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 DIAGNOSISBODY AND FRAMEBODY CONTROL SYSTEMSBODY CONTROL MODULEDESCRIPTION AND OPERATIONBODY CONTROL SYSTEM CIRCUIT DESCRIPTIONINADVERTENT EXTERIOR LAMP CONTROL
1997 Cadillac Seville SLS V8-4.6L VIN Y
Inadvertent Exterior Lamp Control
1997 Cadillac Seville SLS V8-4.6L VIN YSECTION Inadvertent Exterior Lamp Control
The PZM automatically turns off the exterior lamps after ten minutes if the headlamp switch has been accidentally left on after the ignition has been turned to the "LOCK" or "ACC" position. Exterior lamps are restored under the following conditions:
^ The PZM wakes up from a power down.
^ The ignition switch is turned to the "RUN" or "START" position.
^ The PZM receives a serial data message from the IPC that the parklamp switch has been cycled.
^ The PZM enables exterior lamp power for RFA or theft deterrent flash.
^ The PZM wakes up from a power down.
^ The ignition switch is turned to the "RUN" or "START" position.
^ The PZM receives a serial data message from the IPC that the parklamp switch has been cycled.
^ The PZM enables exterior lamp power for RFA or theft deterrent flash.
RENDER: 1.0x
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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.