Sierra 1500 2WD V8-5.3L Hybrid (2004)
Compass: Description and Operation
COMPASS
The mirror uses 2 magnetic field sensors for compass direction. One sensor is for north and south, the other is for east and west. The mirror supplies a
signal and low reference to each sensor. As the vehicle travels with or against the earth's magnetic pull, there will be a change in voltage on one or both
sensors. As a result of the change in voltage, the mirror changes the heading on the compass display.
