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
Component Resistance
Component Resistance
| Component | Pass Thru Pins | Resistance at 20°C (68°F) | Resistance at 100°C (212°F) | Resistance to Ground (Case) |
|---|---|---|---|---|
| 1-2 Shift Solenoid Valve | A, E | 19-24 Ω | 24-31 Ω | Greater than 250 K Ω |
| 2-3 Shift Solenoid Valve | B, E | 19-24 Ω | 24-31 Ω | Greater than 250 K Ω |
| TCC Solenoid Valve | T, E | 21-26 Ω | 26-33 Ω | Greater than 250 K Ω |
| TCC PWM Solenoid Valve | U, E | 10-13 Ω | 13-15 Ω | Greater than 250 K Ω |
| Pressure Control Solenoid Valve | C, D | 3-6 Ω | 4-7 Ω | Greater than 250 K Ω |
| Vehicle Speed Sensor | A, B VSS CONN | 1377-2220 Ω (2WD) 1366-2000 Ω @ 25°C (77°F) (AWD/4WD) |
1800-3355 Ω (2WD) 2140 Ω @ 150°C (302°F) (AWD/4WD) |
Greater than 10 M Ω |
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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