1995 Blazer with Vortec V-6 was running fine until 4 days ago. Check engine light came on, now it starts and idles fine, but when placed in gear, idle drops, engine bogs and dies. I am targeting the Idle Air Control Valve. Is this the most likely cause of my problem, or could it be another sensor? Thanks

There is no such thing as an IAC or a MAF sensor on a 95 vortec V6. However, there is a IAT (Intake Air Temperture) sensor, and a MAP(Manifold Absolute Pressure) sensor. The MAP sensor changes the fuel delivery and timing. The IAT sensor is for regulating the exhaust-gas recirculation, And it cause long hard starts, fuel economy and spark knock. There is no such thing as an IAC or a MAF sensor on a 95 vortec V6. However, there is a IAT (Intake Air Temperture) sensor, and a MAP(Manifold Absolute Pressure) sensor. The MAP sensor changes the fuel delivery and timing. The IAT sensor is for regulating the exhaust-gas recirculation, And it cause long hard starts, fuel economy and spark knock.