Segment:
Full-size/Large Sedan
Target Audience:
Owners seeking to perform maintenance and repairs, DIY enthusiasts, independent repair shops
Competitors 2006:
Chrysler 300, Dodge Charger, Ford Five Hundred, Mercury Montego, Toyota Avalon, Lincoln Town Car
Convenience:
Instant online access, searchable content, accessible on multiple devices (PC, laptop, smartphone, tablet) with internet connection.
Licensing:
Officially licensed and derived from OE (Original Equipment) materials by RepairSurge.
Value Proposition:
Cost savings through DIY repairs, comprehensive information, year-long access with renewal options.
Powertrain:
Engine mechanical (3.6L LY7, 3.8L L32 Supercharged), Engine control systems, Fuel system, Cooling system, Exhaust system, Transmission (4-speed automatic 4T65-E)
Chassis:
Brakes (ABS, DRL, TCS), Steering, Suspension (Front and Rear), Wheels and Tires
Electrical:
Body Control Module (BCM), Powertrain Control Module (PCM), Lighting, Instrumentation, HVAC controls, Audio system, Power accessories (windows, locks, seats), Navigation system (if equipped), Wiring diagrams
Body And Interior:
Body panels, Doors, Glass, Seats, Interior trim, HVAC system components
Maintenance:
Scheduled maintenance intervals, Oil changes, Filter replacements, Fluid checks and changes, Tune-ups
Diagnostics:
Troubleshooting guides, Diagnostic Trouble Codes (DTCs), Diagnostic procedures for various systems
Repair:
Engine component repair and replacement, Transmission overhaul, Brake system repair, Suspension component replacement, Electrical component repair, HVAC system repair
Assembly Disassembly:
Step-by-step instructions for component removal and installation
Depth:
Comprehensive, covering basic to advanced repairs, diagnostics, and specifications derived from OE materials.
Engine Description 1:
3.6L V6 DOHC, 24-valve, Aluminum block and heads
Displacement 1:
3564 cc (217.5 cu. in.)
Horsepower 1:
255 hp @ 6200 rpm (approx.)
Torque 1:
250 lb-ft @ 4000 rpm (approx.)
Engine Description 2:
3.8L V6 OHV, 12-valve, Supercharged, Cast-iron block, Aluminum heads
Displacement 2:
3791 cc (231.3 cu. in.)
Horsepower 2:
235 hp @ 5200 rpm (approx.)
Torque 2:
275 lb-ft @ 3600 rpm (approx.)
Fuel Delivery:
Sequential Port Fuel Injection (SFI)
Fuel Type:
Regular Unleaded Gasoline (87 Octane)
Ignition System:
Coil-near-plug ignition
Length:
197.9 inches (5027 mm)
Width:
72.5 inches (1841 mm)
Height:
58.2 inches (1478 mm)
Wheelbase:
113.8 inches (2891 mm)
Curb Weight:
3700 - 3900 lbs (approx., depending on engine/options)
Gross Vehicle Weight Rating:
Not specified, typically ~5000 lbs
Trunk Volume:
15.0 cubic feet (approx.)
NHTSA Front Impact Driver:
5 Stars
NHTSA Front Impact Passenger:
5 Stars
NHTSA Side Impact Front Driver:
5 Stars
NHTSA Side Impact Front Passenger:
5 Stars
NHTSA Side Impact Rear Driver:
5 Stars
NHTSA Side Impact Rear Passenger:
5 Stars
IIHS Moderate Overlap Front:
Good
ABS:
Standard (4-wheel disc brakes with ABS)
Traction Control:
Standard (TCS)
Electronic Stability:
Available (StabiliTrak)
Airbags Front:
Standard front driver and passenger airbags
Airbags Side:
Available front and rear side-impact airbags
Seatbelts:
3-point front and rear seat belts, pretensioners
Audio System:
Standard AM/FM/CD stereo with available premium sound systems (e.g., Bose), auxiliary input, and CD changer.
Navigation:
Available factory-installed navigation system.
Parking Sensors:
Available rear parking assist system.
Onstar:
Available OnStar communication system.
Oil Change Interval:
Every 5,000 miles or 6 months, whichever comes first (or based on oil life monitoring system).
Engine Air Filter:
Inspect every 15,000 miles, replace as needed (typically every 30,000 miles).
Cabin Air Filter:
Replace every 15,000 miles or annually.
Transmission Fluid Change:
Inspect every 30,000 miles, replace fluid and filter around 60,000-100,000 miles or as per severe service schedule.
Engine Oil Type Ly7:
SAE 5W-30 Synthetic Motor Oil (meeting GM specification GMSA19256)
Engine Oil Type L32:
SAE 5W-30 Synthetic Motor Oil (meeting GM specification GMSA19256)
Coolant Type:
Dex-Cool (Orange silicate-free) Extended Life Antifreeze/Coolant
Power Steering Fluid:
GM Power Steering Fluid (or equivalent)
Engine Oil Leaks:
Potential for oil leaks from valve cover gaskets or front crankshaft seal on LY7 engine.
Transmission Shifting:
Occasional reports of harsh shifting or transmission slipping with the 4T65-E, often related to fluid service or electronic control issues.
Suspension Noise:
Front end clunks or rattles can sometimes indicate worn strut mounts or sway bar links.
Supercharger Coupler:
On the L32 engine, the supercharger snout coupler can wear out, leading to a loss of boost and a rattling noise.
Buick Legacy:
Buick, established in 1903, has a long history of producing comfortable, reliable, and often luxurious American vehicles.
Lacrosse Introduction:
The LaCrosse debuted for the 2005 model year, replacing the Buick LeSabre and Park Avenue, positioning itself as Buick's flagship sedan.
2006 Updates:
Minor updates for 2006, focusing on feature packaging and option availability. The core platform and powertrains remained largely consistent with the initial launch.
Manufacturing Plant:
Kansas City Assembly, Kansas City, Missouri, USA
Initial Reception:
The 2005-2006 LaCrosse was generally well-received for its comfortable ride, spacious interior, and refined styling, appealing to a more traditional luxury sedan buyer.
Safety Awards:
Achieved excellent safety ratings from NHTSA and IIHS, highlighting its robust structural integrity and safety features.
