This page features the yearly changes to Buick's one-time top-line model, from it's 1975 debut to the final 2005 model.
In 1975, Park Avenue was used as an uplevel option package, which was carried over into 1976, it's final year in this form before GM downsized them in 1977.
In the fall of 1976, GM unveiled it's newly downsized 1977 full-size cars. Every large car, from a basic Chevrolet Impala to a luxurious Cadillac Fleetwood was shrunk, on average losing 1,000 lbs of body weight & overall length & width, although they were as roomy as their 1976 counterparts.
In 1980, GM full-sizers recieved some exterior & interior freshening. Gone were the days of the monster 455 V8's, replaced by 350 & 403's in 1977. After 1980, the 403 was dropped in favor of smaller 307's & even 4.1L V6's. GM's 350 diesel was even offered in the late 70's & early 80's.
For 1985, GM went on another full-size downsizing binge. The new Park Avenue's (and Olds 98/Cadillac Deville-Fleetwoods) switched to fwd, although some rwd's were still available, like the Lesabre/Delta 88/Caprice/Parisienne & the Cadillac Fleetwood Brougham, they'd hold on well into the later 80's & 1990's, depending on the model.
In 1991, the Park Avenue took on a sleeker, more aerodynamic format. I found these models resembled a Jaguar in some ways. The top model was named Park Avenue Ultra, a name introduced for 1989, and Park Avenue became the base model. A supercharged 3.8 V6 became available in the Ultra only.
Fpr 1997, the Park Avenue was again redesigned & placed on a different platform, unlike in prior years it shared the same basic one with the Olds 98 & Cadillac Deville. This time it was an exclusive, but still promised soothing Buick luxury. Model lineup remained the same, base Park Avenue & Ultra, with the same engine setup, 3800 V6 for base & supercharged in the Ultra. For 2006, the Park Avenue name was retired & a new model, the Lucerne, was introduced in it's place.
See the next page for the Park Avenue's 2006 replacement...