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 MANUALSOLDSMOBILE1989DELTA 88 V6-3800 3.8LREPAIR AND DIAGNOSISCRUISE CONTROLBRAKE SWITCH (CRUISE CONTROL)TESTING AND INSPECTION
1989 Oldsmobile Delta 88 V6-3800 3.8L
Brake Switch (Cruise Control): Testing and Inspection
1989 Oldsmobile Delta 88 V6-3800 3.8LSECTION Testing and Inspection
1. Turn ignition switch to ON position. Turn the cruise control to the ON position.
2. Connect test light to ground.
3. Probe at both sides of brake switch connector (see schematic diagrams for color codes). Lamp should illuminate on one wire.
4. If lamp did not illuminate on either wire, check wiring circuit and fuses going to the switch.
5. Check switch adjustment by putting test lamp on wire that did not light in step 3. Depress brake pedal 1/8 - 1/2 inch. Light should go on.
6. If lamp did not illuminate in step 5, and connections are good, replace the cruise control brake switch.
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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.