buzzing sound when shut off

[kalebBstrokin]

my truck always made a buzzing sound for like 15 sec after i shut it off, but i had never seen another 6.0 do it.. so last week i had it in the shop, and they replaced the fuel pump and updated my PCM, whats the deal with that? funny part is i didnt notice it wasnt doing it until today!

[npccpartsman]

If it's still buzzing on shutdown then you don't have the latest flash (or the dealership doesn't). There is a later flash that heats the injectors at start up (similar to the glowplugs but different) to aid with cold starts. The buzzing you hear at shutdown is the spool valves being cycled to "empty" them of oil.

[elibenson]

^^^ What he said.

[kalebBstrokin]

no it does not do it anymore, is that the way i want it, lol ... THANX!

[PGreenSVT]

Originally Posted by kalebBstrokin

no it does not do it anymore, is that the way i want it, lol ... THANX!

In a word, yes.

[CanadianDiesel]

My boss's "old" 07 did this too...always wondered what caused it!

[nylyon]

When was the latest flash released? Last flash my truck had was due to recall 06E17.