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 MANUALSCADILLAC1997SEVILLE SLS V8-4.6L VIN YREPAIR AND DIAGNOSISRELAYS AND MODULESRELAYS AND MODULES - POWERTRAIN MANAGEMENTRELAYS AND MODULES - COMPUTERS AND CONTROL SYSTEMSBODY CONTROL MODULEDESCRIPTION AND OPERATIONBODY CONTROL SYSTEM CIRCUIT DESCRIPTIONTIME OF DAY DISPLAY
1997 Cadillac Seville SLS V8-4.6L VIN Y
Time of Day Display
1997 Cadillac Seville SLS V8-4.6L VIN YSECTION Time of Day Display
The time of day is maintained by a real time Clock Internal to the PZM. The time of day is broadcast as a Class 2 message over the serial data bus. The radio receives this data and displays it. Changing the time of day is accomplished through the "hour" and "minute" buttons on the front of the radio. These button presses are translated by the radio which then sends a Class 2 message requesting a change in the time to the PZM. The radio itself does not maintain the time.
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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.