2009 Buick LaCrosse Service and Repair Manual

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Factory-Grade Data

2009 Buick LaCrosse 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.

Built for technicians and DIY owners, this manual helps you troubleshoot accurately, follow step-by-step repair procedures, and use wiring diagrams and system sections to diagnose problems faster.

What’s included

  • Step-by-step repair procedures and service information
  • Specifications and reference data (where provided)
  • Electrical coverage with wiring diagrams
  • Coverage across key systems: engine, transmission, brakes, steering, suspension, HVAC, and more

Trims covered

  • CXL Sedan 4-Door
  • CX Sedan 4-Door
  • Super Sedan 4-Door

Engines covered

  • 3.8L 3800CC 231Cu. In. V6 GAS OHV Naturally Aspirated
  • 5.3L 5328CC 325Cu. In. V8 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

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Vehicle Safety Data

2009 Buick LaCrosse Recalls & Complaints

NHTSA #14V35500023/06/2014Component: ELECTRICAL SYSTEM:IGNITION

This defect can affect the safe operation of the airbag system. Until this recall is performed, customers should remove all items from their key rings, leaving only the ignition key. The key fob (if

Consequence

If the key is not in the run position, the air bags may not deploy if the vehicle is involved in a c

Remedy

GM will notify owners, and dealers will install two key rings and an insert in the key slot or a cov

NHTSA #15V51900014/08/2015Component: EXTERIOR LIGHTING:HEADLIGHTS

General Motors LLC (GM) is recalling certain model year 2007 Pontiac Grand Prix, 2006-2009 Buick LaCrosse, 2006-2007 Buick Rainier, Chevrolet Trailblazer, GMC Envoy, 2006 Chevrolet Trailblazer EXT, GM

Consequence

Headlamps that do not illuminate reduce the driver's ability to see the roadway and reduce the vehic

Remedy

GM will notify owners, and dealers will replace the HDM, free of charge. The recall began on May 17

TSB #11023091

New Vehicle Monitoring Programs Section in IVH

TSB #11021792

This Preliminary Information communication provides information to the technician about vehicles that have an intermittent no crank, no start, or start stall concern with the security light coming on. Technician may find Diagnostic Trouble

TSB #11020816

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

TSB #11019074

This Preliminary Information communication provides information to the technician about the use of J-35616-64B and Mini 50 terminal test probe, replacement terminals, and terminated leads.

TSB #11019073

This Preliminary Information communication provides information to the technician about the use of J-35616-64B and Mini 50 terminal test probe, replacement terminals, and terminated leads.

TSB #11019072

This Preliminary Information communication provides information to the technician about the use of J-35616-64B and Mini 50 terminal test probe, replacement terminals, and terminated leads.

TSB #11017868

This service bulletin provides a procedure to flush and bleed power steering system to correct a power steering noise or fluid leak concern that is caused during extremely low temperatures.

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

Showing the 8 most recent of 1038 technical service bulletins on file with NHTSA.

20140825Component: AIR BAGSCrash reported1 injured

LEFT HOME FOR LOCAL RESTAURANT ABOUT 7:AM ON MAY 8. TRAVELING DOWN HWY 2 LANE, MUST HAVE DROPPED WHEEL OFF PAVEMENT AND THE CAR WENT CRAZY. I DO NOT REMEMBER WHAT HAPPENED. THE ACCIDENT REPORT SAY

20140825Component: STEERINGCrash reported1 injured

LEFT HOME FOR LOCAL RESTAURANT ABOUT 7:AM ON MAY 8. TRAVELING DOWN HWY 2 LANE, MUST HAVE DROPPED WHEEL OFF PAVEMENT AND THE CAR WENT CRAZY. I DO NOT REMEMBER WHAT HAPPENED. THE ACCIDENT REPORT SAY

20111127Component: SERVICE BRAKES, HYDRAULICCrash reported1 injured

I HAD COMPLETELY STOPPED MY VEHICLE IN A PARKING AREA AT A CONDOMINIUM COMPLEX WHERE I WAS DELIVERING A MEAL TO MY NEPHEW WHO RESIDES THERE. BECAUSE I HAD JUST RECENTLY LEARNED THAT SOMEONE FROM MY CO

20160826Component: VEHICLE SPEED CONTROLCrash reported

WHILE ENTERING A PARKING LOT AT APPROXIMATELY 20 MPH VEHICLE SUDDENLY ACCELERATED AT VERY HIGH RPMS AND JUMPED THE CURB HITTING A TREE, EXTREME PRESSURE ON BRAKE PEDAL WOULD NOT STOP VEHICLE.. THIS WA

20160826Component: UNKNOWN OR OTHERCrash reported

WHILE ENTERING A PARKING LOT AT APPROXIMATELY 20 MPH VEHICLE SUDDENLY ACCELERATED AT VERY HIGH RPMS AND JUMPED THE CURB HITTING A TREE, EXTREME PRESSURE ON BRAKE PEDAL WOULD NOT STOP VEHICLE.. THIS WA

Showing the 5 most serious of 146 complaints filed with NHTSA.

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