2014 Silverado 6.2 180000kms Starts and dies immediately

[Chris Kasian]

Hello, During a cold snap -35c I remote started the truck twice and the wife drove away in it and made it about 10 feet before the truck died. 

 

Now the truck starts occasionally and runs for only 2 seconds at a time. The truck already went through valve springs a couple years ago with limited kms out on since. 

 

I have started doing a compression test, in my limited time and have only done 3 cylinders so far ~140 psi. 

 

I am looking for some ideas to check tomorrow after I finish the compression test, assuming I find compression to be in spec of course. 

 

Thank you for the help! 

[CamGTP]

Running for 2 seconds and dying out usually to me says something with the security system shutting the truck down.

 

If you have another key, try that first. After that I'd maybe be looking into the fuel system, pump could be the issue but it's really hard to guess without a scan tool on these trucks.

[Chris Kasian]

I will try another key thank you! 

 

Is there a port to test fuel pressure on these engines? I assume it doesn't tell the story as I won't be able to test the high pressure pump, but since I don't have any engine codes hopefully it's still good....

[asilverblazer]

When it dies will it restart?

[Chris Kasian]

Yes it restarts, but seems to take more cranking. It also runs poorly for those few seconds it runs

[asilverblazer]

31 minutes ago, Chris Kasian said:

Yes it restarts, but seems to take more cranking. It also runs poorly for those few seconds it runs

Sounds fueling related to me. Scan tool to watch fuel pressure?

 

[Chris Kasian]

1 hour ago, asilverblazer said:

Sounds fueling related to me. Scan tool to watch fuel pressure?

 

I don't think my scan tool will update for the 2014 model, is there a port to test pressure manually, or is this for the high pressure pump? 

[Chris Kasian]

This is during cranking, does it hit the desired fuel pressure while cranking?