Service Charging System

[Hyaw0]

My 2020 Silverado 1500 is displaying a message to "Service Charging System Vehicle May Stall". I've already taken it to the dealership 3 times and they've replaced the alternator twice and the ECU once. I'm still getting the same message. Any ideas?

[Jrodpic]

1 hour ago, Hyaw0 said:

My 2020 Silverado 1500 is displaying a message to "Service Charging System Vehicle May Stall". I've already taken it to the dealership 3 times and they've replaced the alternator twice and the ECU once. I'm still getting the same message. Any ideas?

Had the exact same issue. Fuse box wasn’t tightened down all the way and the ground wire was loose. 

[Hyaw0]

Appreciate the advice, unfortunately the fuse box is tight, and ground even tighter. 

[tallyho]

Did you ever figure out what the problem was with your "service charging system vehicle may stall" I have the same problem.  I have been to the dealership 5 times now and they cannot figure it out. I have replaced the battery twice now.

[GMCustomerService]

On 8/13/2022 at 6:46 AM, tallyho said:

Did you ever figure out what the problem was with your "service charging system vehicle may stall" I have the same problem.  I have been to the dealership 5 times now and they cannot figure it out. I have replaced the battery twice now.

This is certainly not what we like to hear, tallyho.  Please know, customer satisfaction is extremely important to us. Our team would be more than happy to take a closer look into the concerns with your truck. To do so, please send an email to [email protected] with ATTN: tallyho/GM Trucks in the subject line.

Please include your contact information, VIN, a brief description of your concern, and the name of your preferred dealership. We look forward to hearing from you. To learn more about GM’s privacy policy, please visit https://www.gm.com/privacy-statement.html.
 
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[tallyho]

Ok....Finally after 21 straight days in the shop it was a wire rubbing on the control arm. They found this after going through the wiring harness and noticing a brown wire had rubbed through the sheath and exposed the wire. I have been driving the truck now for 3 days and the alarm has not returned.

[silveradosid]

thanks for posting the solution