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 Adventure, AutomaticFACTORY OEM SERVICE PROCEDURE
Transfer Case Disassembled View
| Callout | Component Name |
|---|---|
| 1 | Adapter Stud |
| 2 | Front Case Half |
| 3 | Location Pin |
| 3 | Location Pin |
| 4 | Fuel Line Bracket |
| 5 | Vehicle Speed Sensor O-Ring Seal |
| 6 | Vehicle Speed Sensor |
| 7 | Heat Shield |
| 8 | Output Shaft Bushing |
| 9 | Rear Output Shaft Seal |
| 10 | Fill Plug |
| 11 | Shift Shaft Seal |
| 12 | D-Ring Seal |
| 13 | Encoder Motor |
| 14 | Encoder Motor Bolt |
| 15 | Encoder Motor Bracket Bolt |
| 16 | Case Half Bolt |
| 17 | Wiring Harness Bracket |
| 18 | Drain Plug |
| 19 | Rear Case Half |
| 20 | Magnet |
| 21 | Front Output Shaft Seal |
| 22 | Front Output Shaft Flange |
| 23 | Front Output Shaft Flange Seal |
| 24 | Front Output Shaft Flange Washer |
| 25 | Front Output Shaft Flange Nut |
| 26 | Vent |
| 27 | Input Shaft Seal |
| Callout | Component Name |
|---|---|
| 200 | Input Gear Bearing |
| 201 | Ring Gear |
| 202 | Ring Gear Retaining Ring |
| 203 | High/Low Planetary Carrier Assembly |
| 203 | High/Low Planetary Carrier Assembly |
| 204 | Mainshaft Front Support Bearing |
| 205 | High/Low Range Sleeve |
| 205 | High/Low Range Sleeve |
| 206 | High/Low Range Shift Fork Assembly |
| 207 | Shift Fork Shaft |
| 208 | Input Gear Thrust Bearing |
| 209 | Mainshaft |
| 210 | Oil Pump |
| 211 | Oil Pump Hose Clamp |
| 212 | Oil Pump Hose |
| 213 | Oil Pump Screen |
| 214 | Upper Center Bearing Support Thrust Washer |
| 215 | Bearing |
| 216 | Snap Ring |
| 217 | Center Bearing Support |
| 218 | Lower Center Support Bearing Thrust Washer |
| 219 | Shift Cam |
| 220 | Shift Shaft Torsional Spring |
| 221 | Shift Shaft Spacer |
| 222 | Shift Shaft |
| 223 | Inner Lockup Hub |
| 224 | Lockup Mode Shift Collar Assembly |
| 225 | Lockup Mode Shift Fork |
| 226 | Shift Fork Shaft Spring |
| 227 | Drive Sprocket Bushing |
| 228 | Drive Sprocket |
| 229 | Drive Chain |
| 230 | Front Output Sun Gear |
| 231 | Planetary Differential Assembly |
| 232 | Rear Output Shaft Thrust Washer |
| 233 | Rear Output Sun Gear |
| 234 | Mainshaft Rear Support Bushing |
| 235 | Rear Output Shaft |
| 236 | Rear Output Shaft Bearing Outer Retaining Ring |
| 237 | Rear Output Shaft Bearing |
| 238 | Rear Output Shaft Bearing Retaining Ring |
| 239 | Speed Sensor Tone Wheel |
| 240 | Front Output Shaft Rear Bearing |
| 241 | Driven Gear |
| 242 | Front Output Shaft |
| 243 | Front Output Shaft Front Bearing |
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.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.