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1991 CADILLAC DEVILLE Cadillac Index

Last year the deVille series was a sedan and a coupe, but this year there was also a touring sedan.

All three had the new 4.9-liter V-8 engine which was linked to the 4T60-E electronically controlled four-speed automatic transmission with overdrive.

An improved version of the Teves anti-lock braking system was also now standard equipment.

Other new standard features of the deVille series included structural enhancements for improved crash-worthiness, 15-inch cast aluminum wheels, and a larger, higher capacity front braking system.

Computer Command Ride was optional and offered three damping modes to enhance ride and handling characteristics.

Formerly optional, but made standard equipment in 1991 were side and decklid accent striping, rear window defoger with heated outside mirrors.

Twilight Sentinel and automatic door locks including a new central door unlocking system.

Appearaonce-wise, the deVille featured a new power dome hood, wider grille with grid design and integral Cadillac script, re­vised front bumper guards and rear bumper rub strip, and a 4.9 Port Fuel Injection V8 decklid emblem.

Inside, EZ-Kool solar-control glass for all windows was made standard, Es­teem seat cloth replaced the previously used Primavera, and an engine oil life indicator became standard.

A Pha­eton roof was optional for the Sedan deVille while both a Cold Weather Package and a Security Package were also new options. The former included a heated windshield sys­tem and engine block heater while the latter featured re­mote keyless entry. illuminated entry and a theft-deterrent system.

The 1991 Cadillac had a 17-symbol vehicle iden­tification number (VIN) stamped on a metal tag attached to the upper left surface of the cowl visible through the wind­shield. The code was as follows:
The first digit "1," represented the manufacturing country (United States)
The second, "G" represented General Motors.
The third, "6," represented Ca­dillac
The fourth and fifth represented the car line/series, C/D=deVille
Digit six represents the body style: 1=two-door coupe/sedan, 5=four-door sedan
Digit seven identities the restraint code: 1=active (manual) belts, 3=active (manual) belts w/driver's side airbag, and 4=passive (automatic) belts.
The eighth digit identifies the engine: "B"=­L26 4.9L V-8
A check digit follows.
The 10th digit represents the model year, "M" for 1991.
The eleventh digit represents the assembly plant.
The remaining six digits identify the produc­tion sequence number.

Type90-degree overhead valve V-8
BlockAluminum block
Cylinderscast iron cylinder liners
Headcast iron cylinder heads
Displacement300 cu. in. (4.9 liters)
Bore & Stroke3.62 x 3.62 in.
Compression ratio9.5:1
Bhp200@4100 rpm
Torque275 lb.-ft.©3000 rpm
LiftersRoller hydraulic valve lifters
InjectionSequential port fuel injection


Wheelbase110.8 in (2814 mm)113.8 in. (2891 mm)
Overall Length202.6 in. (5146 mm)205.6 in. (5222 mm)
Height54.9 in. (1394 mm)55.2 in. (1402 mm)
Width73.4 in. (1864 mm)73.4 in. (1864 mm)
Front Tread60.3 in. (1632 mm)60.3 in. (1532 mm)
RearTread59.8 in. (1519 mm)59.8 in. (1519 mm)
Standard TiresMichelin P205/70R15

Transmission4T60-E electronically controlled four-speed automatic with overdrive (includes viscous converter clutch)
SteeringPower-assisted rack-and-pinion
Front Suspensionindepen­dent Macpherson strut with coil springs. strut-type shock absorbers~integrai-in strut and stabilizer bar
Rear Suspensionfully independent with coil springs. automatic level control and struttype superlift shock absorbers and no rear stabilizer
BrakesPower assisted front disc/rear drum w/Teves anti-lock braking system
Body Constructionintegral body-frame
Fuel Tank18.0 gal.

Coupe DeVille Spring Edition Pkg. (incl. cast alum wheels, front & rear carpeted floor mats, illuminated entry, leather seating, illuminated vanity mirrors, six-way power passenger seat, full cabriolet roof, and gold ornamentation)$1,481.
Opt. Pkg. B$320. Opt. Pkg. C$586.
Opt. Pkg. D$1045. Security Pkg.$385.
Cold Weather Pkg$369. Digital Instrument Cluster$250.
Illuminat­ed Entry Syst.$90. Auto Day/Night Mirror$110.
Astroroof$1550 Coachbuliders Pkg. (Sedan deVille)$1,000.
Gold Ornamentation Pkg.$395. H.D. Livery Pkg. (Sedan deVille)$1,000.
Leather Seating$570. Firemist Paint$240.
Lower Accent Firemist Paint$50. Two-tone Paint (Sedan deVille)$225.
Delco-Bose Sound Syst.$575 Delco-Bose Sound Syst. w/CD$872.
Formal Cabriolet Roof (Coupe deVille)$925. Full Cabriolet Roof (Coupe deVille)$1095.
Phaeton Roof (Sedan deVille)$1095. Locking Wire Wheel Discs$235.
Lace Cast Aluminum Wheels$235. FX3 Comput­er Command Ride$380

Cadillac's model year production totaled 220,284 compared with 268,698 the year previous.
Based on sales at 213, 288 automobiles in 1991 (vs. 258,168 the year before).
Cadillac's share of the U.S. market was 2.61 percent com­pared with 2.78 percent in 1990.

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NEXT: History of the 1991 Cadillac Allante
NEXT: History of the 1991 Cadillac Brougham
NEXT: History of the 1991 Cadillac DeVille
NEXT: History of the 1991 Cadillac Eldorado
NEXT: History of the 1991 Cadillac Fleetwood
NEXT: History of the 1991 Cadillac Seville
NEXT: History of the 1991 Cadillac Overview
NEXT: History of the 1992 Cadillac

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