After the GM A-bodies became G-bodies, each division did its own thing when it came to deciding what models stayed in the lineup. Consider the sedans: The Chevy and Buick versions departed after ’83. Pontiac’s G-body Bonneville lasted until 1986, after which it became an H-body. But Oldsmobile, arguably the purveyor of the best A/G-bodies in the corporation, kept its sedans going all the way to 1987. All in all, not a bad run for an Olds model that had flopped (at least in four-door form) when it first appeared in 1978.
When I hear the name Pontiac, I think Bonneville. Oh sure, for most people, it’s GTO or Firebird or Trans Am or Super Duty. But being of the more Broughamtastic persuasion, I prefer the Bonneville, Grand Ville, Grand Le Mans and Grand Prix. That’s just how I roll.