2013 Tahoe, Help Needed.Engine quits after key release from start position.

[rickeyrw]

2013 Tahoe, Help Needed.Engine quits after key release from start position. Turns over and starts then immediately dies at run position?

 

[petethepug]

Is there any back story to this occurring? Recent work on truck or other changes made?

Tapped on fuel tank to verify fuel is present and gauge is working?

 

[Joseph Garcia]

Welcome to the Forum from NH.

Lots of knowledgeable folks here who freely share their knowledge, experiences, and perspectives. Knowledge is power.

I hope that you will become a participating member in the Forum's discussions.

Pics of the truck, please.

You are already receiving clarifying questions from the knowledgeable folks on this Forum.

My first thought is that your ignition switch may be starting to fail.

 

[Doubeleive]

well if it was working before and you didn't do anything to it other than start it up and have this happen, then my first guess is ignition switch.
does everything shut off when you release the key? as if you turned the key off? or just the engine?
a scanner that can see the ignition switch position may help as rap may still work but key is showing as off, one way to tell would be to open the drivers door with the key in run and see if the radio shuts off or not. just something to check out maybe.

 

[rickeyrw]

Is there any back story to this occurring? Recent work on truck or other changes made?

Tapped on fuel tank to verify fuel is present and gauge is working?

tank is 3/4 full

 

[tooleyondeck]

Does your Driver's Information Center or gauge cluster show any error messages? Specifically, your Security warning? May be a VATS issue.

 

[davidavidd]

My bets are on a bad switch, bad ground or the anti-theft system going crazy but you definitely need a bi-directional scanner to find out.

 

[rickeyrw]

Is there any back story to this occurring? Recent work on truck or other changes made?

Tapped on fuel tank to verify fuel is present and gauge is working?

Tank is 3/4 full

 

[rickeyrw]

My bets are on a bad switch, bad ground or the anti-theft system going crazy but you definitely need a bi-directional scanner to find out.

Thanks will check

 

[rickeyrw]

Thanks will check

Replaced switch, no change. Starts normally for 3 seconds and quits.

 

[rickeyrw]

Checking with scanner from mechanic friend later today. Stay tuned...
Also starts with remote keyfob and quits the same way.

 

[rickeyrw]

Replaced FSCM preprogrammed Doorman. Same thing. Finally found no communication to ecm. Cleaned Blue connector by fuse box. Car runs normally. New problem PO463, intermittent Fuel Gauge response?

 

[donjetman]

I've had an inop fuel gauge with P0463 for a yr

 

[Fless]

Diagnostic procedure near the bottom of this link:

P0463 — 2013 Chevrolet Tahoe 4WD V8-5.3L Service Manual | Operation CHARM

Detailed repair manual for the 2013 Chevrolet Tahoe 4WD V8-5.3L.

charm.li

 

[mikez71]

Nice job getting it running!
Here's a couple diagrams from the site Fless linked that also might help..

Looks like the sender should read 250ohm empty and 40ohm full between terminals A & E?

#5 below should be the X300 connector.