2020 Chevy High Country Silverado, 4 lights on

[Chevytruck2020]

6.2L, turned the truck on after snow and 4 lights came and have stayed on: service engine, traction control, ABS, and stability tract lights. Had the battery checked and it is good. P25A2, C0502, P0562, and U0140 are the codes. What else can I check?

[Jsdirt]

The "C" and "U" codes say to me there's probably some chaffed wiring underneath, or in the engine compartment somewhere.

 

Get the code definitions and a wiring diagram ( https://www.alldata.com/diy-us/en ) - that will tell you which sets of wires to look at.

 

That was my LEAST favorite job, besides interior work. A tedious, PITA. That's why my newest of 6 motor vehicles these days is a 1994 model, lol.

Edited May 11, 2025 by Jsdirt
Fixed F'ed up link ...