Target Audience:
Buick Century owners, DIY mechanics, independent repair shops.
Value Proposition:
Provides licensed OE-level repair information at a fraction of the cost of printed manuals or dealership service, with convenient digital access.
Feature Licensing:
Officially licensed, derived from OE materials.
Feature Convenience:
Instant online access, compatible with multiple devices.
Feature Accuracy:
Accurate, up-to-date service and repair data.
Engine Mechanical:
Complete engine overhaul, disassembly, assembly, diagnostics, timing, lubrication systems, cooling systems, emissions controls.
Engine Electrical:
Ignition system, fuel injection system, starter system, charging system, diagnostic trouble codes (DTCs), sensor and actuator testing, wiring diagrams.
Transmission Automatic:
Operation, diagnosis, repair, fluid specifications, shift control, torque converter.
Brakes:
Hydraulic system, ABS components, rotor/pad replacement, caliper service, brake fluid specifications, bleeding procedures.
Suspension:
Front and rear suspension components, alignment specifications, shock absorber/strut replacement, ball joint service, control arm replacement.
Steering:
Power steering system, steering gear/rack and pinion service, tie rod ends, steering column components, alignment.
Electrical Body:
Lighting systems, power windows, power locks, mirrors, seats, wipers, horns, body control module (BCM) related circuits, interior/exterior lighting diagnostics.
HVAC:
Air conditioning system diagnosis, refrigerant handling, compressor, evaporator, condenser service, heater core replacement, blower motor, climate control modules.
Body Interior:
Panel removal and installation, trim components, seat removal, dashboard components, door panel service.
Diagnostics Troubleshooting:
System-specific diagnostic procedures, symptom-based troubleshooting, DTC interpretation and resolution.
Maintenance:
Scheduled maintenance, oil changes, filter replacements, fluid checks and top-offs, spark plug replacement, belt replacement, battery maintenance.
Repair:
Detailed step-by-step repair procedures for all major vehicle systems, including component removal, installation, and adjustment.
Troubleshooting:
Diagnostic flowcharts and guided troubleshooting sequences for common and complex issues.
Wiring Diagrams:
Comprehensive electrical wiring diagrams for all vehicle circuits.
Depth Level:
Factory-derived, comprehensive repair and diagnostic information suitable for professional technicians and advanced DIY enthusiasts.
NHTSA Frontal Driver Rating:
Good (for models equipped with side airbags)
NHTSA Frontal Passenger Rating:
Good (for models equipped with side airbags)
IIHS Frontal Offset Rating:
Acceptable (for models with side airbags)
Active Safety:
Anti-lock Braking System (ABS), Traction Control System (TCS) (optional on some trims).
Passive Safety:
Dual front airbags, optional front side-impact airbags, front and rear crumple zones, LATCH child seat anchors, seatbelt pretensioners.
Infotainment Features:
Optional CD player, AM/FM stereo, cassette player (on some models), auxiliary input (rare), basic climate controls.
Driver Assistance Features:
Cruise control, optional ABS, optional traction control.
Connectivity Options:
Limited connectivity by modern standards, typically only basic audio inputs.
Oil Change Interval:
Every 7,500 miles or 6 months, whichever comes first, with synthetic oil. Consult manual for conventional oil intervals.
Tire Rotation Interval:
Every 7,500 miles.
Transmission Fluid Change:
Typically around 50,000-100,000 miles, or as indicated by maintenance schedule or fluid condition. Refer to manual for specific guidance on the 4T65-E.
Engine Oil Type:
SAE 5W-30 Synthetic Motor Oil. Refer to manual for specific API service classification.
Engine Oil Capacity:
4.5 quarts (4.3 liters) with filter change.
Coolant Type:
Dex-Cool (GM 6043-M) Extended Life Antifreeze/Coolant (Orange).
Transmission Fluid Type:
Dexron VI Automatic Transmission Fluid (ATF).
Brake Fluid Type:
DOT 3 Brake Fluid.
Power Steering Fluid:
GM Power Steering Fluid or Dexron III ATF.
Common Problems:
Issues can include intake manifold gasket leaks, power steering leaks, occasional transmission solenoids issues (4T65-E), and front wheel bearing noise. The 2.2L Ecotec engine is generally robust but requires consistent maintenance.
Engine Notes:
The 2.2L Ecotec engine is known for its fuel efficiency but can be sensitive to oil quality and timely maintenance to prevent internal wear.
Brand History:
Buick, a division of General Motors, has a long history of producing comfortable and reliable vehicles, often positioned as a premium American brand.
Century Lineage:
The Century nameplate has been used by Buick across multiple generations and vehicle types since the early 20th century. The 2005 model represents the final iteration of the C-Body platform Century, a front-wheel-drive mid-size sedan focused on comfort and value.
Production Years:
1936–1942, 1954–1958, 1973–1977, 1982–2005 (with significant redesigns).
Manufacturing Location:
Built at GM's Fairfax Assembly Plant in Kansas City, Kansas, and Oshawa Car Assembly in Oshawa, Ontario, Canada.
