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.
1996 Cadillac Seville SLSFACTORY OEM SERVICE PROCEDURE
Anti-Lock Brake System DTCS
ANTI-LOCK BRAKE SYSTEM DTCS
| OEM Code | Description |
|---|---|
| 21 | RIGHT FRONT WHEEL SPEED SENSOR FAULT |
| 23 | RIGHT FRONT WHEEL SPEED SENSOR CONTINUITY FAULT |
| 25 | LEFT FRONT WHEEL SPEED SENSOR FAULT |
| 27 | LEFT FRONT WHEEL SPEED SENSOR CONTINUITY FAULT |
| 28 | WHEEL SPEED SENSOR FREQUENCY ERROR |
| 31 | RIGHT REAR WHEEL SPEED SENSOR FAULT |
| 33 | RIGHT REAR WHEEL SPEED SENSOR CONTINUITY FAULT |
| 35 | LEFT REAR WHEEL SPEED SENSOR FAULT |
| 37 | LEFT REAR WHEEL SPEED SENSOR CONTINUITY FAULT |
| 41 | RIGHT FRONT INLET VALVE SOLENOID FAULT |
| 42 | RIGHT FRONT OUTLET VALVE SOLENOID FAULT |
| 43 | RIGHT FRONT TCS PRIME VALVE SOLENOID FAULT |
| 44 | RIGHT FRONT TCS ISOLATION VALVE SOLENOID FAULT |
| 45 | LEFT FRONT INLET VALVE SOLENOID FAULT |
| 46 | LEFT FRONT OUTLET VALVE SOLENOID FAULT |
| 47 | LEFT FRONT TCS PRIME VALVE SOLENOID FAULT |
| 48 | LEFT FRONT TCS ISOLATION VALVE SOLENOID FAULT |
| 51 | RIGHT REAR INLET VALVE SOLENOID FAULT |
| 52 | RIGHT REAR OUTLET VALVE SOLENOID FAULT |
| 55 | LEFT REAR INLET VALVE SOLENOID FAULT |
| 56 | LEFT REAR OUTLET VALVE SOLENOID FAULT |
| 61 | BPM VALVE PUMP MOTOR FAULT |
| 63 | BPM VALVE POWER SUPPLY FAULT |
| 67 | TCC/BLS BRAKELIGHT SWITCH FAULT |
| 71 | ELECTRONIC BRAKE & TRACTION CONTROL MODULE (EBTCM) INTERNAL FAULT |
| 72 | IPC SERIAL DATA LINE FAULT |
| 73 | PCM - EBTCM TCS INTERNAL FAULT |
| 77 | PCM SERIAL DATA LINE FAULT |
| 83 | LOW BRAKE FLUID LEVEL |
| 85 | LOW VOLTAGE |
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.