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 MANUALSCADILLAC1985CIMARRON V6-173 2.8LREPAIR AND DIAGNOSISTECHNICAL SERVICE BULLETINSALL TECHNICAL SERVICE BULLETINSHEADLAMP LIGHT SENSOR MODULE - NEW DESIGN
1985 Cadillac Cimarron V6-173 2.8L
Headlamp Light Sensor Module - New Design
1985 Cadillac Cimarron V6-173 2.8LSECTION Headlamp Light Sensor Module - New Design
91cadillac01
NO.: 91-I-26
DATE: Jan. 1991
GROUP: 9
CORP. NO.: 019018
SUBJECT: NEW TWILIGHT SENTINEL MODULE SERVICE PART
A new twilight sentinel module, P/N 5976634, has been released to service 1985-1989 DeVilles and Fleetwoods, 1984-1989 Broughams, 1984-1985 Eldorados and Sevilles, and 1984-1987 Cimarrons. This module has been revised to prevent repeat failures due to electrical system transients.
IMPORTANT. A twilight sentinel module failure will not cause a loss of headlights while driving.
Parts are currently available from GMSPO.
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.