Wiring Diagram Cluster
1991 Buick LeSabre Body Electrical Wiring Diagram
Find body control module wiring, door lock circuits, interior lighting paths, and horn/alarm schematics.
Matched Diagrams
48
Variant Used
LeSabre V6-231 3.8L VIN C SFI
Total Vehicle Diagrams
724
From Diagram To Fix
Use this wiring page as the jump point, not the dead end
Open the exact diagram, then move directly into the vehicle hub, the repair most likely tied to this system, or the code cluster that usually shows up with it.
Keep context
Vehicle Repair Hub
Step out of raw diagrams and into the full 1991 Buick LeSabre hub with repairs, specs, codes, and other systems already tied to this car.
View vehicle repair hub →OEM source
Factory Manual Evidence
When there is no clean repair shortcut for this system, drop into the OEM manual sections that usually carry the authoritative test path.
1991 Buick LeSabre A L L Diagnostic Trouble Codes ( DTC ) →Diagnostic signal
Codes Often Seen With This System
Use the code cluster when wiring faults overlap with check-engine or module-level diagnostics.
B1318: Battery Voltage Low →Top Body Electrical Diagram Paths
1.Electrical Diagrams > Lighting and Horns > Trunk LampGeneralOpen2.Doors, Hood and Trunk > Trunk / Liftgate — Diagnostic Aids > Pull-to-Seat ConnectorsBody and FrameOpen3.Doors, Hood and Trunk > Trunk / Liftgate — Diagnostic Aids > Push-to-Seat ConnectorsBody and FrameOpen4.Doors, Hood and Trunk > Trunk / Liftgate — Diagram Information and Instructions > Cell ReferencesBody and FrameOpen5.Doors, Hood and Trunk > Trunk / Liftgate — Diagram Information and Instructions > Schematic SymbolsBody and FrameOpen6.Doors, Hood and Trunk > Trunk / Liftgate — Diagram Information and Instructions > Wire Color Code IdentificationBody and FrameOpen7.Doors, Hood and Trunk > Trunk / Liftgate — Electrical Diagrams > Trunk Lid Pull-DownBody and FrameOpen8.Doors, Hood and Trunk > Trunk / Liftgate — Electrical Diagrams > Trunk Lid ReleaseBody and FrameOpen9.Horn — Diagnostic Aids > Pull-to-Seat ConnectorsLighting and HornsOpen10.Horn — Diagnostic Aids > Push-to-Seat ConnectorsLighting and HornsOpen11.Horn — Diagram Information and Instructions > Cell ReferencesLighting and HornsOpen12.Horn — Diagram Information and Instructions > Schematic SymbolsLighting and HornsOpen13.Horn — Diagram Information and Instructions > Wire Color Code IdentificationLighting and HornsOpen14.Horn — Electrical DiagramsLighting and HornsOpen15.Locks > Power Locks — Electrical Diagrams > With Keyless EntryBody and FrameOpen16.Locks > Power Locks — Electrical Diagrams > Without Keyless Entry > AU3 OptionBody and FrameOpen17.Locks > Power Locks — Electrical Diagrams > Without Keyless Entry > AU4 OptionBody and FrameOpen18.Components > Modules > Keyless Entry ModuleGeneralOpen19.Components > Relays > Door Lock Relay AssemblyGeneralOpen20.Components > Relays > Horn RelayGeneralOpen21.Components > Relays > Trunk Door Unlock RelayGeneralOpen22.Electrical Diagrams > Instrument Panel, Gauges and Warning Indicators > Door Switch > Door Lock Fiber OpticGeneralOpen23.Electrical Diagrams > Instrument Panel, Gauges and Warning Indicators > Door Switch > Door Lock SwitchGeneralOpen24.Electrical Diagrams > Lighting and Horns > Backup LampGeneralOpen25.Electrical Diagrams > Lighting and Horns > Brake LampGeneralOpen26.Electrical Diagrams > Lighting and Horns > Courtesy Lamp > Ash Tray LampGeneralOpen27.Electrical Diagrams > Lighting and Horns > Courtesy Lamp > System Diagram > Courtesy > LH SideGeneralOpen28.Electrical Diagrams > Lighting and Horns > Courtesy Lamp > System Diagram > Courtesy > RH SideGeneralOpen29.Electrical Diagrams > Lighting and Horns > Courtesy Lamp > System Diagram > Footwell CourtesyGeneralOpen30.Electrical Diagrams > Lighting and Horns > Courtesy Lamp > System Diagram > Rear RailGeneralOpen31.Electrical Diagrams > Lighting and Horns > Dimmer SwitchGeneralOpen32.Electrical Diagrams > Lighting and Horns > Dome LampGeneralOpen33.Electrical Diagrams > Lighting and Horns > Hazard Warning LampsGeneralOpen34.Electrical Diagrams > Lighting and Horns > Headlamp > Headlamp SwitchGeneralOpen35.Electrical Diagrams > Lighting and Horns > Headlamp > System Diagram > Daytime Running Lights (T61 Option)GeneralOpen36.Electrical Diagrams > Lighting and Horns > Headlamp > System Diagram > Twilight Sentinel (T82 Option) > Less Twilight SentinelGeneralOpen37.Electrical Diagrams > Lighting and Horns > Headlamp > System Diagram > Twilight Sentinel (T82 Option) > With Twilight SentinelGeneralOpen38.Electrical Diagrams > Lighting and Horns > HornGeneralOpen39.Electrical Diagrams > Lighting and Horns > Lamp Control ModuleGeneralOpen40.Electrical Diagrams > Lighting and Horns > Map LightGeneralOpen41.Electrical Diagrams > Lighting and Horns > Parking Lamp > Park LampsGeneralOpen42.Electrical Diagrams > Lighting and Horns > Parking Lamp > Park Light SwitchGeneralOpen43.Electrical Diagrams > Lighting and Horns > System Diagram > HeadGeneralOpen44.Electrical Diagrams > Lighting and Horns > System Diagram > Warning > LH SideGeneralOpen45.Electrical Diagrams > Lighting and Horns > System Diagram > Warning > RH SideGeneralOpen46.Electrical Diagrams > Lighting and Horns > Turn Signals > Cornering LampsGeneralOpen47.Electrical Diagrams > Lighting and Horns > Turn Signals > Turn, Hazard & StopGeneralOpen48.Electrical Diagrams > Lighting and Horns > Underhood LampGeneralOpen
Exact Vehicle Hub
Browse →OEM Manual Evidence
Browse →1991 Buick LeSabre A L L Diagnostic Trouble Codes ( DTC )OEM Manual
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1991 Buick LeSabre A L L Diagnostic Trouble Codes ( DTC )OEM Manual
A L L Diagnostic Trouble Codes ( DTC ) — 1991 Buick Riviera V6-231 3.8L VIN L SFI Service Manual | Operation CHARM Operation CHARM : Car re...
1991 Buick LeSabre A L L Diagnostic Trouble Codes ( DTC )OEM Manual
A L L Diagnostic Trouble Codes ( DTC ) — 1991 Buick Skylark L4-151 2.5L Service Manual | Operation CHARM Operation CHARM : Car repair manua...
1991 Buick LeSabre A L L Diagnostic Trouble Codes ( DTC )OEM Manual
A L L Diagnostic Trouble Codes ( DTC ) — 1991 Buick Reatta V6-231 3.8L VIN L SFI Service Manual | Operation CHARM Operation CHARM : Car rep...
Likely Trouble Codes for This System
Browse →More LeSabre Wiring Pages
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