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1991 Cadillac Eldorado CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Cadillac REPAIR SHOPS DON'T WANT YOU TO KNOW
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- Component Locations
- Wiring Diagrams
- Technical Service Bulletins
- Specifications
- A/C & Heater Service
- Brake Service
- Fuel Filter Replacement
- Driveline, U-Joint & CV Axles Replacement
- Starter & Alternator Replacement
- Maintenance Lamp Reset
- Radiator & Hose Replacement
- Serpentine Belt Service

A/C & HEATER SERVICE PROCEDURES FOR 1991 Cadillac Eldorado AUTOMOBILES
A/C & Cooling System Maintenance -> General Motors Corp. -> Allante & 1990-92 Fleetwood & 1990-2002 Cadillac DeVille, Eldorado & Seville
Vehicle: 1991 Cadillac Eldorado 4.9 V8 GAS
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BRAKE SERVICE PROCEDURES FOR 1991 Cadillac Eldorado AUTOMOBILES
ANTI-LOCK BRAKES, GENERAL MOTORS -> 1991 Caprice, Custom Cruiser, Eldorado, Reatta, Riviera, Roadmaster, Seville, Toronado & Trofeo (Bosch 2 U Type) -> DESCRIPTION
Vehicle: 1991 Cadillac Eldorado 4.9 V8 GAS
The function of the Anti-Lock Brake System (ABS) is to minimize wheel lockup during heavy braking on most road surfaces. The system performs this function by monitoring wheel sp...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 1991 Cadillac Eldorado AUTOMOBILES
General Motors Corp./Saturn Passenger Cars -> Component Locations -> Reatta, Riviera (1983-93), Allante, Eldorado (1986-02), Seville (1986-97) & Toronado (1986-92) & Trofeo
Vehicle: 1991 Cadillac Eldorado 4.9 V8 GAS
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 1991 Cadillac Eldorado AUTOMOBILES
CV AXLE SHAFT, Replace
Vehicle: 1991 Cadillac Eldorado 4.9 V8 GAS
- Remove hub nut, then raise and support vehicle and remove wheel and tire assembly.
- Remove brake caliper and rotor assembly.
- Remove stabilizer link or stabilizer bar from control arm.
- Remove tie rod end at steering knuckle, then remove lower ball joint stud at steering knuckle.
- Remove axle from transaxle using a prybar or screwdriver and a wood block as a fulcrum to protect case co...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 1991 Cadillac Eldorado AUTOMOBILES
Starter, Replace
Vehicle: 1991 Cadillac Eldorado 4.9 V8 GAS
If shims are required between starter and engine block, they should be placed in original position during installation. If starter is noisy during cranking, remove double .015 inch shim or add .015 inch shim at outer bolt only. If high pitched whine is observed after engine starts, ...
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MAINTENANCE LAMP RESET PROCEDURES FOR 1991 Cadillac Eldorado AUTOMOBILES
General Motors Corp./Saturn Cars -> Traction Control System (TCS) Warning Lamp ->
Vehicle: 1991 Cadillac Eldorado 4.9 V8 GAS
This lamp should light for a approximately 6-8 seconds when the ignition is turned on as a bulb check. If the warni...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 1991 Cadillac Eldorado AUTOMOBILES
Heater Hose, Replace -> Inlet -> Outlet
Vehicle: 1991 Cadillac Eldorado 4.9 V8 GAS
Inlet
- Drain coolant into a suitable container.
- Loosen hose clamp connecting hose to heater core inlet tube.
- Loosen hose clamp connecting hose to water pump bypass tube.
- Remove hose from vehicle.
- Reverse procedure t...
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SERPENTINE BELT SERVICE PROCEDURES FOR 1991 Cadillac Eldorado AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 1991 Cadillac Eldorado 4.9 V8 GAS
- Disable airbag system.
- Rotate belt tensioner upward from drive bel...
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COMPONENT LOCATION DIAGRAMS FOR 1991 Cadillac Eldorado AUTOMOBILES
Component location diagrams for most 1991 Cadillac Eldorado cars and light trucks sold in the U.S. from 1990+.
![]() Components on diagram: |
![]() Components on diagram: |
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WIRING DIAGRAMS FOR 1991 Cadillac Eldorado AUTOMOBILES
OEM drawn wiring diagrams for most 1991 Cadillac Eldorado cars and light trucks sold in the U.S.
![]() Components on diagram: |
![]() Components on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 1991 Cadillac Eldorado AUTOMOBILES
OEM TSB listings for most 1991 Cadillac Eldorado cars and light trucks sold in the U.S. from 1985+.
Document: Car and Truck Fix It Right the First Time Issues Vehicle: 1991 Cadillac Eldorado 4.9 V8 GAS Auto Systems: |
Document: GM TIRE WARRANTY PROGRAM CLAIMS GOODWILL GUIDELINES - REVISED Vehicle: 1991 Cadillac Eldorado 4.9 V8 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 1991 Cadillac Eldorado AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 1991 Cadillac Eldorado cars and light trucks sold in the U.S. and Canada from 1970+.
- Brake caliper mounting bolt torque
- Brake drum runout, machining, & discard specs
- Minimum brake lining thickness.
- Brake rotor runout, parallelism, machining, discard, & finish specs
A/C SYSTEM SPECIFICATIONS: Air conditioning refrigerant capacity and type as well as lubricant capacity for most 1991 Cadillac Eldorado cars and light trucks sold in the U.S. and Canada from 1980+.
- Refrigerant capacity & type, compressor oil viscosity, total system oil capacity & compressor clutch gap
COOLING SYSTEM BLEED: Cooling system bleeder valve identification, bleeder type and bleed procedures for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1986+.
PREVENTIVE MAINTENANCE: Preventive maintenance recommendations and required services for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1980+. Includes severe and routine service schedules
QUICK-LUBE and ILLUSTRATIONS: Fluid recommendations, capacities, drain plug torques, tire data, and severe service recommended preventive maintenance schedules. Information covers most 1991 Cadillac Eldorado cars and light trucks sold in the U.S. and Canada from 1980+. Engine and chassis service images.
- Automatic transmission/transaxles capacities, lubricant recommendations
- Differential/final drive capacities, lube recommendations, grades, & viscosities
- Final drive fill & drain plug torques
- Number of lubrication fittings & plugs
- Power steering, brake, & clutch fluid recommendations
- Manual transmission/transaxle capacities, lube recommendations, grades, & viscosities
- Number of lubrication fittings & plugs
- Power steering, brake, & clutch fluid recommendations
- Engine oil capacities, API grade recommendations, SAE viscosity recommendations, drain plug torque
- Severe service maintenance & interval recommendations
- Tire sizes, wheel nut/bolt torque, pressures & rim sizes
- Transfer case capacities, lube recommendations, grades, & viscosities
TUNE-UP & DRIVEABILITY SPECIFICATIONS: Most tune-up specifications for most 1991 Cadillac Eldorado cars and light trucks sold in the U.S. and Canada from 1980+
- Airflow sensor electrical specifications
- Tensioning specifications for systems with automatic tensioners
- Barometric pressure sensor specs
- Battery group number and cranking performance
- Crankshaft & camshaft position sensor resistance
- Engine compression pressures
- Coolant temperature sensor specs
- Computer advance.
- Diesel fuel temperature sensor resistance.
- Distributor advance specifications
- Ignition pickup coil resistance
- Exhaust gas recirculation temperature sensor resistance
- Engine fastener torque values
- Firing order diagrams
- Fuel system pressures
- Generator (alternator) specs
- Intake air temperature sensor specs
- Ignition coil specifications
- Fuel injector resistance
- Engine idle speeds
- Knock sensor resistance
- Manifold absolute pressure sensor specs
- Mixture control solenoid resistance
- Voltage regulator specs
- Spark plug applications & gaps
- Starter motor electrical specs.
- Tensioning specifications for systems without automatic tensioners
- Throttle body temperature sensor resistance
- Ignition timing in degrees at rpm
- Transmission oil temperature sensor resistance
- Throttle position sensor specs
- Vacuum sensor valve specs
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