Blacked out dashboard

[15 denali]

That’s with the truck running . 

[15 denali]

Works and everything else the only things that don’t as the dash and the navigation screen . And I also can’t hear my turn singles but can see them working on the mirrors 

[15 denali]

That’s with the truck running I can see the navigation screen has power but no picture and no thing on the dash at all. Also the other day I started it and the navigation screen icons popped up for a bit but couldn’t press anything . Everything else works fine in the truck . 

[JimCost2014]

22 hours ago, 15 denali said:

That’s with the truck running I can see the navigation screen has power but no picture and no thing on the dash at all. Also the other day I started it and the navigation screen icons popped up for a bit but couldn’t press anything . Everything else works fine in the truck . 

Something is not right here.

 

Your speedometer is in MPH, but your HVAC is in Celsius. 

 

Did you buy the truck new?

[15 denali]

Yes that’s what happens sometimes it freaks out and it’s normal then it does this then it goes off and then goes back to reading temp and such normal. 

[15 denali]

It’s used one owner truck got it from an older man who never drove it hardly .

[15 denali]

I spoke with my friend today who has worked for GM for 25+ years he sent me to bulletins that so this problem happening . It’s either needs to be reprogrammed or it’s something to do with the battery cables . 

[JimCost2014]

24 minutes ago, 15 denali said:

I spoke with my friend today who has worked for GM for 25+ years he sent me to bulletins that so this problem happening . It’s either needs to be reprogrammed or it’s something to do with the battery cables . 

Think you still have the original battery in the truck?

They have a horrible life span, and the trucks will do all kinds of weird stuff as they fail.

 

Check the site here for bad battery cables and poor ground connections, was a common problem in the early years of the run.

[15 denali]

I’m not sure if it is but it’s got an interstate battery in it so I’m guess it’s been replaced. But I don’t have a voltage meter to check it that was one of the bulletin he sent me was the battery cables and the grounds they are all tight if no sign of defects . I just hadn’t check voltage. And the other is that it needs to be reprogrammed. I’ve had no fuses blown or anything . But with the things it does it could be one or the other so I’m taking it to a shop Thursday to have diagnostic done and reprogrammed. It’s just weird the man I got it from I speak with him on a normal bases and had never had any issues with the truck . And he had it sense new . 

[15 denali]

Update tires of the truck acting crazy . So I dropped it off at the dealership to have my good friend look at it and see what’s wrong to fix it . 

[shortnugly]

Any updates on your problem?