From
http://www.gaspumpclassics.com/resources/jokes/051802f.cfm
CHEVROLET:
Can Hear Every Valve Rap On Long Extended Trips
Can't Have Everything Vern, YaknowwhatImean?
Cheap, Hardly Efficient, Virtually Runs On Luck Every Time
Cheap Heap Every Valve Rattles, Oil Leaks Every Time
Cracked Heads, Every Valve Rattles, Oil Leaks Every Time
Constantly Having Every Vehicle Recalled Over Lousy Engineering Techniques
GM:
General Maintenance
Great Mistake
Garbage Motors
Generally Miserable
Grossly Misconceived
Gluteus Maximus
GMC:
Garage Man's Companion
Gotta Mechanic Coming?
Generally Mediocre Cars
Get More Chicks
Gets Mechanics Crazy
Gods Mechanical Curse
Got More Crap
Great Mountain Climber
Great Motor Car