1999 Silverado 5.3. 145,000 miles. Truck accelerates on its own from stop. Have replaced MAF, MAP, TPS, IAC, plugs, wires, engine coolant sensor, throttle body gasket, both upstream O2 sensors. Took TB off and cleaned it. New PCV and grommet. Live data from obd says .4% on TPS. Not sure how to read rest of data or what my parameters or ranges should be. Have new electrical connectors for IAC and TPS coming.
any help is appreciated. No codes thrown. Thanks Gabe