1991 Pontiac Bonneville service and repair manual — a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.
Designed for technicians and DIY owners, this manual helps you diagnose issues correctly, follow proven repair steps, and use wiring diagrams and system sections to track faults faster.
What’s included
- Step-by-step repair procedures and service information
- Specifications and reference data (where provided)
- Electrical diagnostics with wiring diagrams
- Coverage across major systems: engine, transmission/driveline, brakes, steering, suspension, HVAC, and more
Trims covered
- LE Sedan 4-Door
- SSE Sedan 4-Door
- SE Sedan 4-Door
Engines covered
- 3.8L 3800CC 231Cu. In. V6 GAS OHV Naturally Aspirated
Index / Table of contents
- Body
- Brakes
- Chassis Electrical
- Driveline
- Engine Cooling
- Engine Electrical
- Engine Mechanical
- Engine Performance & Emission Controls
- Fuel System
- General Information & Identification
- Heating, Ventilation, & Air Conditioning
- Hybrid & Electric Vehicle Systems
- Steering
- Suspension
- Transmission, Clutch, & Transfer Case
- Wiring Diagrams
CERTAIN REPLACEMENT FUEL FILTERS, FRAM BRAND NAME P/N G3727, WITH DATE CODES X52911 THROUGH X60801 SEQUENTIALLY OR X600141 AND A MEXICO COUNTRY OR ORIGIN MARKING ON THE FUEL FILTER HOUSING MANUFACTURE
THIS CONDITION MAY CAUSE AN INADEQUATE SEAL AT THE CONNECTION, POTENTIALLY LEADING TO A FUEL LEAK. I
HONEYWELL WILL NOTIFY OWNERS AND REPLACE THE FUEL FILTERS FREE OF CHARGE. THE RECALL BEGAN ON OCTOB
THE CONSOLE MOUNTED SHIFT LEVER MAY DISENGAGE FROM THE SHIFT CONTROL CABLE BRACKET CAUSING LOSS OF GEAR INDICATOR REFERENCE AND SHIFT SELECTOR OPERATION.
THE DRIVER CAN PLACE THE GEAR SHIFTER IN THE PARKPOSITION WITHOUT SETTING THE PARKING BRAKE AND THE
INSTALL TWO TRANSAXLE SHIFT CONTROL CABLE RETAINING CLIPS.
Expanded Availability for Remanufacture and Return (R&R) Electronic Control Modules
EXCESSIVE VIBRATION OF ELECTROCHROMIC INSIDE REARVIEW MIRROR. *TW
WHILE DRIVING ON FREEWAY I WAS STRUCK BY A DRUNK DRIVER GOING APPROX. 70-75MPH. I WAS HIT IN THE LEFT REAR OF THE CAR AND I WAS IMMEDIATELY THROWN BACK.AFTER PULLING OVER I FOUND OUT THAT THE SEAT BAC
FAILURE OF THE DRIVER SIDE SEAT BELT, BELT DID NOT LOCK WHEN THE CONSUMER WAS IN AN ACCIDENT. TT
BRAKES FAILED WHILE DRIVING-PEDAL WENT TO THE FLOOR-CAUSING ACCIDENT. TT
DT*: THE CONTACT STATED WHILE DRIVING 30 MPH ON THE HIGHWAY, THE ROD BEARING FRACTURED ALONG THE ENGINE WITHOUT WARNING. THIS CAUSED OIL TO LEAK ONTO THE HOT CATALYTIC CONVERTER CAUSING A FIRE TO E
Showing the 4 most serious of 26 complaints filed with NHTSA.
