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.
No Codes Set - "Service CCR System" Message Displayed
1991 Cadillac Seville STSSECTION No Codes Set - "Service CCR System" Message Displayed
If the control module loses any of the following inputs, a "SERVICE CCR SYSTEM" message will display, but no codes will be set:
- Power (Message displayed under 10 MPH only).
- Message signal (Message displayed under 10 MPH only).
- Speed signal (Message displayed over 10 MPH only).
- System Ground.
RENDER: 1.0x
NO RELATED
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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.