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.
1998 Cadillac DeVille BaseFACTORY OEM SERVICE PROCEDURE
Right Mirror Does Not Move Manually
NOTE:
After repair or component replacement is completed, perform MEMORY SYSTEM CHECKΒ
under TESTING - SYSTEM CHECKS to verify system is operating properly.
- Perform MEMORY SYSTEM CHECKΒ under TESTING - SYSTEM CHECKS. Go to next step.
- Using mirror select switch, select right mirror. Using test light, backprobe between outside mirror switch connector terminals "E" (Orange wire) and "C" (Brown wire). Move mirror switch down. Move mirror switch left. Backprobe between outside mirror switch connector terminals "D" (Black wire) and "C" (Brown wire). Move mirror switch up. Move mirror switch right. If test light illuminates at all positions, go to next step. If test light does not illuminate at all positions, go to step 6).
- If right mirror operates in all directions during memory recall function, go to next step. If right mirror does not operate in all directions during memory recall function, go to step 5).
- Repair open in circuit No. 303 (Brown wire) between outside mirror switch and MMM connector C1. See WIRING DIAGRAMSΒ .
- Replace Memory Mirror Module (MMM).
- Replace outside mirror switch. See MIRRORS - POWER article.
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.
