RPM, oil pressure dead and overhead fuel avg+instant show 99.9

The 3 issues started at the same time.
The instrument panel RPM and Oil Pressure are dead (needles do not move). Overhead fuel average and instant show 99.9 at all times. All other dash panel and overhead data and gauges work fine.

No error codes from OBDII testing system (professional OBDII system)
OBDII reads RPM, fuel avg and instant perfectly and values as they should be. No oil pressure values present from reader. It seems these don't get read by OBDII.

Instrument cluster professionally tested and certified good.

All fuses are good

Disconnected battery for 5 days to reset all systems.
Unplugged and replugged all connectors to Engine ECU and instrument panel.

and yes, on overhead panel, we reset fuel data by push both buttons to clear the fuel avg data but still get 99.9.

Do the 3 instruments, RPM, oil pressure and overhead fuel avg+instant come from Engine ECU or other source?

Does the data come over a CAN bus network or individual wires to their respective output gauge?

Any idea why all 3 are not working?

Thanks

4/20/2024 update: To my complete shock while driving on gravel road to run the 4x4 mode and shifting into 4 LOW as soon as I did all the gauges started working. All I can figure is the firmware code running on the engine ECU got a subroutine triggered that woke up the code that is responsible to sending data to those 3 gauges (RPM, Oil pressure & overhead panel fuel economy). Just thought I'd pass this on if any others have this problem try shifting into 4WD Low.