Dash glitching

Brandon Stone · February 8, 2020

For a few months now atleast and intermittently, my dash will glitch like its losing power....instances are getting on the gas the whole dash will glitch, pausing or stopping the radio. Got on my interstate one time and dash glitched, even turned on my windshield wipers. Another case was having my cruise control set and used my turn signal and it canceled out my cruise. I only drive my 14 silverado on my days off and somedays it does it and other days nothing. I know the possibilities of what it could be are endless but looking for insight. I know once I get it fixed they'll be a recall and I'll be out a probable grand for something electric or computer issue

JimCost2014 · February 8, 2020

2 hours ago, Brandon Stone said:

For a few months now atleast and intermittently, my dash will glitch like its losing power....instances are getting on the gas the whole dash will glitch, pausing or stopping the radio. Got on my interstate one time and dash glitched, even turned on my windshield wipers. Another case was having my cruise control set and used my turn signal and it canceled out my cruise. I only drive my 14 silverado on my days off and somedays it does it and other days nothing. I know the possibilities of what it could be are endless but looking for insight. I know once I get it fixed they'll be a recall and I'll be out a probable grand for something electric or computer issue

Welcome to the site.

If you feel your battery and all ground points are in good shape, I would start with the HMI module which is located in the dash behind the glove box.

Brandon Stone · February 15, 2020

My battery never really drops below 14 when it's happening and connections are tight, mechanic that I've talked to said hes seen some pretty weird stuff happen when it's just a battery issue so hmi is a possibility

flyingfool · February 18, 2020

i get this once every other couple months, but it goes away.

Brandon Stone · February 19, 2020

Mines bout one day every other weekend but again I only drive it on my weekends...never seems to do it at night, not that should have anything to do with it

JimCost2014 · February 19, 2020

On 2/15/2020 at 9:40 AM, Brandon Stone said:

My battery never really drops below 14 when it's happening and connections are tight, mechanic that I've talked to said hes seen some pretty weird stuff happen when it's just a battery issue so hmi is a possibility

If you are still on your original battery (hard to believe on a 14), I would look into replacing it, they do cause all sorts of problems as they get bad.

Brandon Stone · February 20, 2020

I replaced it last year sometime but that doeant mean I dont have a bad cell somewhere anyways...it did start eventually happening after this battery but it could still be hmi...just hate to start replacing anything that dont need to be

JimCost2014 · February 20, 2020

I know what you mean about buying parts for no reason.

Might just have to bite the bullet and take it in to see what they find, then maybe do the fix yourself?

kwOH · February 21, 2020

Check your battery cables

Brandon Stone · February 21, 2020

There tight and no corrosion, havent examined the actual cable but kinda limited to how much being by the firewall

flyingfool · February 23, 2020

try running in tow hauls for 5-10 min. as this will recharge the battery if the voltage is sagging in the low 12 volt range, it usually bumps me up to 14+ volts