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1991 Buick Regal CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Buick REPAIR SHOPS DON'T WANT YOU TO KNOW

Learn how to repair a car or truck, install or remove parts, wire an engine, reset warning lights, replace fuel filter, fix auto body and more. Get Automotix DIY!

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Get Full Access Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 1991 Buick Regal car and truck repair procedures including Buick engine diagrams, wiring diagrams, repair work estimating measures, technical service bulletins, auto body work guidance, starter & alternator replacement procedures, serpentine belt replacement procedures, radiator & hose replacement procedures, tune-up & drivability specifications, quick lube illustrations, preventive maintenance guide, engine light reset instructions, parts removal and install procedures, fuel filter replacement directions, component location diagrams, air filter locations & replacement instructions, a/c system specifications, and general auto service procedures. You don't have to be a car mechanic or technician to know how to fix your Buick Regal automobile. Try the Automotix DIY solution today!
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Using the Automotix DIY repair procedures will save you hundreds and even thousands of dollars! In addition, it will save you hours of touring the city searching for Buick mechanics you can trust. The Automotix DIY solution is particularly affordable. A full access to the entire DIY repair procedures and diagrams for your 1991 Buick Regal vehicle will cost less than a single gallon of gas. Here are some of the DIY repair tips and procedures you will find here:

A/C & HEATER SERVICE PROCEDURES FOR 1991 Buick Regal AUTOMOBILES

A/C & Cooling System Maintenance -> General Motors Corp. -> 1990-2002 Buick Regal, Chevrolet Lumina & Monte Carlo, Oldsmobile Cutlass Supreme & Intrigue & Pontiac Grand Prix & 1997-2002 Buick Century & 2000-02 Impala
Vehicle: 1991 Buick Regal Custom 3.1 V6 GAS

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BRAKE SERVICE PROCEDURES FOR 1991 Buick Regal AUTOMOBILES

DISC BRAKES, GENERAL MOTORS -> General Information -> TROUBLESHOOTING
Vehicle: 1991 Buick Regal Limited 3.8 V6 GAS

When troubleshoot...

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FUEL FILTER REPLACEMENT PROCEDURES FOR 1991 Buick Regal AUTOMOBILES

General Motors Corp./Saturn Passenger Cars -> Component Locations -> Century (1982-05), Regal, Celebrity, Cutlass Ciera, Cutlass Cruiser & 6000 2.5L, 2.8L MFI, 3.1L, 3.3L & 3.8L Engines
Vehicle: 1991 Buick Regal Custom 3.8 V6 GAS

CLICK HERE TO GET FULL ACCESS TO 1991 Buick Regal FUEL FILTER REPLACEMENT PROCEDURES

DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 1991 Buick Regal AUTOMOBILES

CV AXLE SHAFT, Replace
Vehicle: 1991 Buick Regal Limited 3.1 V6 GAS

  • Raise and support vehicle, then remove tire and wheel assembly.
  • Remove brake caliper from steering knuckle and suspend caliper assembly.
  • Remove four bolts holding hub/bearing assembly to knuckle.
  • On vehicles equipped with Anti-Lock Brake System (ABS), remove ABS sensor mounting bolt, then position sensor aside to avoid damage.
  • On vehicles equipped with 125C and HM-282 transaxles and right shaft of vehicles with 440-T4 transaxles, separate drive axle from transaxle using axle shaft remover tool No....

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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 1991 Buick Regal AUTOMOBILES

Alternator, Replace
Vehicle: 1991 Buick Regal Limited 3.1 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 Regal AUTOMOBILES

General Motors Corp./Saturn Cars -> Low Washer Fluid Indicator ->
Vehicle: 1991 Buick Regal Custom 3.8 V6 GAS

The windshield washer solvent tank has a switch that closes when the wash...

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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 1991 Buick Regal AUTOMOBILES

Radiator, Replace
Vehicle: 1991 Buick Regal Limited 3.8 V6 GAS

  • Disconnect battery ground cable.
  • Drain engine coolant into a suitable container.
  • Remove upper fan mounting bolts.
  • Remove upper radiator panel.
  • Remove coolant hoses from radiator and coolant recovery tank hose from radiator neck.
  • Disconnect coolant fan electrical co...

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SERPENTINE BELT SERVICE PROCEDURES FOR 1991 Buick Regal AUTOMOBILES

Serpentine Drive Belt, Replace
Vehicle: 1991 Buick Regal Limited 3.8 V6 GAS

  • On models equipped with airbag, disable airbag system.
  • On all models, disconnect battery ground cable.
  • Rotate tensioner counterclockwise using suitable tool to remove drive belt.
  • Remove tensioner pulley attaching bolt, then remove pulley.
  • Remove power steering pump from bracket and position aside.
  • Loosen, but do not remove, alternator attaching bolts, then remove alter...

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COMPONENT LOCATION DIAGRAMS FOR 1991 Buick Regal AUTOMOBILES

Component location diagrams for most 1991 Buick Regal cars and light trucks sold in the U.S. from 1990+.

Lower Front Of Engine Diagram for 1991 Buick Regal Limited 3.8 V6 GASLower Front Of Engine Diagram for 1991 Buick Regal Limited 3.8 V6 GAS

Components on diagram:
  • Fusible Link C
  • Fusible Link B
  • LH Shroud Diagram for 1991 Buick Regal Custom 3.8 V6 GASLH Shroud Diagram for 1991 Buick Regal Custom 3.8 V6 GAS

    Components on diagram:
  • Park Brake Switch
  • CLICK HERE TO GET FULL ACCESS TO 1991 Buick Regal PARTS/COMPONENTS LOCATION DIAGRAMS!

    WIRING DIAGRAMS FOR 1991 Buick Regal AUTOMOBILES

    OEM drawn wiring diagrams for most 1991 Buick Regal cars and light trucks sold in the U.S.

    1991 Buick Regal Custom 3.8 V6 GAS Wiring Diagram1991 Buick Regal Custom 3.8 V6 GAS Wiring Diagram

    Components on diagram:
  • Low Blower Relay
  • Blower Resistors
  • Blower Switch
  • Heater-A/C Control Assembly
  • Component Center
  • 1991 Buick Regal Limited 3.1 V6 GAS Wiring Diagram1991 Buick Regal Limited 3.1 V6 GAS Wiring Diagram

    Components on diagram:
  • Air Temp Valve
  • Bi Level Valve Actuator
  • A/C Solenoid Box
  • Heater Defrost Bi Directional Vacuum Actuator
  • CLICK HERE TO GET FULL ACCESS TO 1991 Buick Regal WIRING DIAGRAMS!

    TECHNICAL SERVICE BULLETINS FOR 1991 Buick Regal AUTOMOBILES

    OEM TSB listings for most 1991 Buick Regal 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 Regal Limited 3.8 V6 GAS

    Auto Systems:
  • Labor Times, Manuals, Warranty, Aids
  • Document: GM TIRE WARRANTY PROGRAM CLAIMS GOODWILL GUIDELINES - REVISED
    Vehicle: 1991 Buick Regal Limited 3.8 V6 GAS

    Auto Systems:
  • Labor Times, Manuals, Warranty, Aids
  • Wheels, Tires, Wheel Bearings, Seals, Hubs
  • CLICK HERE TO GET FULL ACCESS TO 1991 Buick Regal TECHNICAL SERVICE BULLETINS!

    COMPONENT/PARTS SPECIFICATIONS FOR 1991 Buick Regal AUTOMOBILES

    BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 1991 Buick Regal 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 Regal 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 Regal 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 Regal 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

    CLICK HERE TO GET FULL ACCESS TO 1991 Buick Regal SPECIFICATIONS DATA!

    Shop online for auto body parts, engines, wheels, lights...

    Click here to view more details about 1992 Buick Regal Headlight, Driver Side1992 Buick Regal Headlight, Driver Side, Bulbs included; Composite type; DOT and SAE approved; A high quality, direct fit OE replacement headlight assembly..

    Source: Auto Body Parts Store

    $50.60

    Click here to view more details1996 Buick Regal Shock and Strut Mount, Front, Includes lower spring seat and bearing; A high quality, direct fit OE replacement strut mount bearing plate; With 2 years limited Trustbuilt warranty..

    Source: Auto Body Parts Store

    $11.46

    Click here to view more details1981 Buick Regal Box OF 25 Plastic Christmas Tree Type Firewall Insulation Retainers, Box OF 25 Plastic Christmas Tree Type Firewall Insulation Retainers, , .

    Source: Wheels / Rims, Mirrors & Lights Store

    $5.50

    Click here to view more details1990 Buick Regal Custom V6, 3.1 L, 189 CID Rebuilt Engine, FWD, aluminum heads. Does not fit Lumina van., Warranty: 3-Year/100,000 Mile, .

    Source: Rebuilt Engines Store

    $1,445.00

    Click here to view more details1980 Buick Regal Used Wheel, 4X2, 14X6, STD STEEL, Very Good.

    Source: Used Auto Parts Store

    $82.00

    Click here to view more details2011 Buick Regal Used Rear View Mirror, w/OnStar (opt UE1), opt DD8, Very Good.

    Source: Used Auto Parts Store

    $64.00
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