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 H2 4D Utility PickupFACTORY OEM SERVICE PROCEDURE
Disassembled Views
| Callout | Component Name |
|---|---|
| 1 | Master Cylinder Reservoir Cap |
| 2 | Master Cylinder Reservoir |
| 3 | Master Cylinder Reservoir Roll Pin |
| 4 | Electronic Brake and Traction Control Module Bolt |
| 5 | Power Brake Booster Pump Fluid Accumulator |
| 6 | Power Brake Booster Pump Fluid Accumulator O-Ring Seal |
| 7 | Power Brake Booster Pump Fluid Accumulator Fitting Spring |
| 8 | Power Brake Booster Pump Fluid Accumulator Fitting |
| 9 | Power Brake Booster Pump Fluid Inlet Hose Assembly |
| 10 | Power Brake Booster Pump Fluid Inlet Hose Assembly Roll Pin |
| 11 | Power Brake Booster Outlet Front Pipe |
| 12 | Power Brake Booster Pump Motor |
| 13 | Power Brake Booster Pump Motor Wire Harness Terminal Screws |
| 14 | Power Brake Booster Pump Motor Wire Harness Terminal Plug |
| 15 | Power Brake Booster Pump Motor Bracket Bolt |
| 16 | Power Brake Booster Pump Motor Bracket Damper Retainer |
| 17 | Power Brake Booster Pump Motor Bracket Damper |
| 18 | Power Brake Booster Pump Motor Bracket |
| 19 | Power Brake Booster Pump Motor Damper Pins |
| 20 | Power Brake Booster Pump Motor Damper |
| 21 | Brake Fluid Level Indicator Wire Harness Bracket Bolt |
| 22 | Brake Fluid Level Indicator Wire Harness Bracket |
| 23 | Electronic Brake and Traction Control Module |
| 24 | Electronic Brake and Traction Control Module Gasket |
| 25 | Brake Master Cylinder with Power Brake Booster and Chassis Control Module Assembly Gasket |
| 26 | Brake Master Cylinder with Power Brake Booster and Chassis Control Module Assembly Spacer Bolt |
| 26 | Brake Master Cylinder with Power Brake Booster and Chassis Control Module Assembly Spacer Bolt |
| 27 | Brake Master Cylinder with Power Brake Booster and Chassis Control Module Assembly Spacer |
| 28 | Brake Master Cylinder |
| 29 | Master Cylinder Reservoir Grommet |
| 30 | Master Cylinder Reservoir Bolt |
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.