2005 Buick LaCrosse Service and Repair Manual

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Factory-Grade Data

2005 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
  • CXS Sedan 4-Door

Engines covered

  • 3.8L 3800CC 231Cu. In. V6 GAS OHV Naturally Aspirated
  • 3.6L 3564CC 217Cu. In. V6 GAS DOHC 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

2005 Buick LaCrosse Recalls & Complaints

NHTSA #06V41700031/10/2006Component: AIR BAGS:FRONTAL

CERTAIN VEHICLES ORIGINALLY BUILT WITH CLOTH SEATS THAT WERE EQUIPPED WITH AN AUTOMATIC AIR BAG PASSENGER SENSING SYSTEM AND LATER REUPHOLSTERED WITH AFTERMARKET LEATHER SEAT COVER KITS ARE INVOLVED.

Consequence

IF THE PASSENGER SENSING SYSTEM MALFUNCTIONS, THE FRONT AIR BAG ON THE PASSENGER SIDE MAY BE DISABLE

Remedy

BECAUSE A REPLACEMENT LEATHER SEAT COVER THAT IS COMPATIBLE WITH THE PASSENGER SENSING SYSTEM IS NOT

NHTSA #05V15600020/04/2005Component: SERVICE BRAKES, HYDRAULIC:PEDALS AND LINKAGES

ON CERTAIN PASSENGER VEHICLES, THE CLIP THAT SECURES THE BRAKE PUSHROD TO THE BRAKE PEDAL ARM PIN COULD HAVE BEEN BENT WHEN IT WAS INSTALLED. A BENT CLIP MAY COME OFF, ALLOWING THE BRAKE BOOSTER PUSH

Consequence

PUSHING ON THE PEDAL WILL NOT APPLY THE BRAKES AND A VEHICLE CRASH COULD OCCUR WITHOUT PRIOR WARNING

Remedy

DEALERS WILL INSTALL A NEW BRAKE PEDAL PUSH ROD BUSHING AND RETAINING CLIP AND, IF THE CLIP WAS MISS

NHTSA #09E00500017/02/2009Component: STEERING

DORMAN IS RECALLING 979 STEERING KNUCKLES, DORMAN P/NOS. 697-902 AND 697-903, SOLD UNDER DORMAN'S "OE SOLUTIONSTM" BRAND NAME, AND NAPA P/NOS. 7-8502 AND 7-8503 WHICH WERE SOLD FOR REPLACEM

Consequence

A BROKEN STEERING KNUCKLE COULD RESULT IN LOSS OF STEERING CONTROL AND A POSSIBLE CRASH WITHOUT WARN

Remedy

DORMAN WILL NOTIFY OWNERS AND REPLACE THE DEFECTIVE STEERING KNUCKLES FREE OF CHARGE AND REIMBURSE T

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 #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 #11011782

This Preliminary Information communication provides information to the technician about the use of J-35616-64B terminal test probe, replacement terminals, and terminated leads. The J-35616-64B is the latest test probe released for checking

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 #11008956

This service bulletin provides information for dealers/technicians on When and How to Submit a Field Product Report (FPR) (U.S. and Canada Dealers Only).

Showing the 8 most recent of 576 technical service bulletins on file with NHTSA.

20150725Component: ELECTRICAL SYSTEMCrash reportedFire reported

THE VEHICLE WAS BEING DRIVEN AT NIGHT WHEN SUDDENLY THE HEADLIGHTS WENT OUT CAUSING THE DRIVER TO LEAVE THE ROAD AS HE WAS GOING THRU A TURN AT THE TIME. LUCKILY NO ONE WAS INJURED AND THE CAR ONLY SU

20150725Component: UNKNOWN OR OTHERCrash reportedFire reported

THE VEHICLE WAS BEING DRIVEN AT NIGHT WHEN SUDDENLY THE HEADLIGHTS WENT OUT CAUSING THE DRIVER TO LEAVE THE ROAD AS HE WAS GOING THRU A TURN AT THE TIME. LUCKILY NO ONE WAS INJURED AND THE CAR ONLY SU

20140925Component: STEERINGCrash reported2 injured

I WAS ON MY WAY BACK HOME WHICH IS ROCHESTER, NY. I WAS COMING FROM PORSMOUTH, VA. FROM BURYING MY MOTHER WHICH SHE PASS ON JUNE 3, 2014. I HAD A CAR ACCIDENT ON JUNE 22, 2014. A CAR WAS COMING

20140925Component: STRUCTURE:BODYCrash reported2 injured

I WAS ON MY WAY BACK HOME WHICH IS ROCHESTER, NY. I WAS COMING FROM PORSMOUTH, VA. FROM BURYING MY MOTHER WHICH SHE PASS ON JUNE 3, 2014. I HAD A CAR ACCIDENT ON JUNE 22, 2014. A CAR WAS COMING

20150514Component: STEERINGCrash reported1 injured

TL* THE CONTACT OWNED A 2005 BUICK LACROSSE. ON AUGUST 24, 2014, WHILE DRIVING APPROXIMATELY 65 MPH, THE POWER STEERING AND BRAKES FAILED. AS A RESULT, THE VEHICLE CRASHED INTO A CONCRETE DIVIDER. THE

Showing the 5 most serious of 414 complaints filed with NHTSA.

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