2018 Silverado Battery Change now having issues

[9999usmc]

My 2018 Chevy Silverado was fine until after AAA replaced my battery as it had a bad cell and wouldn’t keep a charge.  I watched them replace it and they did every correct (negative side first, etc).

Now my windows won't roll up or down,..ac stopped working, my radio screen is dark, only the left side turn signal works, no power door lock, no steering wheel controls…..

 

I checked all the fuses and nothing looks blown, I disconnected both terminals for a few hours and reconnected thinking something would reset, but no joy….

 

Any suggestions?

 

Edited September 18, 2021 by 9999usmc

[diyer2]

Check grounds to frame? Battery cables?

[9999usmc]

Yeah, checked.  Called dealer yesterday and asked if they have ever heard of something like this and got a quick, you can bring it in and we will run a diagnostic check….

 

saw a post on here who had same problem but he hasn’t replied if he got his issue fixed 

[diyer2]

Take it to an auto store and have them check for stored codes. Free service.

[9999usmc]

Good idea will try that, thank you

[CrawlSlow]

Double check the work that was done. Make sure the harness connecting to the top block (fuse?) Is connected.  Check all the posts on top to make sure it's not loose or connect wrong. Wires and posts are labeled with matching number. 

[JimCost2014]

On 9/18/2021 at 7:04 AM, 9999usmc said:

My 2018 Chevy Silverado was fine until after AAA replaced my battery as it had a bad cell and wouldn’t keep a charge.  I watched them replace it and they did every correct (negative side first, etc).

Now my windows won't roll up or down,..ac stopped working, my radio screen is dark, only the left side turn signal works, no power door lock, no steering wheel controls…..

 

I checked all the fuses and nothing looks blown, I disconnected both terminals for a few hours and reconnected thinking something would reset, but no joy….

 

Any suggestions?

 

Welcome to the site.

 

Off topic, thank you very much for your service to our country!!!

 

Check the new battery, they will die sitting on shelf, it is not uncommon to replace a bad battery with a "new" bad one.

[9999usmc]

Will do, thank you.

[9999usmc]

6 hours ago, CrawlSlow said:

Double check the work that was done. Make sure the harness connecting to the top block (fuse?) Is connected.  Check all the posts on top to make sure it's not loose or connect wrong. Wires and posts are labeled with matching number. 

Everything seemed to be wired correctly. I read some where that if power is lost for a certain period of time, it effects the computer and it must be reprogrammed…..

[It's Tim]

On 9/18/2021 at 10:04 AM, 9999usmc said:

replaced my battery as it had a bad cell and wouldn’t keep a charge.

 

How many times has this occured?

Was the vehicle "jump started"?

[Z45]

Don't know if this could be a reason.  I was at a friends shop a while back. They are all former GM techs and owners is former parts mngr of defunct Chevy/Olds shop. Their repair shop is an AC Delco authorized parts and service center. They actually are the go-to source for GM dealers needing batteries in this area.  Anyhow, it was a newer GM car, 2017ish (not sure of year) and they had a battery tester type device powering the car while they replaced the battery.  I asked why they used that and he said, paraphrasing,  'these vehicles can have problems if all power is lost so we keep it powered'.  The battery tester machine allows them to do that without any problems.  Btw, the battery was in the trunk of this car.

Edited September 20, 2021 by elcamino

[9999usmc]

That’s what I was thinking, the AAA guy didn’t use anything like that for sure….  I took it to the dealer this morning, hope it’s something simple and computer can be reset/reprogrammed or whatever it’s called. 
 

 

[rlcole321]

Keep the post going for info reasons, thanks.

[SuperOldSchool]

On 9/18/2021 at 9:53 AM, 9999usmc said:

Good idea will try that, thank you

AAA replaced mine as well.  He did a relearn for the windows.  

[CrawlSlow]

On 9/20/2021 at 5:18 AM, elcamino said:

Don't know if this could be a reason.  I was at a friends shop a while back. They are all former GM techs and owners is former parts mngr of defunct Chevy/Olds shop. Their repair shop is an AC Delco authorized parts and service center. They actually are the go-to source for GM dealers needing batteries in this area.  Anyhow, it was a newer GM car, 2017ish (not sure of year) and they had a battery tester type device powering the car while they replaced the battery.  I asked why they used that and he said, paraphrasing,  'these vehicles can have problems if all power is lost so we keep it powered'.  The battery tester machine allows them to do that without any problems.  Btw, the battery was in the trunk of this car.

 

I'm interested to know more about that vehicle. On that vehicle (it would be extremely beneficial to all), if the owner has to replace any electronic parts, does the new parts comes with any power bank to keep it powered? If the new electronic parts does not have power to it while "new" in the box, would it not work? Would it just be more problematic? If so is it even worth replacing electronic parts? I'm extremely curious about that vehicle.