}} The sixth-generation Deville marked a
sea change for General Motors and Cadillac. Under the direction of
Irv Rybicki, GM completely redesigned the DeVille, downsizing the model yet again, foregoing its rear drive configuration, and introducing a new front-drive platform, the
C platform (C-Body)using the first transversely mounted V8 engine in series production. The new C-Body models (along with their
Oldsmobile and
Buick counterparts) were significantly shorter, narrower, lighter and more fuel-efficient than the platform they replaced and were noted for having nearly the same key interior dimensions as their predecessors and a much more nearly flat passenger compartment flooralbeit with thinner seats and dramatically less upper tumblehome, locating windshield as well as side glass closer to passengers. and marketing began in early 1984 for the 1985 model yearwith the front cover of the 1985 Deville brochure calling the sixth generation, the "Cadillac of Tomorrow". Cadillac's
HT-4100 V8 remained the standard engine, mounted transversely and coupled with a
440-T4 automatic. Oldsmobile's 4.3L V6 diesel was optional for 1985, but was dropped the following year. Of GM's front-drive C-Body models, Cadillac was the only line to offer a V8 engine; the others were equipped with a Buick-derived 3.0 or 3.8 V6 engine, or for 1985 only, Oldsmobile's 4.3L V6 diesel engine. Later Deville model years would use larger variants of the Cadillac HT V8. All C-bodies used four-wheel independent suspension. The sixth-generation DeVille was available as a
sedan or
coupe. At introduction, in part due to an extended model year (beginning in April 1984), sales of the new downsized 1985 DeVille and Fleetwood models reached nearly 200,000 units. After the sixth generation's initial development and launch, GM reconsidered the marketplace and provided an extensive 1989 facelift that added considerable lengthand associated weight.
Model year changes: 1986: An
anti-lock braking system, developed by Teves, became available. A 2-position automatic rear-view mirror utilized two electronic 'eyes' and a small motor to dim when headlights appeared from behind. A factory-installed cellular telephone joined the option list at an astonishing $2,850. The standard space-saver spare tire now sat horizontally in the trunk, doing away with the small covered storage cubby in the spare tire well from last year. The optional aluminum wheels had new flush-fitting center caps (last year's design featured exposed capped lugs), and bumper rub strips were changed from black to gray. Borrowed from the front-wheel-drive Fleetwood line, the narrow lower body side molding from the 1985 DeVille was replaced with a considerably wider one, which extended to the rear fenders only on the Fleetwood. The trim surround from the rear window gave the formal appearance of a smaller window opening. Inside, a more tailored look was applied to the seat trim. Coupe de Ville's popular cabriolet option, featuring a padded vinyl covering over the rear half of the roof, was priced at $698. Pricing for the Coupe de Ville was $19,669, with Sedan de Ville at $19,990. The transverse-mounted Cadillac 4.1-liter V-8 continued from the previous year, but with five more horsepower. The 1986 Cadillac used a 90-degree overhead valve V-8 engine with an aluminum block and cast iron heads displacing 249 cu in (4.1 liters) with a bore & stroke: 3.47 x 3.31 in, compression ratio: 8.5:1 making at 4,200 rpm and: 200 lbf·ft (270 N·m) of torgue at 2,200 rpm. The engine had five main bearings, and used hydraulic valve lifters. Also introduced in 1986 was the
Deville Touring Sedan and
Deville Touring Coupe trim levels, which included a rear deck lid spoiler, body-color tail lamp bezels, front air dam with fog lamps, rear seat headrests, leather upholstery, and a performance enhancement package among other features. The package was available for $2,880. In addition, the Touring Coupe featured removable vertical louvers on the trailing edge of the side windows.
1987: 1987 saw a new front-end design including revised cornering lamps in front and one-piece composite headlamps flanked a trapezoid-shaped grille with a bold egg-crate texture. Elongated fender caps were in back - upping the overall length by , but much more dramatic in appearance with new wrap-around tail lamps. This new 3-sided tail lamp style was similar to the tail lamp design used on the 1977 DeVille. Unlike the new one-piece headlamps, the changes to the rear-end in 1987 had little to do with engineering, but rather, feedback from Cadillac's customer base who felt the 1985-86 car looked too short. Although the 1987 revamp was still quite similar to the 1986 model (so much in fact that it still used the previous year's deck lid), the design was more in-tune with the look that traditional Cadillac buyers were used to. Pricing for 1987 included Coupe de Ville at $21,316, and Sedan de Ville at $21,659. Fleetwood d'Elegance at $26,104, and the new Fleetwood Sixty-Special was available for $34,850. The Touring option, priced at $2,880 over DeVille's base cost, also included aluminum wheels mounted on 15-inch Goodyear Eagle GT tires. At the end of the 1988 model year, Cadillac discontinued the slow-selling DeVille-based Touring Coupe and Sedan; the 4-door variant would return in 1992.
1988: To mitigate a nearly $2,000 (~$ in ) price increase, several previously optional items were made standard, including tilt steering column, telescopic steering wheel, power trunk release, split-bench front seating, cruise control, and variable delay windshield wipers. Under the hood was a new 155 hp 4.5 L V8 and heavy-duty battery. Pricing rose to $23,049 for Coupe de Ville, and $23,404 for Sedan de Ville. Cadillac's main competition in this time frame continued to be Lincoln, which, alongside their successful Town Car, was now fielding an all-new front-wheel-drive Continental (based on the
Ford Taurus). The
Continental went into production with a six-cylinder engine so as to be considered a larger front-wheel-drive alternative to the
Acura Legend that appeared in 1986, with a front-wheel-drive platform and a V6 engine.
1989 Facelift: For the 1989 model year, Cadillac introduced a significantly revised Deville, restyled under the direction of
Irv Rybicki with a wheelbase for the Sedan de Ville, increased from along with a heavily revised rear roof and backlight; a rear parcel shelf with storage compartment on four-door models (2-door models retained a narrow carpeted parcel shelf); dent resistant composite (plastic) front fenders, and larger luggage compartment by over the previous model year. Carried over were the 4.5-liter engine, introduced for 1988, dash, and the front doors, on both the coupe and sedan. All Devilles featured a grille, slightly narrower at the top than bottom. The Coupe de Ville and Fleetwood coupe retained the previous year's interior, wheelbase, and doorsall hidden between the new front and rear styling. Previously optional equipment, made standard for 1989, included electrically powered outside mirrors and the AM/FM/cassette player stereo. New options included a driver's side
airbag,
Bose compact disc player, electrically heated windshield, and full reversible carpeted floor mats.
1990: For 1990, DeVille and Fleetwood lost their telescopic steering column, but retained the tilt feature in exchange for an
airbag mounted onto the newly standard leather-trimmed steering wheel. Engine output was up an additional from sequential multi-port fuel injection. 1990 models also received GM's PASS Key theft-deterrent system which used a coded electronic pellet embedded into the ignition key. Other new features for 1990 included a non-illuminated vanity mirror on the driver's visor (a passenger side visor mirror had been standard equipment for decades now), door edge guards (previously optional), "clam shell" front center armrest with storage, and manual seat-back recliners for driver and passenger. In addition to ongoing competition from Lincoln, new competition came from the 1990 debut of
Toyota's
Lexus LS400 and the
Infiniti Q45 from Nissan. The
Acura Legend had also been gaining momentum in the luxury market since its 1986 introduction.
1991: For this model year, Cadillac introduced a 4.9-liter version of its V8
HT (High Technology) engine series, along with revised bumper and body-side moldingsand a revised grille shape, now slightly narrower at the bottom than top, the inverse of the previous iteration's shape. The revised grille held the Cadillac crest and was now attached to the forward edge of the hood, and lifted up along with the hood when raised. The secondary hood release latch was at the bottom of the grille instead of its previous location above the passenger side headlight. In addition to the new engine and minor front-end restyling, several previously optional features became standard this year, including the
anti-lock braking system, accent striping, automatic door locks, Twilight Sentinel headlamp control,
electrochromic inside rear-view mirror, and electric rear window and side mirror defogger. New standard features included rear-seat air conditioning vents, central door unlocking from the driver's door and luggage compartment, sun visors with shaded slide-out extensions, rear window lock-out switch, brake / transmission interlock safety switch, and an oil life indicator through the fuel data center. Other new features included the available remote keyless entry system, and the optional illuminated mirrors now featured a slide switch that offered variable intensity lighting. Also for the 1991 model year, Cadillac introduced the
DeVille Touring Sedan trim level, making 1,500 available beginning in April 1991. The Touring Sedan was offered in five monochromatic paint schemes: Carmine Red; Cotillion White; Black; Dark Slate Gray metallic; and Black Sapphire Metallic. It included larger 16 x 6.5-inch forged aluminum wheels with a wreath and crest center caps, P215/60R16 Goodyear GA all-season radial tires; quicker 17:1 steering ratio; and a model-specific deep tan interiormarketed as
Beechwood, with leather seating areas and revised seat contouring with integral lumbar support; six-way power seats and recliners for driver and passenger; as well as genuine American Walnut wood accents on the doors and instrument panel. Further equipment included a grille-mounted wreath and crest replacing the stand-up hood ornament; side door moldings with "TOURING SEDAN" lettering; body-color, breakaway outside rearview mirrors; body-color door handles; and a cloisonne deck lid lock cover. For 1991–1993, Cadillac offered a "Spring Edition" package for the Sedan de Ville and Coupe de Ville in the U.S. This package included full “Phaeton” cabriolet roof (installed by ASC), body-color door handles, gold trim package, perforated leather seats, digital instrument cluster, security system and “lace” aluminum wheels.
1992: For 1992, the Touring Sedan continued as a limited edition option. Besides the special features included in the initial 1,500 models from 1991, it featured on Touring Sedans, like other DeVille models, the "Symphony Sound" stereo with cassette was standard, while the optional
Delco/
Bose music system was available with cassette or single-slot CD player. Introduced for 1992, speed-sensitive suspension and traction control (both standard on Touring Sedan when introduced in '91) were available at extra cost on DeVille. Approximately 5,300 Touring Sedans were produced for 1992.
1993: The previously optional speed-sensitive suspension,
Computer Command Ride, became standard equipment, and now included a new speed-sensitive steering system. Minor trim changes included black-out trim in the grille (used on the 1992 Touring Sedan), and deletion of the chrome strip from the glass divider on the sedan's rear doors. The 2-door body style had been declining in sales for several years, and as a result, the 1994 redesign went into production solely as a 4-door. Production of the coupe ended in July 1993.
1990-1993 Coupe de Ville production details: Declining popularity led to the discontinuation of GM's last full-size, six passenger two-door with the 1993 model year. (The other two C-body coupes, the Oldsmobile Ninety Eight and Buick Electra, were discontinued at the end of the 1987 model year, while the related
H-body Oldsmobile Eighty Eight and Buick LeSabre coupes were dropped when their sedan counterparts were redesigned for 1992.)
1990: Cadillac made 17,507 coupes. The full-vinyl roof was included in the
Spring Edition package (with 4,413 built), which also included perforated leather seat inserts. The most popular color was white (5,292 made) and least was medium dark gray (193 made). A]l two-doors featured white-wall Michelin tires, and this was the last year for plain wheel covers (2,788 made). 479 two-doors were exported: Canada (383), Japan (81), and Saudi Arabia (15). The 1990 Coupe de Ville was priced at $26,960.
1991: Cadillac manufactured 10,057 examples. Of those, 9,799 featured optional leather (in dark maroon, 19 were made, 11 in leather and 2 in velour). The most popular exterior color was white (2,967 made); least was medium dark gray (58 made). 3,397
Spring Edition were made. 1,122 featured the optional
Bose sound system (752 with cassette, 370 with compact disc). Cadillac produced 164 for export: Canada (126), Japan (23), Persian Gulf countries (5), Puerto Rico and U.S> Virgin Islands (3), and Europe (7). Pricing was $30,205 for Coupe de Ville.
1992: Cadillac made 6,980 examples; the most popular color was white (1,879 made) and least was
Mary Kay Pink (1 made) $30,205 (~$ in ). 2,635 were
Spring Edition models. 89 examples featured the standard painted-roof. 144 were manufactured for export, 129 for Canada and 15 for Japan. The base MSRP was $31,740.
1993: 4,711 were made, all featuring minor trim changes including black-out grille trim. Standard equipment included the full-vinyl roof, with 3,606 made; 1,105 were made with the optional partial vinyl roof ($170); and no paint-roof examples were made. The most popular color was white (1,147 made) and the least made color was dark maroon (24 made). The four wheel choices included standard-design cast aluminum wheels (2,012 cars); optional $235 lace-design aluminum wheel (1,766 cars), optional $235 locking wire wheel disc (749 cars), and the $1,195 chromed aluminum wheel (184 cars). 18 examples featured the no-charge blackwall
Michelin radial tires and 4,693 models featured white-walls. 3,036 had mono-tone paint, and others had a lower body accent color: silver,1,130; dark red, 275; medium gray, 177; and beige, 93. 4,168 had the standard Symphony Sound system, and 543 featured the optional
Bose stereo (310 with cassette, 233 with compact disc). Nearly all examples had leather upholstery (most popular: neutral, with 1,236 made), and 239 featured velour interiors (least made: taupe, 24 made). No export models were made, and 523 of the 4,711 included California emission equipment. The base price of the 1993 Coupe de Ville was $33,915.
Overall sixth-generation production: ==Seventh generation (1994–1999)==