2019 Denali died while driving: code U1345/U01B0

[Crm318]

I was driving my 2019 Sierra Denali 6.2 4x4 today on the highway when all of a sudden, the truck dies. I pull off of the highway and try to restart, the accessories all come on, but the truck goes dead then I push the start button. I had a friend tow me home and we used a scanner to pop the codes U1345 and U01B0 which seem to be engine codes. I have also noticed I have gotten a malfunctioning parking brake notification a couple days before. What could this be? The battery also tested to be good at 12.5V.

Edited August 12, 2021 by Crm318

[gemarsh]

17 hours ago, Crm318 said:

I was driving my 2019 Sierra Denali 6.2 4x4 today on the highway when all of a sudden, the truck dies. I pull off of the highway and try to restart, the accessories all come on, but the truck goes dead then I push the start button. I had a friend tow me home and we used a scanner to pop the codes U1345 and U01B0 which seem to be engine codes. I have also noticed I have gotten a malfunctioning parking brake notification a couple days before. What could this be? The battery also tested to be good at 12.5V.

Have you tightened the fuse holder bolts? Or has a dealer? I would check them again anyways. Both codes have diagnostic symptoms of lost power to the 2 modules of your CEL codes.

[Crm318]

Where are those fuse holder bolts located?

I ended up towing it to the dealership. Before I did, I had onstar do a scan and  codes P1005 and C060B popped up.

[gemarsh]

14 hours ago, Crm318 said:

Where are those fuse holder bolts located?

I ended up towing it to the dealership. Before I did, I had onstar do a scan and  codes P1005 and C060B popped up.

In front of the battery. 

[Crm318]

Thank you. I'll let them know. They were able to get the truck in today and they said the starter was bad. Obviously, it has nothing to do with it dying on the highway, but they can't go further until it's replaced. 

[gemarsh]

6 hours ago, Crm318 said:

Thank you. I'll let them know. They were able to get the truck in today and they said the starter was bad. Obviously, it has nothing to do with it dying on the highway, but they can't go further until it's replaced. 

Let us know if the starter was really bad or not. I have a hard time believing that it is. 

[Benjaminhoegenhav]

Hello

did you find out what the problem was ?