All Power shut off while driving !

[Dr. Louis]

While driving home this morning my truck cut off! All power was lost instantly! Really weird! After about 15 minutes it restarted like normal but the display screen said to “roll down drivers window and back up”. Has this ever happened to anyone? 
puzzled !

[xSHIFTxNASTYx]

55 minutes ago, Dr. Louis said:

While driving home this morning my truck cut off! All power was lost instantly! Really weird! After about 15 minutes it restarted like normal but the display screen said to “roll down drivers window and back up”. Has this ever happened to anyone? 
puzzled !

Sure... if I disconnect the battery.  Check your battery connections and make sure they're on the terminals tight.  Maybe you hit a nice bump that was enough to jar one of the cables loose enough to cut power to the truck.  

[Frankielozano214]

Had that happen when I disconnected my battery for 10 minutes or longer

[garagerog]

1 hour ago, Dr. Louis said:

While driving home this morning my truck cut off! All power was lost instantly! Really weird! After about 15 minutes it restarted like normal but the display screen said to “roll down drivers window and back up”. Has this ever happened to anyone? 
puzzled !

All I can say it's about time to fuel up.

[HeySkippyDog]

It performs some kind of calibration/reset.

Sent from my SM-J810F using Tapatalk

[btj_z71]

In agreement with the other guys, Check alternator and battery connections.  

[Ozer]

I had the shut off issue few times, scary!!

All my wires were tight. I added a second negative battery ground from the Battery NEG to the ground bolt next to the brake booster, the one that has a ground wire going down.

Never had an issue after that. Tighten your cables, if they are tight then do what i did.

 

Parts store 60" or so of new wire and just bolt in, 5 min job and like $20 or less.

[HeySkippyDog]

How old is your battery?

You may need a new one.

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[Dr. Louis]

22 minutes ago, HeySkippyDog said:

How old is your battery?

You may need a new one.

Sent from my SM-J810F using Tapatalk
 

I went had the battery and alternator tested today. They both passed the test. So I'm confused 

[Dr. Louis]

6 hours ago, Ozer said:

I had the shut off issue few times, scary!!

All my wires were tight. I added a second negative battery ground from the Battery NEG to the ground bolt next to the brake booster, the one that has a ground wire going down.

Never had an issue after that. Tighten your cables, if they are tight then do what i did.

 

Parts store 60" or so of new wire and just bolt in, 5 min job and like $20 or less.

Terminals were tight, but I think I'm gonna try you're suggestion and add a ground wire. Thanks

[TXGREEK]

While driving home this morning my truck cut off! All power was lost instantly! Really weird! After about 15 minutes it restarted like normal but the display screen said to “roll down drivers window and back up”. Has this ever happened to anyone? 

puzzled !

 

Same thing happened to me, replaced both battery cables, never had a problem after. Apparently, the cables weren’t crimped tight enough onto the battery post clamps. Try replacing the negative wire first

 

 

Sent from Above

 

 

[TXGREEK]

First time it happened was in my Escalade, then my 2018 GMC was affected as well, negative battery cable replaced and all is well




Sent from Above

[g2full]

9 hours ago, Dr. Louis said:

I went had the battery and alternator tested today. They both passed the test. So I'm confused 

 

Watch that. From working in the A/M world for 6 years and testing batteries and alternators there are many things that can "fool" that test. Even working in the O.E. world now, same thing applies.

 

Depending on the accuracy of the data entered into the machine when initiating the test can give you different results. Where I'm at now our tester has several options (Customer owned, Dealer inventory, and Warranty) all having different standards on what will and won't pass. 

 

Also used to test them frequently in the A/M and have them "pass" every time knowing that the battery was giving the customer nothing but issues and really was bad. 

 

Intermittent failure in the alternator? Won't always be failing when tested. 

[Grinnen]

If you think that's bad? Check this out.

 

https://youtu.be/CrXHDTCe0yw

 

[Chicken Heart]

To TXGREEK, that's exactly what my dealer wrote up.  Replaced the negative ground cables and they told me it was all hunky dory!  hahaha   left the lot and the truck went off just like it had causing me to take it to them anyway.  So I'm still searching.  I'm waiting for some warmer weather here in amarillo so I can get some things done, like the G218 grounding points, especially  now that I found out how to take apart the dash to access those things.  I just purchased a new battery distribution block and will replace that thing also.  Already had a new battery harness installed so that's good.  hell, I even replace a perfectly good original DELCO battery with a Optima! 

What ever happened to simplicity in building vehicles?