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Discussion Starter #1
if this has been discussed please point me to the right discussion.

2012 armada truck makes humming noise after shut off.
 

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helpful if you post up a sound clip or video. there is no "standard" or "known noise" after shut off.

have you taken it ot a service shop?
did it just start happening or has it been that way for a while?
had any work done to the car? whats the maintenance history on it?
you the new owner or had it for a long time?

does the car drive weird or do something out of the ordinary?
 

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Discussion Starter #3
Noise recording:


I have owned the truck since 2015. Never heard this until about a month ago.
 

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thanks bro.

do you have the tow package ? if so, you have the self leveling shock system in the back. that sounds like the compressor pump in the rear. next time ti does that hop out the car and go back to the rear driver side and listen.
 
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