Final answer:
Technician A is right. Flash memory chips in a current Caterpillar ADEM ECM may not be removed. Technician B is also correct. The ADEM flash memory chip can be 'flashed' with new programming.
Step-by-step explanation:
Technician A is right. Flash memory chips in a current Caterpillar ADEM ECM (Electronic Control Module) may not be removed. These flash memory chips are typically soldered onto the motherboard of the ECM and are not designed to be easily replaceable. They store important programming and configuration data specific to the ECM.
On the other hand, Technician B is also correct. The ADEM flash memory chip can be 'flashed' with new programming. This means that the chip can be updated with new software or data to modify the behavior of the ECM. However, this process typically requires specialized equipment and knowledge.