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 MANUALSCHEVROLET2025TRAILBLAZER LS, 1.2L ENG VIN PREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE CONTROLS AND FUEL - 1.2L (LBP) - SPECIFICATIONSSPECIFICATIONSALTITUDE VERSUS BAROMETRIC PRESSURE
2025 Chevrolet Trailblazer LS, 1.2L Eng VIN P
Altitude Versus Barometric Pressure
2025 Chevrolet Trailblazer LS, 1.2L Eng VIN PSECTION Altitude Versus Barometric Pressure
Determine the current vehicle testing altitude.
The following table illustrates the relation between altitude and barometric pressure:
| Altitude | Barometric Pressure |
|---|---|
| 4267 m (14000 ft) | 56 to 64 kPa (8.1 to 9.3 PSI) |
| 3962 m (13000 ft) | 58 to 66 kPa (8.4 to 9.6 PSI) |
| 3658 m (12000 ft) | 61 to 69 kPa (8.8 to 10.0 PSI) |
| 3353 m (11000 ft) | 64 to 72 kPa (9.3 to 10.4 PSI) |
| 3048 m (10000 ft) | 66 to 74 kPa (9.6 to 10.7 PSI) |
| 2743 m (9000 ft) | 69 to 77 kPa (10.0 to 11.2 PSI) |
| 2438 m (8000 ft) | 71 to 79 kPa (10.3 to 11.5 PSI) |
| 2134 m (7000 ft) | 74 to 82 kPa (10.7 to 11.9 PSI) |
| 1829 m (6000 ft) | 77 to 85 kPa (11.2 to 12.3 PSI) |
| 1524 m (5000 ft) | 80 to 88 kPa (11.6 to 12.8 PSI) |
| 1219 m (4000 ft) | 83 to 91 kPa (12.0 to 13.2 PSI) |
| 914 m (3000 ft) | 87 to 95 kPa (12.6 to 13.8 PSI) |
| 610 m (2000 ft) | 90 to 98 kPa (13.1 to 14.2 PSI) |
| 305 m (1000 ft) | 94 to 102 kPa (13.6 to 14.8 PSI) |
| 0 m (0 ft) | 96 to 104 kPa (13.9 to 15.1 PSI) |
| -305 m (-1000 ft) | 101 to 105 kPa (14.6 to 15.2 PSI) |
RENDER: 1.0x
NO RELATED
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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.