Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSBUICK1999REGAL LSREPAIR AND DIAGNOSIS (SINGLE PAGE)ACCESSORIES & EQUIPMENTCOMMUNICATION DEVICESBODY CONTROL MODULESCOMPONENT LOCATIONS
1999 Buick Regal LS
Component Locations
1999 Buick Regal LSSECTION Component Locations
COMPONENT LOCATIONS
| Component | Location | |||
|---|---|---|---|---|
| Accessory Time Delay Relay | Behind Glove Box, Mounted To Cross-Car Beam | |||
| Body Control Module (BCM)(1) | Behind Left Side Of Instrument Panel, To Left Of Steering Column | |||
| Data Link Connector (DLC) | Behind Left Side Of Instrument Panel, To Right Of Steering Column | |||
| Daytime Running Light (DRL) Control Module(1) | Behind Left Side Of Instrument Panel, To Left Of Steering Column | |||
| Door Lock Components | ||||
| Actuator Motor | Rear Of Door Panel | |||
| Door Ajar Indicator Switch | Rear Of Door Panel | |||
| Door Lock Switch | Center Of Door Panel | |||
| Door Lock Relay | Behind Glove Box, Mounted To Cross-Car Beam | |||
| Electronic Brake Traction Control Module (EBTCM)(1) | Behind Left Side Of Instrument Panel, To Left Of Steering Column | |||
| Foglight & Driver Information Display Switch | On Left Side Of Instrument Panel, To Left Of Steering Column | |||
| Foglight Relay | In Underhood Accessory Wiring Junction Block | |||
| Fuse Block | Behind Right Side Of Instrument Panel, In Passenger's Door Opening | |||
| Headlight Switch | Upper Left Side Of Instrument Panel | |||
| Horn Relay | In Underhood Accessory Wiring Junction Block | |||
| Powertrain Control Module (PCM) | Front Left Corner Of Engine Compartment, Inside Air Cleaner | |||
| Remote Control Door Lock Receiver (RCDLR) | Behind Instrument Panel, Above Right Side Of Instrument Cluster | |||
| Splice Pack SP205 | Behind Left Side Of Instrument Panel, To Right Of Steering Column | |||
| Underhood Accessory Wiring Junction Block | Mounted To Right Front Strut Tower | |||
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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.