edwadway

Hello I’m from the South , I have an 1992 GMT400 / C1500 4.3 Liter V6 Automatic, I am having rough idle, I have changed the MAP , Throttle Position Sensor, EGR valve, EGR Solenoid, ETC Coolant Temperature sensor on intake manifold, IAC on Throttle body, still having mirrors shake at stop sign, run smooth when accelerating, but sitting at a light idling, runs bad, please help? Also changed the O2 Sensor, also replace Fuel pressure regulator, bought 2 Fuel injectors, but had one installed backwards, and need to correct it, not sure what else to do. Bought a Vapor vent valve, but don’t know where it goes.

My truck has bees showing this error code and only 4000 miles “Service Driver Assist system” need to Dealership twice for this problem, and they don’t know the fix. It still under warranty. Awaiting a fix.