Some info about Accelerator Pedal Position Sensors (APPS):
This sensor is used to on your vehicle in place of a traditional throttle cable. Mounted on your gas pedal, it measures the driver's input on the gas pedal.
2003 GMC Yukon XL 2500 equipped with 8.1L V8 Gas OHV, 6.0L V8 Gas OHV
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GM Original Equipment--Reman=No-US ACD=Y-Can ACD=Y- PWR ADJ PEDALS(JF4) INCL POSITION SENSOR WITH ACCELERATOR PEDAL
2003 GMC Yukon XL 2500 equipped with 8.1L V8 Gas OHV, 6.0L V8 Gas OHV
GM Original Equipment--Reman=No-US ACD=Y-Can ACD=Y- PWR ADJ PEDALS(JF4) INCL POSITION SENSOR WITH ACCELERATOR PEDAL