2005 Buick Century CustomFACTORY OEM SERVICE PROCEDURE

Computer/Integrating Systems Component Views

Fig 1: Below Left Side of I/P Component Views
GM1388014Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Body Control Module (BCM)
2 Body Control Module (BCM) Connector, C4
3 Body Control Module (BCM) Connector, C3
4 Body Control Module (BCM) Connector, C2
5 Body Control Module (BCM) Connector, C1
6 I/P Courtesy Lamp - Left
7 Turn Signal/Hazard Flasher Module
8 Backup Lamp Relay
Fig 2: Lower Left Side Of Steering Column, Right Center Of IP Component Views
GM591464Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Data Link Connector (DLC)
2 Splice Pack, SP205
Fig 3: Behind The Right Side Of The I/P Component View
GM1162362Courtesy of GENERAL MOTORS CORP.
Callout Component Name
1 Vacuum Reservoir
2 G200
3 Fuse Block - I/P
4 C200
5 Blower Motor
6 Blower Motor Resistor Assembly (CJ3)/Blower Motor Control Processor (CJ2)
7 P100
8 Vacuum Reservoir
9 Black Vacuum Hose
10 Air Temperature Actuator - Right
11 Automatic Headlamp Relay
12 Rear Compartment Lid Release Relay
13 Rear Window Defogger Relay
14 Retained Accessory Power (RAP) Relay
15 I/P Wiring Harness
16 Air Temperature Actuator - Left
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.