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.
1987 Cadillac SevilleFACTORY OEM SERVICE PROCEDURE
Control Units
CONTROL UNITS LOCATION
| Component | Location |
|---|---|
| Automatic Door Lock Module | Under right front seat. |
| Body Computer Module (BCM) | Behind glove box. See Figure. |
| Chime Module | Under right side of dash to right of glove box. See Figure. |
| Cooling Fan Control Module | On bottom of upper radiator support, to right of radiator. |
| Elect. Climate Control Power Module | In plenum on right side of firewall, in engine compartment. |
| Elect. Climate Control Programmer | Under right side of dash, on right side of plenum. See Figure. |
| Electronic Control Module (ECM) | Under right side of dash, near glove box. |
| Hazard/Turn Signal Module | On bracket under left side of dash, near steering column. |
| Sun Roof Timer Module | In right side of windshield header. |
| Theft Deterrent Module | Under left side of dash, near kick panel. See Figure. |
| Wiper/Washer Motor Module | On left side of firewall, in engine compartment. See Figure. |
Factory Service Tools
Use the Manual With the Right Hardware
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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.