2021 suburban RST - acting up/lights flickering

[520Zilla]

Hi all,
 

I just bought a 2021 suburban RST with 88,000 miles on it and everything has been good but I’ve been noticing within the last month or so that there are small electrical things going on and I know what the AGM batteries and all the electric electrical in these big trucks you need to have a constant flow with good voltage

 

That being said, I bought a new battery thinking that that might have something to do with it but today I went to get in and start it and it said no key found when I had the key right in my pocket

 

It also proceeded to flash the lights inside and outside for over 30 minutes as I went to disconnect the battery as soon as I touch the negative terminal, I heard the relay reset and everything come back up. I got in the truck and started it no problem.

 

Anyone else have this happen to them? I’m starting to think it’s the KARR system that the dealer installed short circuit stuff.

[newdude]

19 hours ago, 520Zilla said:

Hi all,
 

I just bought a 2021 suburban RST with 88,000 miles on it and everything has been good but I’ve been noticing within the last month or so that there are small electrical things going on and I know what the AGM batteries and all the electric electrical in these big trucks you need to have a constant flow with good voltage

 

That being said, I bought a new battery thinking that that might have something to do with it but today I went to get in and start it and it said no key found when I had the key right in my pocket

 

It also proceeded to flash the lights inside and outside for over 30 minutes as I went to disconnect the battery as soon as I touch the negative terminal, I heard the relay reset and everything come back up. I got in the truck and started it no problem.

 

Anyone else have this happen to them? I’m starting to think it’s the KARR system that the dealer installed short circuit stuff.

 

 

Have the aftermarket system removed an re-test.  Its pretty much the only way to know if there is still an issue that is the truck and not from that.  

Edited July 13 by newdude