Originally Posted by Baraboyz

Take it to a mechanic. He will know better what to do!

Originally Posted by Stacy Morgan

Same with my truck. No power steering and no reverse on start up. 2019 Chevy 1500. Turn off wait 10 min start again everything works. Happened about 6 times in 5 months. Have not gone to dealer,

Originally Posted by Mandy Smith

I'm having the same problems with my 2019 chevy tahoe. Please help. Dealership says it's not throwing a code and can't help.

Originally Posted by BlaineBug

This topic concerns my 2019 GMC Yukon SLT. I wanted to reach out far and wide and see if anyone else has experienced a similar issue.

Back on January 13, I experienced this issue the first time. Here is a "copy and paste" of the same description that I have provided to the dealership where the vehicle presently sits as well as on other forums:

Drove to a destination this evening where the vehicle was parked for approximately 45 minutes. Upon getting back in and started the engine, I noticed that my gauge cluster was totally black. Similar to how it looks if you use the remote start, but I did not, as I had used the start button on the dash. So, I pressed the start button a second time, and the dash cluster, infotainment system, and HVAC system illuminated. However, immediately, I received a warning on the dash indicating that "steering assist is reduced, drive with care." I did not have any power steering what so ever. I also noticed that my headlights were not on, even though automatic lamps was enabled. I could turn the headlights on manually, but the automatic lamps function was not turning them on. Additionally, the heated seats would not work. Worst of all, when I shifted into either drive or reverse, I got no power to the wheels. The vehicle would just roll as if it was in neutral, and I could not leave my parking space.

I tried restarting a couple of times and the same outcome resulted each and every time.

So, to recap, what did I notice that did not work?

1) After engine started, the dash cluster, infotainment system, and HVAC controls were dark until start button was pressed a second time.
2) Tachometer reads nothing.
3) Oil pressure reads nothing.
4) Coolant temperature reads incorrectly.
5) No power steering with warning message on dash for “reduced steering assist.”
6) Stabili-Trac warning light steadily on.
7) No forward or reverse transmission gears.
8) No automatic headlights, but can be turned on manually.
9) No heated seats.

For the past few weeks I have also noticed that occasionally I would have to press the start button on the dash a second time in order to get the vehicle to start. This may be unrelated, but is worth mentioning. Additionally, there have been a couple of times where the vehicle’s starter seemed to hesitate while cranking, and/or would cut out briefly and restart again.

Lastly, I was just in last week for my rain sensing wipers, and was told that a new sensor had to be ordered.

I also have video footage of last night’s events that detail quite well what I was experiencing. Please contact me to see.

LINK TO VIDEO: https://www.youtube.com/watch?v=31w2FEdZuT4

Unfortunately, as much as I figured since the dealership claimed they didn't find anything out of ordinary the first time it was in on January 13th, I experienced the exact same set of symptoms yesterday on February 21st. However, this time, I restarted the vehicle a couple of times and was able to get all of the electronics back to normal, which was when I was able to drive to the dealership, rather than wait on a tow.

Since there are no codes stored, I am not confident in a suitable long term being performed, once again. Obviously, the TSB # 18-NA-161 that they performed back in mid January did nothing. Which of course it didn't because they claimed to not find anything out of the ordinary back then either.

Has anyone else with a Silverado or Sierra experienced anything like this? Obviously, TSB # 18-NA-161 does contain some of the symptoms I am experiencing but definitely not all of them. I am having many more electrical failures than what is listed in this TSB.

The dealership where it sits again claims that they might be contacting General Motors for assistance, but my confidence in a solid repair is even lower than it was the last time it was given back to me. "Could not duplicate customer concern" as usual.

Originally Posted by the newbury

we just had this occur to us with our Tahoe. Did you get any positive results?

Originally Posted by AthenaSweety

Hola, buenas tardes a todos. Soy una chica a la que le gusta saber todo sobre autos, lo que puedo contarte del problema que tiene su trabajo, sin importar si tiene 1000 millas o 100,000, es que es eléctrico, luego la resistencia y todo lo que tienes que hacer. . mira con que empezará a fallar cuando haces un giro cuando haces una tabla repetidamente en algunas ocasiones el camión se defenderá y se protegerá solo, entonces es cuando tienen que buscar la manera de reiniciar el equipo y desconectar el Batería el cable negativo durante unos 15 minutos, los primeros 10 minutos tienes que encender las luces para que esto funcione. o pueden llevarlo al concesionario pero no es realmente necesario también hay un programa que puedes descargar en tu computadora, conectarlo al camión y reprogramarlo tú mismo es completamente fácil.
También es importante que revises el Prefuse Cwnter, es algo que está por encima de la batería, revisa que todo esté bien conectado que no esté sucio ni suelto, porque de ahí viene toda nuestra seguridad de nuestro camión a la hora de manipular esos fusibles. son los que nos hacen que el camión no funciona porque el stering poder deja de funcionar, que los que se apagan cuando se está en el camino, etc. Gracias, voy a publicar fotos 😎

Originally Posted by BlaineBug

I would be interested to see how you G141 ground looks. If you take off the passenger wheel you can pull back the carpeted wheel well liner and look. It's basically right in front of the passenger compartment at the very bottom, very easy to access.

Last week I actually took this ground back off and used the wire wheel on my drill to clean up the mating surfaces even better than what the GM technician did, and then once reassembled, I covered the area with black paint for corrosion resistance.

I haven't had a problem since they cleaned this ground and replaced the ECM (knock on wood!) but I felt the need to take a look for myself. I have to say my cleaning of the ground was much more thorough than what the technician did, although that is to be expected.

Originally Posted by JJ2

I Have the same issue with my truck, dealership wants to charge me by the hour to track. I figured out turning off my lane keep assist, my truck does not experience this, so far for 9 mo. But now I want to address the ground issue, I am at 50k miles, I noticed this at about 40k. Thanks for the post, definitely getting stranded for a few hours at a time with kids on a road trip sucks, or at start up on the morning. GMC has to realize there is an issue, and should recall.