Cadillac Service Repair Manuals

"Best of all . . . it's a Cadillac," declared the 1982 full-line catalog. Perhaps so, but long-time Caddy fans must have been startled by the company's latest offering: the four-cylinder Cimarron, with manual floor shift yet. Introduced several years earlier than originally planned, this drastically different breed of luxury was intended to give Cadillac a toehold in the rising market for smaller, fuel-efficient designs.

On all except Cimarron, a new lightweight Cadillac 249 cu. in. (4.1 liter) HT-4100 V-8 engine with Digital Fuel Injection (DFI) became standard, coupled to overdrive automatic transmission. The Oldsmobile-built diesel 5.7-liter V-8 was also available. So was a Buick 4.1-liter V-6, offered as a credit option.

A new Fuel Data Panel (standard with the HT-4100 engine) displayed instantaneous MPG, average MPG, estimated driving range, and amount of fuel used. Electronic Climate Control had a new outside temperature display, available by touching a button. New reminder chimes used different tone patterns to warn of unbuckled seatbelts, headlamps left on, or key in ignition.

Body mounts, springs and shocks were revised to give a softer ride. All Cadillacs except Cimarron had standard

All except Seville with cloth interior had front seatback map pockets. New to the full-size option list was a remote-locking fuel filler door. The HT-4100 V-8 engine had an aluminum block for light weight and chrome-plated valve covers for looks. During manufacture, it received individually balanced components and automatic in-process gauging, and had to pass a 78-step "stress test" before installation. Features added to improve fuel economy included fast-burn compact combustion chambers, digital fuel injection, and bearings designed for low-drag lubricants.

Standard with the HT-4100 engine was four-speed overdrive automatic transmission, helping to improve mileage further. EPA estimates reached 26 highway/17 city for Fleetwood/DeVille models, 27 highway for Seville/Eldorado. A Fuel Data Panel computed average MPG on the road. On-board computer diagnostics warned of engine problems and helped the mechanic locate the trouble quickly. The digital fuel injection included automatic altitude compensation, determined by a microprocessor, plus constant idle speed. The HT-4100 replaced the troublesome V8-6-4 modular-displacement engine, helping to boost both gas mileage and sales. That new engine was installed in some 90 percent of Sevilles, DeVilles and Eldorados. An HT-4100 nameplate went on front fenders of all models with that engine under the hood.




EngineV8 250 (4.1L)V6 252cc (4.1L)V8 350cc (5.7L) DieselV8 368cc (6.0L)
Crankcase4 qt4 qt64 qt
Crankcase with new filter5 qt5 qt75 qt
AutomaticTransmission after draining8 pt8 pt6 pt8 pt
Drive Axle4.25 or 3.25 pt4.25 or 3.25 pt4.25 or 3.25 pt4.25 pt
Fuel tank25 or 21 gal(US)25 gal(US)27 gal (US)25 gal(US)
Cooling with heater10.8 or 6.25 qt18.2 qt23.7 qt21.4 qt
Cooling with A/C10.8 or 6.25 qt18.2 qt23.7 qt21.4 qt
Heavy duty CoolingNANANANA


Engine V.I.N Code8469
Engine typeV8-250cc (4.1L)V6-252cc(4.1L)V8-368cc(6.0L)V8-368cc(6.0L)
Fuel deliveryDFI4 bbl4 bblDFI
Original Spark plugR43NTS6R45TSXR45NSXR45NAX
Gap0.060 in.0.060 in0.060 in0.060 in
Ignition timing (BTDC)See underhood stickerSee underhood sticker18°See underhood sticker
Intake valve opens (BTDC)37161111
Fuel pump pressure12 - 144¼ to 5¾ psi5½ to 6½ psi12 - 14 min.
Idle speed450 rpm550 rpm in Drive; A/C 680575 rpm450 rpm


Part #11029211101040110104611010501101091
Field current @ 12 V4 - 4.54 - 4.54 - 4.54 - 4.54 - 4.5
Output63 amps70 amps80 amps100 amps100 amps
RegulatorSolid stateSolid stateSolid stateSolid stateSolid state
Volts @ 75°13.8 - 14.813.8 - 14.813.8 - 14.813.8 - 14.813.8 - 14.8


EngineV6-252cc (4.1L)V8-250cc (4.1L)V8-350cc (5.7L)V8-368cc (6.0L)V8-350cc (5.7L)Diesel
Battery Ampere Hour Capacity540 amps cold cranking power @ 0°F
Battery Volts1212121212
Battery Terminal GroundedNeg.Neg.Neg.Neg.Neg.
Starter, Lock Test, AmpsNot Recommended
Starter, Lock Test, Volts
Starter, Lock Test, Torque
Starter, No-Lead Test, Amps65 - 9565 - 9565 - 9565 - 9540 - 140
Starter, No-Lead Test, Volts99999
Starter, No-Lead Test, RPM7000 - 105007000 - 105007000 - 105007000 - 105008000 - 13000
Starter, Brush Spring Tension35 oz. min.35 oz. min.35 oz. min.35 oz. min.35 oz. min.


Engine V.I.N Code48N69
Engine typeV6-252cc(4.1L)V8-250cc(4.1L)V8-350cc(5.7L)V8-368cc(6.0L)V8-368cc(6.0L)
Fuel delivery4 bblDFIDiesel4 bblDFI
Bore x Stoke3.965 x 3.4003.465 x 3.4004.057 x 3.3853.800 x 4.0603.800 x 4.060
Compression Ratio8.00:18.00:122.5:18.20:18.20:1
Oil pressure35 psi30 psi40 psi35 psi35 psi


Engine typeV8-250cc(4.1L)V6-252cc(4.1L)V8-350cc(5.7L) dieselV8-368cc(6.0L)
Main Brg Journal Dia.2.6402.49952.9993 - 3.00033.250
Main Brg Oil Clearance0.0004 - 0.00300.0003 - 0.00180.0005 - 0.0021(No. 5: 0.0015 - 0.0031in)0.0001 - 0.0026
Shaft End-play0.001 - 0.0070.003 - 0.0090.004 - 0.0140.002 - 0.012
Thrust on No.3233


Engine typeV8-250cc(4.1L)V6-252cc(4.1L)V8-350cc(5.7L) dieselV8-368cc(6.0L)
Journal Dia.1.93002.2487 - 2.24952.1238 - 2.12482.5000
Oil Clearance0.0005 - 0.00280.0005 - 0.00260.0005 - 0.00260.0005 - 0.0028
Side Clearance0.008 - 0.0200.006 - 0.0230.006 - 0.0200.008 - 0.020


Engine typeV6-252cc (4.1L)V8-250cc(4.1L)V8-350cc(5.7L)V8-350cc(5.7L) DieselV8-368cc(6.0L)
Piston-Bore Clearance0.0013 - 0.00350.0010 - 0.00180.0010 - 0.00200.0005 - 0.00060.0006 - 0.0014
Ring Side Clearance: Top Compression0.0030 - 0.00500.0016 - 0.00370.0020 - 0.00400.005 - 0.0070.0017 - 0.0040
Ring Side Clearance: Bottom Compression0.0030 - 0.00500.0016 - 0.00370.0020 - 0.00400.0018 - 0.00380.0017 - 0.0040
Ring Side Clearance: Oil Control0.0035 max.None(side sealing)0.0006 - 0.00960.0078 max.None(side sealing)
Ring Gap: Top Compression0.013 - 0.0230.009 - 0.0200.010 - 0.0230.015 - 0.0250.013 - 0.023
Ring Gap: Bottom Compression0.013 - 0.0230.009 - 0.0200.010 - 0.0230.015 - 0.0250.013 - 0.023
Ring Gap: Oil Control0.015 - 0.0350.010 - 0.0500.015 - 0.0550.015 - 0.0550.015 - 0.055


Engine typeV8-250cc(4.1L)V6-252cc (4.1L)V8-350cc(5.7L) DieselV8-368cc(6.0L)
Seat Angle45°45°intake: 45°; exhaust: 31°45°
Face Angle44°44°intake: 44°; exhaust: 30°44°
Spring Test Pressure182 lb @ 1.28"164 lb @ 1.34"(exhaust: 182 @ 1.34")210 lb @ 1.30"160 lb @ 1.50"
Spring Installed Height1-43/64"1-11/32"1-43/64"1-15/32"
Stem-to-Guide Clearance: Intake0.0010 - 0.00300.0015 - 0.00350.0010 - 0.00270.0010 - 0.0027
Stem-to-Guide Clearance: Exhaust0.0010 - 0.00300.0015 - 0.00320.0015 - 0.00320.0010 - 0.0027
Stem Diameter: Intake0.3413 - 0.34200.34120.34290.3417
Stem Diameter: Exhaust0.3411 - 180.34120.34240.3417


Engine typeV6-252cc (4.1L)V8-250cc(4.1L)V8-350cc(5.7L)V8-350cc(5.7L) DieselV8-368cc(6.0L)
Cyl. Head Bolts80 ft.lb90 ft. lb130 ft. lb130 ft. lb95 ft. lb
Rod Brg Bolts40 ft.lb20 ft. lb42 ft. lb42 ft. lb40 ft. lb
Main Brg Bolts100 ft.lb85 ft. lb80 ft. lb(No. 5: 120 ft. lb)120 ft. lb90 ft. lb
Crankshaft Damper or Pulley Bolt225 ft.lbPress fit310 ft. lb200 - 310 ft. lbPress fit
Flywheel to Crankshaft Bolts60 ft.lb20 ft. lb60 ft. lb60 ft. lb75 ft. lb
Intake Manifold45 ft.lb22 ft. lb40 ft. lb40 ft. lb30 ft. lb
Exhaust Manifold25 ft.lb20 ft. lb25 ft. lb25 ft. lblong bolts: 35 ft. lb;short bolts: 12 ft. lb


Carb ID17082246 (M4ME)17082247 (M4ME)
Float Level3/8 in13/32 in
Air Valve Spring5/8 turn5/8 turn
Pump Rodfixedfixed
Primary Vacuum Break0.149 in0.164 in
Secondary Vacuum Break0.149 in 0.136 in
Choke Rod0.139 in0.139 in
Choke Unloader0.195 in0.243 in
Fast Idle SpeedSee underhood decal


Feature Eldorado Full size Seville
Caster Range 1½°P - 3½°P 2½°P - 3½°P 1½°P - 3½°P
Caster Pref. 2½°P 3°P 2½°P
Camber LH wheel Range 3/16°N - 3/16°P 3/32°P to 57/64°P 3/16°N to 3/16°P
Camber LH wheel Pref. ½°
Camber RH wheel Range 3/16°N - 3/16°P 3/32°P to 57/64°P 3/16°N to 3/16°P
Camber RH wheel Pref. ½°
Toe-In 1/8°P to 1/8°P 18 in. 18 in.P to 18 in.P
Steering Axis Inclination11° 10-19/32° 11°


1982 Cadillac Notes

Cimarron8,366 (decreased 9,236)
Fleetwood/de Ville series137,600 (decreased 12,115)
Eldorado52,018 (decreased 8,625)
Seville19,998 (decreased 8,633)
Series 751,450 (increased 250)

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