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.
2012 GMC Terrain AWD V6-3.0LFACTORY OEM SERVICE PROCEDURE
Power Mirror Control Module: Locations
Door Component Views
Driver Door Components
1 - A23D Door Latch Assembly - Driver
2 - A9A Outside Rearview Mirror - Driver
3 - E1C Accent Lamp - Driver Door Handle (LTZ or SLT)
4 - K96L Mirror Control Module - Left (LTZ or SLT)
5 - S52S Outside Rearview Mirror Switch
6 - P19G Speaker - Left Front
7 - M74D Window Motor - Driver
8 - B63LF Side Impact Sensor - Left Front
9 - S79D Window Switch - Driver
10 - E1D Accent Lamp - Driver Door (LTZ or SLT)
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:
- • 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.