Repair Diagrams for 1991 Buick Lesabre Engine, Transmission, Lighting, AC, Electrical & Warning Systems

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!

Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 1991 Buick Lesabre 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 1991 Buick Lesabre automobile. Try the Automotix DIY solution today!

DIY REPAIR SAMPLES > CONTINUE EXPLORING >

We have info for following modifications of 1991 Buick Lesabre

1991 Buick Lesabre 3.8 V6 GAS, CID:231, Fuel Injection, Aspiration:231, Engine VIN:, Desg:C
1991 Buick Lesabre Custom 3.8 V6 GAS, CID:231, Fuel Injection, Aspiration:231, Engine VIN:, Desg:C
1991 Buick Lesabre Limited 3.8 V6 GAS, CID:231, Fuel Injection, Aspiration:231, Engine VIN:, Desg:C

WIRING DIAGRAMS FOR 1991 Buick Lesabre AUTOMOBILES

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

1991 Buick Lesabre Custom 3.8 V6 GAS Wiring Diagram

Components on diagram:

Instrument Cluster

ECM

Cruise Control Module

Cruise Indicator

Cruise Control Servo

1991 Buick Lesabre Custom 3.8 V6 GAS Wiring Diagram

Components on diagram:

Vehicle Speed Sensor

Instrument Cluster

ECM

Cruise Control Module

1991 Buick Lesabre Limited 3.8 V6 GAS Wiring Diagram

Components on diagram:

Turn/Hazard Switch Assembly

RH Turn Indicator

RH Front Park Light

LH Turn Indicator

Head/Park Light Switch

1991 Buick Lesabre Custom 3.8 V6 GAS Wiring Diagram

Components on diagram:

Throttle Position Sensor

Starter Solenoid

Battery

Ignition Switch

Instrument Cluster

1991 Buick Lesabre Limited 3.8 V6 GAS Wiring Diagram

Components on diagram:

Fasten Belts Indicator

Head/Park Light Switch

Ignition Key Warning Switch

LH Front Door Jamb Switch

Twilight Sentinel/Daytime Running Lights Module

1991 Buick Lesabre 3.8 V6 GAS Wiring Diagram

Components on diagram:

LH Tail/Stop/Turn Light

Head/Park Light Switch

RH Tail/Stop/Turn Light

License Light

LH Rear Side Marker Light

1991 Buick Lesabre Custom 3.8 V6 GAS Wiring Diagram

Components on diagram:

Radio

LH Rear Speaker

LH Front Speaker

RH Rear Speaker

RH Front Speaker

1991 Buick Lesabre Limited 3.8 V6 GAS Wiring Diagram

Components on diagram:

RH Turn Indicator

LH Turn Indicator

ECM

Hi Beam Indicator

Coolant Temp Indicator

1991 Buick Lesabre Custom 3.8 V6 GAS Wiring Diagram

Components on diagram:

Heater And A/C Control Assembly

A/C Defrost Valve Vacuum Actuator

Vacuum Check Valve

Heater A/C Bi-Level Valve Vacuum Actuator Bi-Directional

Slave Valve Vacuum Actuator

CLICK HERE TO GET FULL ACCESS TO 1991 Buick Lesabre WIRING DIAGRAMS!

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

More parts

Auto Repair Quick Search

Help me find

Search DIY repair manuals by VIN...

Get the Complete Technical Service Bulletins!

Access diagrams and repair information such as wiring diagrams, diagnosis and repair charts, manufacturer service bulletins, and OEM Part numbers of your 1991 Buick Lesabre vehicle.