The speedometer, gauges and warning light are not working, fault code: DIM E003 and CEM A156?

DIM E003: This code indicates a fault in the Driver Information Module (DIM).

CEM A156: This code points to a problem in the Central Electronic Module (CEM).

So, I would start by checking the fuses this guide can help:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

If the fuses are good chances are the IPC (DIM) has gone bad, here is how to change it out in case you need it. Check out the images (below). Let us know what happens and please upload pictures or videos of the problem so we can see what's going on.

From the description, it was referring to communication line faulty, there are no communication between those modules. The DIM was replaced with a used one and I used scanner to actuate the gauges, lights and warning lights and it all worked. Then I reset the fault code and cycle ignition twice and rescan and the code appears back before I decided to check the communication line first before any other thing. Does it need to be programmed when replaced?

Yes, it does need to be programmed.

Yes, it does need to be programmed. What special function of the scanner will I use for the programming or how do I program it with scanner?

Sure, here is a good one for only $1,100.00, the snap on version costs $7,500.00.

https://amzn.to/3KKIFID

Please let us know what happens.