C 1500 Truck 2WD V6-4.3L VIN W (2001)
Barometric Pressure Sensor: Description and Operation
BARO
The scan tool displays a range of 10-105 kPa and 0.00-5.00 volts. The barometric pressure (BARO) reading is determined from the manifold absolute
pressure (MAP) sensor signal. The PCM monitors the MAP signal during key up or wide-open throttle (WOT) conditions. The BARO compensates for
altitude differences.
