Corvette. How very '80s. Love the digital guages with bar graphs for vehicle and engine speed and the changable secondary guages.
1993-95 STS/ETC. It was such a drastic change from the previous Caddys...looked and felt Italian.
I'll have more later. It's bedtime now.