My 2009 gmc yukon in the morning at first crank will start and die, but start up again just fine. Fuel pump was already replaced, and it still happens. It only happens in the morning after it has sat for a while..Any ideas what it could be?
2009 GMC yukon denali starts and dies
Molson02536
New member
Could be a lazy oil pressure sending unit, or a bad oil sending unit. The other area's that could be the cause is bad oil pressure regulator.
When starting up the engine, the PCM will allow the engine to run with low oil pressure for a few seconds then shut down if the pressure does not get high enough.
Start with the simple and inspect your gauges to see if your are getting oil pressure or there is no low oil pressure light on the dash.
Keep us posted and good luck.
Molson02536
GMC Customer Service
New member
Harkarang,
I would suggest that you have your dealer look into this for you. I would also like you to keep me posted on the progress with this concern. If you have any questions, comments or concerns please feel free to contact me anytime.
Thank you,
Stacy GMC Customer Service