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.
2009 Hummer H3 Base, AutomaticFACTORY OEM SERVICE PROCEDURE
Disassembled Views
| Callout | Component Name |
|---|---|
| 1 | Brake Master Cylinder Reservoir |
| 2 | Reservoir Pin |
| 3 | Brake Master Cylinder Grommet |
| 4 | Brake Master Cylinder Grommet |
| 5 | Electronic Brake and Traction Control Module Bolt |
| 6 | Electronic Brake and Traction Control Module Locator |
| 7 | Brake Fluid Level Indicator Wiring Harness Bracket |
| 8 | Power Brake Booster Pump Fluid Accumulator |
| 9 | Power Brake Booster Pump Fluid Accumulator (O-Ring) Seal |
| 10 | Power Brake Booster Pump Fluid Accumulator Fitting Spring |
| 11 | Power Brake Booster Pump Fluid Accumulator Fitting |
| 12 | Power Brake Booster Outlet Front Pipe |
| 13 | Power Brake Booster Pump Inlet Hose Clamp |
| 14 | Power Brake Booster Inlet Hose |
| 15 | Power Brake Booster Pump Harness Strap Bolt |
| 16 | Electronic Brake Control Wiring Plug |
| 17 | Power Brake Boost Pump Bracket ASM Bolt |
| 18 | Power Brake Booster Pump Damper Retainer |
| 19 | Power Brake Boost Pump Bracket |
| 20 | Power Brake Booster Pump Locator Pin |
| 21 | Power Brake Booster Pump Damper |
| 22 | Power Brake Booster Pump Damper Retainer |
| 23 | Power Brake Booster Pump Harness Strap |
| 24 | Power Brake Booster Pump ASM Motor |
| 25 | Electronic Brake and Traction Control Module ASM Gasket |
| 26 | Electronic Brake and Traction Control (w/Brake Pressure Modulator Valve) ASM Module |
| 27 | Brake Master Cylinder Spacer |
| 28 | Brake Pedal Push Rod Boot |
| 29 | Brake Pedal Push Rod Clevis |
| 30 | Brake Pedal Push Rod Clevis Nut |
| 31 | Brake Master Cylinder Spacer |
| 32 | Brake Master Cylinder Spacer Gasket |
| 33 | Brake Master Cylinder |
| 34 | Brake Master Cylinder Reservoir Bolt |
| 35 | Brake Master Cylinder Reservoir ASM Cap |
| 36 | Brake Fluid Level Indicator Wiring Harness Bracket Bolt |
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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