Century

Buick Century OEM Service Manuals – PDF Download & USB Format

Spanning multiple decades, the Buick Century earned a reputation as one of GM’s most dependable midsize sedans. From the classic rear-wheel-drive models of the 1970s and 80s to the final front-wheel-drive versions in the early 2000s, each generation of Century shares one thing in common: accessible luxury and reliable engineering.

These OEM Buick Century repair manuals are the official service guides used by GM technicians. Whether you’re restoring a vintage model or maintaining a daily driver, these manuals offer detailed diagrams, diagnostic routines, wiring schematics, and step-by-step procedures—available as a searchable PDF or offline USB flash drive.

Engine Overhaul & Performance Service

• Full coverage for 3.1L V6, 3.3L, 3.8L 3800 Series II, and older V8 models

• Cylinder head torque specs, timing chain replacement, and valve train repair

• Idle air control, MAP sensor, and throttle body diagnostics

• Fuel and spark system troubleshooting with OEM schematics

• Perfect reference for anyone seeking a Buick Century engine repair manual PDF

Transmission Diagnostics & Drivetrain Components

• Step-by-step rebuild procedures for 4T60-E, 4T65-E, and older THM automatic transmissions

• Valve body diagrams, fluid pressure testing, and shift solenoid service

• Transmission fluid specs, pan torque sequences, and reprogramming after repair

• Front-wheel drive (FWD) axle replacement, CV joint diagnostics, and U-joint service

• Great for Buick Century transmission service and drivetrain repair

Wiring Schematics & Electrical System Troubleshooting

• Full Buick Century wiring diagrams download – engine, dash, lighting, and sensors

• Fuse panel layout, relay testing, and connector pinouts

• Body Control Module (BCM) and Powertrain Control Module (PCM) diagnostics

• Step-by-step guidance for resolving power window, lighting, and ignition issues

• Designed for technicians and DIYers needing Buick Century electrical repair manuals

Heating, Cooling & Interior Systems

• HVAC blower motor testing, heater core replacement, and A/C pressure sensor analysis

• Blend door actuator positioning and dual-zone climate control troubleshooting (if equipped)

• Seat heater repair, power mirror wiring, and cruise control system checks

• Covers all interior modules including anti-theft, instrument cluster, and radio harnesses

• Includes OEM HVAC and comfort system diagnostics for every Buick Century generation

Suspension, Steering & Brake Procedures

• Front and rear strut/shock replacement, ball joint servicing, and control arm torque specs

• Power steering pump removal, rack and pinion diagnostics, and alignment specs

• ABS light diagnosis, wheel speed sensor testing, and brake fluid bleeding guides

• Diagrams for both disc and drum brake setups across all model years

• Essential for anyone working on Buick Century suspension and brake repairs

Available Manual Formats

• PDF Download – Fast access, fully searchable, ideal for digital use

• USB Flash Drive – Durable, portable, and workshop-ready for offline access

Who Should Use These Manuals?

• GM-certified mechanics and auto shop professionals

• Independent service garages focusing on domestic vehicles

• Restorers and DIY owners bringing classic Buick models back to life

• Diagnostic experts seeking factory-correct wiring and systems info