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.
1999 Oldsmobile Eighty-Eight BaseFACTORY OEM SERVICE PROCEDURE
Test 6: Lock-Out Feature Inoperative
- Disconnect master switch assembly 2-pin connector. Using DVOM connected to ground, backprobe master switch assembly 2-pin connector terminal "B" (Dark Blue wire). If battery voltage exists, go to next step. If battery voltage does not exist, replace master switch assembly. See WINDOW SWITCH under REMOVAL & INSTALLATION.
- Repair short to battery voltage in Dark Blue wire between master switch assembly connector terminal "B" and terminal "A" of other window switches. See WIRING DIAGRAMS .
Factory Service Tools
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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.