2014 gmc stops while drivng no electrical powercomplete shutdown

You don't say a pinout of WHAT?

https://www.google.com/search?q=pinout+diagram+E38

Denali Radio?

GMC Yukon Denali 2014 - SYSTEM WIRING DIAGRAMS

https://portal-diagnostov.com > 2020/04/13 > radio-gm...

Apr 13, 2020 - RADIO - GMC Yukon Denali 2014 - SYSTEM WIRING DIAGRAMS Dual DVD Headrest Wiring Diagram. Get Access all wiring diagrams car. Radio Wiring ...

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  All Wiring Diagrams for GMC Yukon Denali 2014

  https://portal-diagnostov.com > 2020/07/22 > all-wiring...
  
  Jul 22, 2020 - All Wiring Diagrams for GMC Yukon Denali 2014 · AIR CONDITIONING · ANTI-LOCK BRAKES · ANTI-THEFT · BODY CONTROL MODULES · COMPUTER DATA LINES.

GMC Yukon XL pinouts - PinoutGuide.com

https://pinoutguide.com > dev > GMC > Yukon+XL
Here are pinouts for GMC Yukon XL devices. ... There are 6 pinouts found for GMC Yukon XL . The pinout (pin-out) ... The pin outs diagrams are listed below.

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look for ABS trouble code first

Stop paying for it

Call OnStar & do not let them
automatically bill you

You may want to consider the basic radio with
Sirius for $12.03 a month

Electrical problem. Something gets hot and stops working. Could be fuel pump or something in the ignition system, so losing spark. After it stalls, spray starting fluid in the intake and try to start. If it fires up and runs a few seconds, you know it's a gas problem. If starting fluid doesn't do anything, check for spark, it's probably an ignition failure-possibly the coil or the ignition control module. The module can be tested at a parts store.

You'll have to figure out if it is a fuel or ignition problem.
Is the check engine light on ? Have you checked for trouble codes ?
It could be a relay, the ignition module, coil, fuel pump, or a list of other things.

firing order is probably off quick fix just Google it

there is the main power wire coming from the starter to the fuse panel. check the connection on the battery and the connection on the fuse panel. also check the chassis ground.

all the electrical appliances in ur car r collected to the fuse box and the battery head so ones a fuse is broke it affects the next fuse closest to it. get a rewirer to check it before further demand is done

The fuel pressure regulator does not seem to be working. It should hold fuel pressure in the injector lines. Your fuel pressure may also be to low.
Lee

please vote if this was helpful or not.

block gas filter when you drive gas pressure go truh the filter pack it up less pressure car stall some gas go back ih tank unpack the filter if it would be electrical it wouldnt start (ingniter.or coil) check it out hope it fixya our post thanks pierre