1996 Buick Century CustomFACTORY OEM SERVICE PROCEDURE

Control Units

CONTROL UNITS

Component Component Location
Automatic Door Unlock Module Behind left side of dash, near heater duct.
Cruise Control Module Front of left shock tower. See Figure .
Daytime Running Lamps (DRL) Module Behind left side of dash.
Diagnostic Energy Reserve Module (DERM) Behind left side of dash, right of steering column.
EBCM Independent Lamp Driver Module Under left side dash, left of steering column.
Electronic Brake Control Module Behind right side of dash.
Ignition Control Module (2.2L VIN 4) Left rear of engine, above transaxle. See Figure .
Ignition Control Module (3.1L VIN M) Top right side of engine. See Figure .
Power Window Control Module Behind right side of dash.
Powertrain Control Module (PCM) (2.2L VIN 4) Behind right side of dash. See Figure .
Powertrain Control Module (PCM) (3.1L VIN M) Behind right side of dash. See Figure .
Remote Control Door Lock Receiver Forward left rear wheelwell.
Seat Belt/Ignition Key/Lamps & Turn Signal Alarm (Buick) Behind dash, left of steering column.
Seat Belt/Ignition Key/Lamps & Turn Signal Alarm (Oldsmobile) Behind dash, right of glove box.
Windshield Wiper Motor On left side of firewall.
Window Wiper Pump Top center of tailgate.
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.