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.
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HOMESERVICE MANUALSCHEVROLET2009TAHOE BASE, 4.8 CREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 269 (HVAC SYSTEM - AUTOMATIC)SPECIFICATIONSSENSOR RESISTANCE TABLE
2009 Chevrolet Tahoe Base, 4.8 C
Sensor Resistance Table
2009 Chevrolet Tahoe Base, 4.8 CSECTION Sensor Resistance Table
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2010 GMC Yukon XL, 2010 GMC Yukon, 2010 Chevrolet Tahoe, 2010 Chevrolet Suburban, and 2010 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
| Temperature | Ambient Air Temp Sensor or Evaporator Temp Sensor | Inside Air Temp Sensor (Front or Rear) | Front Upper Duct Temp Sensors | Heater Duct (Lower Air Temp) Sensors, Air Temperature Sensor - Upper Auxiliary and Air Temperature Sensor - Lower Auxiliary | |
|---|---|---|---|---|---|
| °C | °F | (K ohms) | (K ohms) | (K ohms) | (K ohms) |
| -40 | -40 | 333.6 | 174.5 | 104.1 | 100.9 |
| -35 | -31 | 241.1 | 125.1 | 74.4 | 72.3 |
| -30 | -22 | 176.1 | 90.7 | 53.8 | 52.6 |
| -25 | -13 | 129.9 | 66.5 | 39.3 | 38.6 |
| -20 | -4 | 96.8 | 49.3 | 29 | 28.6 |
| -15 | 5 | 72.8 | 36.9 | 21.6 | 21.4 |
| -10 | 14 | 55.3 | 27.9 | 16.3 | 16.1 |
| -5 | 23 | 42.3 | 21.3 | 12.4 | 12.3 |
| 0 | 32 | 32.7 | 16.4 | 9.5 | 9.4 |
| 5 | 41 | 25.4 | 12.7 | 7.3 | 7.3 |
| 10 | 50 | 19.9 | 10 | 5.7 | 5.7 |
| 15 | 59 | 15.7 | 7.9 | 4.5 | 4.4 |
| 20 | 68 | 12.5 | 6.3 | 3.5 | 3.5 |
| 25 | 77 | 10.0 | 5.0 | 2.8 | 2.8 |
| 30 | 86 | 8.1 | 4.0 | 2.2 | 2.2 |
| 35 | 95 | 6.5 | 3.3 | 1.8 | 1.8 |
| 40 | 104 | 5.3 | 2.7 | 1.5 | 1.5 |
| 45 | 113 | 4.4 | 2.2 | 1.2 | 1.2 |
| 50 | 122 | 3.6 | 1.8 | 1.0 | 1.0 |
| 55 | 131 | 3.0 | 1.5 | 0,8 | 0.8 |
| 60 | 140 | 2.5 | 1.2 | 0.7 | 0.7 |
| 65 | 140 | 2.1 | 1.0 | 0.6 | 0.6 |
| 70 | 158 | 1.8 | .9 | 0.5 | 0.5 |
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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.