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 Buick Regal BaseFACTORY OEM SERVICE PROCEDURE
Section 249 (Sunroof System)
WARNING: This page is about a different car, the 2011 Buick Regal. However, it is still accessible from the selected car via links, so may be relevant.
- Specifications
- Wiring Schematics
- Diagnostic Information and Procedures
- Diagnostic Code Index
- DTC B3664
- DTC B3697
- DTC B369C
- Symptoms - Roof
- Power Sunroof/Sunshade Malfunction
- Repair Instructions
- Sunroof Actuator Trim Cover Replacement
- Sunroof Air Deflector Replacement
- Sunroof Air Deflector Cover Replacement
- Sunroof Drain Inspection and Cleaning
- Sunroof Housing Drain Gutter Replacement
- Sunroof Housing Replacement
- Sunroof Housing Front Drain Hose Replacement
- Sunroof Housing Rear Drain Hose Replacement
- Sunroof Window Motor Replacement
- Sunroof Motor/Actuator Initialization/Teach Process (New Motor)
- Sunroof Motor/Actuator Initialization/Teach Process (Existing Motor)
- Sunroof Sunshade Replacement
- Sunroof Window Seal Replacement - Outer
- Sunroof Window Seal Replacement - Inner
- Sunroof Window Rear Seal Replacement - Rear Window Side
- Sunroof Window Front Seal Replacement - Front Window Rear
- Sunroof Sunshade Switch Replacement
- Sunroof Switch Replacement (Hatchback, Sedan)
- Sunroof Window Height and Opening Fit Adjustment
- Sunroof Window Replacement - Front
- Sunroof Window Replacement - Rear
- Description and Operation
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.