So confused!

[scunningham]

Anyone's 07 denali stall after 15 minutes of driving, stablitrak light on, traction control light on and tachometer not move plus a misfire? Is this a computer issue. I can't figure it out?

 

[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.

Can you provide us with some additional information? When it stalls, does it die suddenly of sputter slowly to a stall? After stalling, does it start right back up again? Were the warning lights coming on before this stalling started? Were any repairs or maintenance performed on the truck shortly before the stalling started?

Do you have access to a quality bi-directional scanner to perform troubleshooting procedures?

 

[jdwood1111]

Does it turn off and then start back up again totally fine or is it like that permanently now?

I am not a great diagnostics guys but an ok find a video and "fix" guy. However, based on what I have read around here, it sounds like it could be a ground issue that once hot, causes some issues. Maybe chase down your ground wires and connections and double check them. Fuses too. Although a misfire could be a loose sparkplug wire or bad wire, coil packs, etc. Maybe stop by an Auto Zone or Advanced to see what cylinder it is and check the wire/packs.