What is trouble code p0523 for chevrolet silver ado 1500?

Start it up and it might then

Check the brake pedal. Does it have a switch on it that turns on the break lights? located right under the dashboard? Is the pedal or the switch adjusted wrong, so it does not click off when the pedal is released?

Are you saying your diff. went BANG!!!!!

Most of the time its is the oil pressure sensor that fails, with that code. The oil pressure gauge in the dash might be peg to the right too.

was it at 0 while it was running, did you check the oil? i wouldn't start drive it like that without being sure its still pumping oil...

That is a question you ask a trans repair shop

Depends on wether you pull it or they do & what needs
to be done

possibly a loose or bad parking brake sensor which should be located near the top of the parking brake arm, may require removing the lower panel of the dash cover to see it clearly.

For systems that have the SET button: Press SET: Within 5 seconds, press and hold the right SEEK button until the correct minute time is reached. Hold the SET button and then the left SEEK button until the right hour time is reached.
For systems with HR and Min buttons: Press and hold the hour button until the correct hour is on the display and do the same for the minute button.

Here is a free printable 2022 chevy silver ado 1500 owners manual also: http://www.manualowl.com/am/Chevrolet/2002-Silverado%201500%20Pickup/Manual/357

Check your bulbs. They are dual filement bulbs. If one of the filements is bad it will cause this problem.

It is on the charcoal filtering canister (engine compartment on fender wall) that your gas tank's vapor lines attach to. If you have a trouble code from this you can first try spraying it with some carb cleaner and using a small screwdriver to free up the plunger that gets stuck and causes this problem, or else just replace it. Hope this helps and let me know if you need any further assistance