All have a speed sensor on the top of the rear axle. If four wheel abs it will also have a sensor at each front wheel bearing.
Dodge does not use Mass Airflow Sensors on it's 1500 trucks.
2 sensors
No, Dodge doesn't use maf sensors.
The 5.2L has two oxygen sensors.
It is blinking because there is a problem with the Antilock Brake System (ABS). Seek professional help. Your normal brakes will still work as they should even though the ABS may not.
Two.
THERE ARE 2
Inside the transmission...
2
Four
Vacuum
No. The control solenoid and sensors are not the same.