2015 Tahoe LTZ instrument cluster ground location?

[ReaperHWK]

I’m having an issue with my 2015 Tahoe LTZ. The cluster is going crazy giving me tons of error messages and also the gauges going in and out. Seems to me like 90% it’s a ground issue, no way all these things failed at once.

Anyone know where the ground location is for the instrument cluster? I did search online didn’t find it.

 

[Mason3601]

Having the same issue here, any insight would be wonderful. 2016 LT. Gauges randomly all go to zero and then pop back up leaving “service” messages on the dash. I checked and cleaned what grounds i could find but no luck so far

 

[ReaperHWK]

So this issue was intermittent then now it totally Grenaded my car. Can’t even start it anymore electrical problems like crazy.

I checked 3 grounds and cleaned multiple connectors. There is a ground in the top left of the dash(right by the driver a-pillar) and I also checked the firewall, engine block, and chassis grounds. All were good. Also battery and alternator was tested good.


I’m leaning toward a bad BCM now. The car is totally bricked.

 

[BlaineBug]

G218

 

[bdwood]

So this issue was intermittent then now it totally Grenaded my car. Can’t even start it anymore electrical problems like crazy.

I checked 3 grounds and cleaned multiple connectors. There is a ground in the top left of the dash(right by the driver a-pillar) and I also checked the firewall, engine block, and chassis grounds. All were good. Also battery and alternator was tested good.


I’m leaning toward a bad BCM now. The car is totally bricked.

Did you ever figure out what the issue was? I'm having a similar issue with a 2015 z71, cluster gauges go nuts for the first two minutes along with codes going off but then everything goes back to normal. New battery, new battery cables, tried a new BCM, New cluster, nothing works. Dealer can't seem to figure it out either. Any forum wisdom on the matter. ECM?

 

[BlaineBug]

Did you ever figure out what the issue was? I'm having a similar issue with a 2015 z71, cluster gauges go nuts for the first two minutes along with codes going off but then everything goes back to normal. New battery, new battery cables, tried a new BCM, New cluster, nothing works. Dealer can't seem to figure it out either. Any forum wisdom on the matter. ECM?

Do you have any stored or history codes?

 

[BlaineBug]

So this issue was intermittent then now it totally Grenaded my car. Can’t even start it anymore electrical problems like crazy.

I checked 3 grounds and cleaned multiple connectors. There is a ground in the top left of the dash(right by the driver a-pillar) and I also checked the firewall, engine block, and chassis grounds. All were good. Also battery and alternator was tested good.


I’m leaning toward a bad BCM now. The car is totally bricked.

Are you also storing any history codes?