EGR Pintle Position
WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 1994 GMC Yukon, 1994 GMC Suburban, 1994 GMC Pickup, 1994 GMC Cab & Chassis, and 1994 GMC C3500 HD. However, it is still accessible from the selected car via links, so may be relevant.
Used on most 4.3L and all 7.4L engines. This sensor is mounted inside linear EGR valve and informs PCM of EGR pintle movement. PCM uses this information to control EGR flow.