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 VeranoFACTORY OEM SERVICE PROCEDURE
Automatic Transmission - 6T40 - Component Locator
- Component Locator
- Disassembled Views
- Case and Associated Parts
- Transmission Case Assembly - 6T30 - Gen 1
- Transmission Case Assembly - 6T30 - Gen 2
- Transmission Case Assembly - 6T40/6T45/6T50 - Gen 1
- Transmission Case Assembly - 6T40/6T45/6T50 - Gen 2
- Torque Converter and Fluid Pump Housing Assembly - 6T30
- Torque Converter and Fluid Pump Housing Assembly - 6T40/6T45/6T50
- Drive Link Assembly
- Oil Pump Assembly - 6T30
- Oil Pump Assembly - 6T40/6T45/6T50 - Gen 1
- Oil Pump Assembly - 6T40/6T45/6T50 - Gen 2
- Auxiliary Fluid Pump and Hybrid Components - Hybrid Models
- Control Valve Body Assembly (1 of 2 - Gen 1)
- Control Valve Body Assembly (2 of 2 - Gen 1)
- Control Valve Body Assembly (1 of 2 - Gen 2)
- Control Valve Body Assembly (2 of 2 - Gen 2)
- 3-5 Reverse Clutch Assembly - Gen 1
- 3-5 Reverse Clutch Assembly - Gen 2
- 4-5-6 Clutch Assembly - Gen 1
- 4-5-6 Clutch Assembly - Gen 2
- 2-6, Low and Reverse and 1-2-3-4 Clutch Plate Assemblies - Gen 1
- 2-6, Low and Reverse and 1-2-3-4 Clutch Plate Assemblies - Gen 2
- Input, Output and Reaction Gearsets - 6T30/6T40
- Input, Output and Reaction Gearsets - 6T45/6T50
- Front Differential Carrier Assembly (2 Pinion)
- Front Differential Carrier Assembly (4 Pinion)
- Park System Components
- Component Location
- Bushing, Bearing, and Washer Locations (Gen 2)
- Seal Locations (Gen 2)
- Ball Check Valve Locations (Gen 2)
- Disassembled Views
Factory Service Tools
Use the Manual With the Right Hardware
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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.
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