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 MANUALSCADILLAC1993DEVILLE BASE, 4D SEDANREPAIR AND DIAGNOSISBODY & FRAMESEATS - POWER MEMORYTROUBLE SHOOTINGSEAT BACK INERTIA LOCK SYSTEM OPERATION CHECKON-VEHICLE CHECK
1993 Cadillac DeVille Base, 4D Sedan
On-Vehicle Check
1993 Cadillac DeVille Base, 4D SedanSECTION On-Vehicle Check
- With the driver buckled in the restraint system, and with the aid of an assistant in the rear seat (also buckled in the restraint system and holding the sides of the passenger seat back near the top with arms stiff and body relaxed), drive the vehicle forward at about 10-15 MPH (16-24 km/h). Then quickly apply the brakes to stop as fast as possible without skidding the wheels.
- The seat back inertia lock should lock at the first locking position; the top of the seat back should not move forward more than 50 mm (2 inches). When doing this check on the driver's seat back, the driver should lean slightly forward.
- If either the driver or passenger seat back lock does not lock on the first locking position, go to OFF-VEHICLE CHECK .
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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.