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 MANUALSCHEVROLET2000S10/T10 P/U 2WD V6-4.3L VIN WREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSTESTING AND INSPECTIONSCAN TOOL TESTING AND PROCEDURESSCAN TOOL DATA, NORMAL VALUES AND DEFINITIONSSCAN TOOL DATA DEFINITIONS - POWERTRAIN SYSTEMSBARO
2000 Chevrolet S10/T10 P/U 2WD V6-4.3L VIN W
BARO
2000 Chevrolet S10/T10 P/U 2WD V6-4.3L VIN WSECTION BARO
Range (0-5 Volts): The BARO represents a measurement of the barometric air pressure. This measurement is determined by using the Manifold Air Pressure (MAP) sensor in order to determine manifold vacuum. This function is performed when the ignition is selected from OFF to ON, and during high throttle angle operations when manifold pressure equals ambient barometric pressure. This parameter is scaled in volts which is the raw output from the MAP sensor prior to being converted by the VCM to kPa.
Range (62 kPa-104 kPa): The VCM calculates the displayed BARO parameter from the MAP sensor when the ignition is selected from OFF to ON and at WOT conditions. The BARO parameter represents local ambient barometric pressure. The VCM uses the displayed BARO reading in order to compensate engine fueling differences for changes in altitude. This parameter is scaled in kilo pascals (k/pa).
Range (62 kPa-104 kPa): The VCM calculates the displayed BARO parameter from the MAP sensor when the ignition is selected from OFF to ON and at WOT conditions. The BARO parameter represents local ambient barometric pressure. The VCM uses the displayed BARO reading in order to compensate engine fueling differences for changes in altitude. This parameter is scaled in kilo pascals (k/pa).
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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.