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.
2003 Cadillac DeVille BaseFACTORY OEM SERVICE PROCEDURE
Cruise Control DTCS
CRUISE CONTROL DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description |
|---|---|
| DTC P0574 | Vehicle Speed High |
| DTC P1554 | Cruise Engaged Signal From Cruise Control Module, While Inhibiting Cruise Control Operation |
| DTC P1560 | Shift Lever Placed In Neutral Or Transaxle Range Indicates Neutral Position During Cruise |
| DTC P1564 | Rapid Rate Of Vehicle Acceleration |
| DTC P1566 | Engine Speed More Than The 6300 RPM |
| DTC P1567 | Active Braking Control System Engaged |
| DTC P1570 | Traction Control Is Active |
| DTC P1574 | 2.5 MPH Or Greater Decrease In Non-Drive Wheel Speed |
| DTC P1575 | Extended Travel Brake Switch Circuit Voltage |
| DTC P1585 | Improper Voltage Level On The Cruise Control Inhibit Signal Circuit |
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.