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 AlphaFACTORY OEM SERVICE PROCEDURE
Transmission General Specifications
| Name | Hydra-matic 4L60-E |
|---|---|
| RPO Codes | M30 |
| Production Location | Toledo, Ohio |
| Vehicle Platform, Engine/Transmission, Usage | N Truck (H3) |
| Transmission Drive | Longitudinally-Mounted Rear Wheel Drive |
| 1st Gear Ratio | 3.059:1 |
| 2nd Gear Ratio | 1.625:1 |
| 3rd Gear Ratio | 1.000:1 |
| 4th Gear Ratio | 0.696:1 |
| Reverse | 2.294:1 |
| Torque Converter Size, Diameter of Torque Converter Turbine | 258 mm 164 K |
| Pressure Taps | Line Pressure |
| Transmission Fluid Type | DEXRON® VI |
| Transmission Fluid Capacity, Approximate | 258 mm Converter Dry: 8.8 l (9.3 qt) |
| Transmission Type: 4 | Four Forward Gears |
| Transmission Type: L | Longitudinal Mount |
| Transmission Type: 65 | Product Series |
| Transmission Type: E | Electronic Controls |
| Position Quadrant | P, R, N, Overdrive (Circle D), D, 2, 1 P, R, N, Overdrive (Circle D), 3, 2, 1 |
| Case Material | Die Cast Aluminum |
| Transmission Weight Dry, Approximate | 258 mm Converter 79.9 kg (176.6 lbs) |
| Transmission Weight Wet, Approximate | 258 mm Converter 89.2 kg (197.7 lb) |
| Maximum Trailer Towing Capacity | 6 130 kg (13,500 lb) |
Factory Service Tools
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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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