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1991 Buick Park Avenue CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Buick 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 Buick Park Avenue AUTOMOBILES
A/C & Cooling System Maintenance -> General Motors Corp. -> 1990-2002 Buick Electra, LeSabre & Park Avenue, Oldsmobile Eighty-Eight, LSS, Ninety-Eight & Regency & Pontiac Bonneville
Vehicle: 1991 Buick Park Avenue Ultra 3.8 V6 GAS
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BRAKE SERVICE PROCEDURES FOR 1991 Buick Park Avenue AUTOMOBILES
DISC BRAKES, GENERAL MOTORS -> General Information -> TESTING PROPORTIONING VALVE
Vehicle: 1991 Buick Park Avenue Ultra 3.8 V6 GAS
When a premature rear wheel slide is obtained on a brake application, it usually is an indication that the fluid pressure to the rear wheels is above the 50% reduction ratio for the rear line pressure and that malfunction has occurred within the proportioning valve.
To test the valve, install gauge set shown in Fig. in brake line between master cylinder and proportioning valve, and at outpu...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 1991 Buick Park Avenue AUTOMOBILES
General Motors Corp./Saturn Passenger Cars -> Fuel Pressure Relief -> Except Aveo, LaCrosse, LeMans (1988-93), Malibu & Malibu Maxx (2004-05), Metro, Nova, Prizm, Spectrum & Storm -> Engine Fuel Pressure Service Port -> Engines Less Fuel Pressure Service Port
Vehicle: 1991 Buick Park Avenue 3.8 V6 GAS
Do not smoke or allow an open flame of any type when working on or near any fuel system related components. The highly flammable vapor mixtures may ignite, resulting in serious personal injury.
Prior to disconnecting fuel lines, the fuel system pressure must be relieved to prevent accidental spray of fuel.
After the battery has been disconnected and reconnected, some abnormal driveability symptoms may occur. The vehicle may need to be driven while the vehicle relearns its adaptive strateg...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 1991 Buick Park Avenue AUTOMOBILES
CV AXLE SHAFT, Replace
Vehicle: 1991 Buick Park Avenue Ultra 3.8 V6 GAS
- Raise and support vehicle.
- Mark position of shaft in relation to pinion flange for reassembly.
- Remove straps securing universal joint to pinion flange, then disconnect shaft from flange. Tape bearing cups to universal joint to prevent loss of ne...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 1991 Buick Park Avenue AUTOMOBILES
Alternator, Replace
Vehicle: 1991 Buick Park Avenue 3.8 V6 GAS
- Disconnect battery ground cable.
- Remove drive belt.
- Remove alternator mounting bolts.
- Disconnect connector from alternator.
- Remove nut and B+ terminal from alternator.
- Remove altern...
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MAINTENANCE LAMP RESET PROCEDURES FOR 1991 Buick Park Avenue AUTOMOBILES
General Motors Corp./Saturn Cars -> Check Engine Or Service Now Soon Engine Indicator Lamps (Gasoline Engines w/Electronic Engine Controls Or EFI) -> Except LeMans, Metro, Prizm, Storm & Vibe
Vehicle: 1991 Buick Park Avenue Ultra 3.8 V6 GAS
The Check Engine lamp should light when the ignition is turned On. When the engine is started, the lamp should go off. If the lamp remains on for 10 seconds or constantly after the engine is started, the self diagnosis system has detected a fault condition and has stored a code in the system Electronic Control Module (ECM) or Powertrain Control Module (PCM). After diagnosis and repair, the ECM memory can be cleared of codes as follows:
On models except Cadillac with DEFI, remove the ECM/PCM fuse or disconnect the battery ground cable for approximately 30...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 1991 Buick Park Avenue AUTOMOBILES
Heater Hose, Replace -> Inlet -> Outlet
Vehicle: 1991 Buick Park Avenue Ultra 3.8 V6 GAS
Inlet
- Drain cooling system into a suitable container.
- Reposition heater hose inlet clamp at water outlet using hose clamp pliers.
- Remove heater inlet hose from water outlet.
- Reposition heater core inlet hose clamp at heater core using hose clamp pliers.
- Remove hose from vehicle.
- Reverse procedure to i...
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SERPENTINE BELT SERVICE PROCEDURES FOR 1991 Buick Park Avenue AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 1991 Buick Park Avenue Ultra 3.8 V6 GAS
- Remove the battery.
- Rotate the tensioner counterclockwise to remove the drive belt.
- Remove the supercharger belt from...
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COMPONENT LOCATION DIAGRAMS FOR 1991 Buick Park Avenue AUTOMOBILES
Component location diagrams for most 1991 Buick Park Avenue cars and light trucks sold in the U.S. from 1990+.
Behind LH Side Of I/P, Left Of Steering Column Diagram for 1991 Buick Park Avenue 3.8 V6 GAS Components on diagram: |
Behind I/P, Left Of Steering Column Diagram for 1991 Buick Park Avenue 3.8 V6 GAS Components on diagram: |
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WIRING DIAGRAMS FOR 1991 Buick Park Avenue AUTOMOBILES
OEM drawn wiring diagrams for most 1991 Buick Park Avenue cars and light trucks sold in the U.S.
1991 Buick Park Avenue Ultra 3.8 V6 GAS Wiring Diagram Components on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 1991 Buick Park Avenue AUTOMOBILES
OEM TSB listings for most 1991 Buick Park Avenue cars and light trucks sold in the U.S. from 1985+.
Document: Car and Truck Fix It Right the First Time Issues Vehicle: 1991 Buick Park Avenue 3.8 V6 GAS Auto Systems: |
Document: GM TIRE WARRANTY PROGRAM CLAIMS GOODWILL GUIDELINES - REVISED Vehicle: 1991 Buick Park Avenue 3.8 V6 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 1991 Buick Park Avenue AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 1991 Buick Park Avenue 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 Buick Park Avenue 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 Buick Park Avenue 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 Buick Park Avenue 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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