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Home >> Buick >> 1991 >> Reatta 2D Convertible >> Repair and Diagnosis >> Electrical >> Component Locations >> Electrical Component Locator >> Control Units

Control Units

CONTROL UNITS LOCATION

Component Location
ABS System
Control Module In luggage compartment, on left rear wheelwell.
Modulator Behind left upper radiator support.
Air Bag System
Initiator Module In steering wheel pad assembly.
Resistor Module Behind left side of dash, above parking brake.
Body Control Module (BCM) Under right side of dash, behind glove compartment.
Cathode Ray Tube Controller In console, below radio.
Diagnostic Energy Reserve Module (DERM) Behind dash, on right of steering column.
Electronic Compass Module In luggage compartment, under rear shelf.
HVAC Power Module In center of dash, in A/C-heater module.
HVAC Programmer Behind center of dash, on right side of plenum.
Headlight Door Control Module In front left corner of engine compartment, behind headlight.
Heated Windshield
Control Module Behind left side of dash, left of steering column.
Power Module On right rear of engine compartment firewall.
Ignition Coil & Module On right front of engine.
Keyless Entry Module
Reatta Convertible Below convertible top, along center of rear shelf.
Reatta Coupe Behind left rear door sill.
Riviera, Toronado & Trofeo Under center of rear package shelf, in luggage compartment.
Pass Key Decoder Module Behind dash, left of steering column.
Power Window (Express Down) Module On rear of left front door.
Powertrain Control Module (PCM)
Reatta & Riviera Behind right side of dash, left of A/C-heater programmer. See Figure .
Toronado & Trofeo Behind right side of dash, left of A/C-heater programmer. See Figure .
Steering Wheel Radio & HVAC Control Interface Module On base of steering column.
Seat Control Module In center console, near seat air pump assembly.
Theft Deterrent Module Under left side of dash, left of steering column.