07 Denali 6.2

[Mricker]

I have a 2007 Denali 6.2 and it keeps dieing I changed Mass airflow sensor went away for a few days and came back worse it is not setting any codes

Anyone have any ideas or experience with this

 

[Big Mama]

How about a little more info. When does it die? Right after start, after driving, at stop light, etc. does it fire right back up? If not, what do you do next? What have you. Checked? How old is the fuel pump, fuel filter, battery, alternator. Usually electrical problems will throw a code but you may have a stored code that takes a better reader to see them.

 

[Doubeleive]

yep ^^^go buy one of those $20 fuel pressure testers at harbor freight and check your fuel pressure when it dies

 

[02Lightning]

No fuel filter on these except for the sock in the tank. I would clean the throttle body, with a old tooth brush and some cleaner also.