Manifold Pressure/Vacuum Sensor

B74 Manifold Absolute Pressure Sensor (L99 or LS3)

RPO L99 - Engine VIN J, Gas 8 Cylinder, 6.2L, SFI, Aluminum, GM
RPO LS3 - Engine VIN W, Gas 8 Cylinder, 6.2L, SFI, Aluminum, HO, GM