Instrument Cluster Gauges Cut Out

[benmcelhaney]

Hey everyone,  I've done some searching for a few days, but nothing seems to be the same issue I'm having.  Of course, I could have searched for the wrong thing.  Anyway....

I have a 2015 Tahoe LT.  120K miles, give or take.   I've got an issue with all of the instrumentation in the cluster.  All of the gauges work as normal when you start up the Hoe.  Then they will just all start falling to zero at the same time, then come right back up to normal.  It kind of flickers like that quite a bit when you first start driving.  Then it gets better but keeps doing it here and there while you drive.  No issue in power loss, no radio failure, turn signals, headlights, etc....   Once, when I started it up and shifted into drive, the shift indicator was not showing anything so I couldn't see which gear I was in.  That's just more of a 'feel for it' type of thing though so I wasn't worried. 

 

It does give warning signals like service brakes, security, tire monitor, etc.... but nothing stays light up and there are no stored codes.  

 

I cleaned the battery terminals and tightened them down.   I will go looking for bad grounds some evening this week.  Any that i should check first?  I'm thinking around the drivers seat, as its winter and I've been in and out while hunting which could have got some water/mud onto a ground in the drivers seat area.  

 

 I cant imagine its a fuse, as that should be either good or bad, not spotty.  maybe im wrong though?  

 

I also got a lot of hits while searching that it could be a HMU or Ignition switch.  Can either of those cause this issue?  I did have one time where my backup camera got stuck on after backing up.  i drove for about 5 miles to my house, turned off the hoe and it was fine a few minutes later when I got back in.  

 

hope the video works... 

 

Thanks, 

 

Ben

[Gregory Krisa]

Most likely an issue with the cluster either bad ground or maybe bad solder points everything else you have thought of are good places as well

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[benmcelhaney]

Thanks.  I'll see if I can find a bad ground and/or solder points.  I am going to check fuses first just to be sure, since its easy. 

[rav3]

Sounds like a possible bad "dash" ground. Have you seen this video about it? It's an easy DIY fix. There was an issue at the factory where when the ground was fastened, a part of the sound insulation got under the clamping nut. Watch the video & check out your ground on both sides of the dash.

 

2014 Chevy Silverado electrical issues and Stabilitrack issue FIXED!!!!

[tlaw91]

Dash harness ground is a good check!

If that is ok then check my post on how to check your battery cables as well it’s easy and free

[CCONLEY]

I have a 2015 GMC Sierra 1500 that has this issue. I just got done taking everything apart in the dash and took all the connections off of both grounds left and right twice. Cleaned everything up and trimmed the insulation twice. Reconnected everything and for the first 30 minutes everything worked like it should then bang everything started glitching and bouncing again. I don't know where to look or what to do at this point.

[blov]

Has anyone found out what real problem is with this ?

 

 

[blov]

On 2/4/2025 at 7:50 PM, CCONLEY said:

I have a 2015 GMC Sierra 1500 that has this issue. I just got done taking everything apart in the dash and took all the connections off of both grounds left and right twice. Cleaned everything up and trimmed the insulation twice. Reconnected everything and for the first 30 minutes everything worked like it should then bang everything started glitching and bouncing again. I don't know where to look or what to do at this point.

Did you find out what the problem was?

[Jtheis]

Any updates? Have the same thing on a 2015 Silverado LT. 

[netroamer]

I am having the same issue, but only occurs after it has been raining. Any updates on this?

[Jtheis]

Anyone get anything on this?