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 MANUALSCHEVROLET2002SILVERADO 1500 HD, RWDREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROLS - SYSTEM & COMPONENT TESTINGENGINE SENSORS & SWITCHESMANIFOLD ABSOLUTE PRESSURE SENSOR (3.4L)TEST DESCRIPTION
2002 Chevrolet Silverado 1500 HD, RWD
Test Description
2002 Chevrolet Silverado 1500 HD, RWDSECTION Test Description
The number below refers to the step number in the diagnostic procedures.
- 2
This step tests the MAP sensor's ability to correctly indicate BARO. The BARO varies with altitude and atmospheric conditions. 103 kPa is the approximate BARO displayed by the MAP sensor at or near sea level.
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.