2003 Pontiac Bonneville Service and Repair Manual

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Factory-Grade Data

2003 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

  • SE Sedan 4-Door
  • SLE Sedan 4-Door
  • SSEi Sedan 4-Door

Engines covered

  • 3.8L 3800CC 231Cu. In. V6 GAS OHV Naturally Aspirated
  • 3.8L 3800CC 231Cu. In. V6 GAS OHV Supercharged

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

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Vehicle Safety Data

2003 Pontiac Bonneville Recalls & Complaints

NHTSA #03V23800001/07/2003Component: FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY

ON CERTAIN CADILLAC DEVILLE AND SEVILLE PASSENGER VEHICLES, FUNERAL COACHES, AND LIMOUSINES EQUIPPED WITH A V8 (4.6L) ENGINE, OLDSMOBILE AURORA PASSENGER VEHICLES EQUIPPED WITH A V8 (4.0L ) ENGINE, AN

Consequence

FUEL SYSTEM COMPONENTS CAN BE DAMAGED AND FUEL CAN LEAK FROM THE VEHICLE WHEN IT IS REFUELED. FUEL

Remedy

DEALERS WILL REPLACE THE FUEL TANK PRESSURE SENSOR. OWNER NOTIFICATION BEGAN ON OCTOBER 17, 2003.

TSB #11020816

This PI communicates the requirement to provide a pico file to receive diagnostic assistance from TAC.

TSB #11017252

This service bulletin provides information for dealers/technicians on OnStar Module 2G Sunset Information.

TSB #11014455

This Preliminary Information communication provides information to the technician about vehicles that have an unusual noise and is difficult to identify, isolate or pinpoint. Technician should get record a sound clip or take a video of the

TSB #11009156

This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester and

TSB #11007744

This Preliminary Information communication provides information to the technician about vehicles that the Heater-Vent-Air Conditioning blows warm air. Before calling General Motors Technical Assistance Center technician will need to have hi

TSB #11007743

This Preliminary Information communication provides information to the technician about vehicles that the Heater-Vent-Air Conditioning blows warm air. Before calling General Motors Technical Assistance Center technician will need to have hi

TSB #11007208

This Preliminary Information communication provides information to the technician about changing the tire and wheel size on vehicles. General Motors will only support a tire calibration for tires that have been sized, tested and designed fo

TSB #11006621

Vehicle Wide Programming (VWP) is a new process to update software on GM Vehicles. It provides the ability via a single selection within Techline Connect to first identify which modules need updating and then proceed to updating affected mo

Showing the 8 most recent of 424 technical service bulletins on file with NHTSA.

20100713Component: SEAT BELTSCrash reported1 injured

TL* THE CONTACT OWNS A 2003 PONTIAC BONNEVILLE. WHILE APPROACHING A TRAFFIC STOP AT 25 MPH, THE CONTACT FAILED TO STOP THE VEHICLE AND CRASHED INTO THE REAR OF ANOTHER VEHICLE. THE CONTACT'S SEAT BELT

20100713Component: AIR BAGS:FRONTALCrash reported1 injured

TL* THE CONTACT OWNS A 2003 PONTIAC BONNEVILLE. WHILE APPROACHING A TRAFFIC STOP AT 25 MPH, THE CONTACT FAILED TO STOP THE VEHICLE AND CRASHED INTO THE REAR OF ANOTHER VEHICLE. THE CONTACT'S SEAT BELT

20040129Component: SEATS:MID/REAR ASSEMBLYCrash reported1 injured

VEHICLE WAS INVOLVED IN A HEAD ON COLLISION WHILE DRIVING AT 45 MPH ON AN ICY ROAD. UPON IMPACT THE CHILD IN THE MIDDLE REAR SEAT WITH SEAT BELT ON FLEW FORWARD AND HIT THE PLASTIC CONSOLE BETWEEN B

20080211Component: AIR BAGSCrash reported

TL*THE CONTACT OWNS A 2003 PONTIAC BONNEVILLE. WHILE DRIVING APPROXIMATELY 35 MPH, THE CONTACT CRASHED INTO THE REAR OF ANOTHER VEHICLE. THE FRONT END WAS DAMAGED, BUT THE AIR BAGS FAILED TO DEPLOY.

20180212Component: ENGINEFire reported

TL* THE CONTACT OWNS A 2003 PONTIAC BONNEVILLE. WHILE THE VEHICLE WAS STOPPED AT A STOP SIGN, SMOKE EMERGED FROM UNDERNEATH THE HOOD WITHOUT WARNING. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC.

Showing the 5 most serious of 64 complaints filed with NHTSA.

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