Ghost in the Machine??

[NDanecker]

I left my 10 year alone in the truck one night while I walked in for takeout food, and I shut down the truck. It did the noise while he was waiting in the truck and freaked him out. LMAO!!!!

Yea - mine did this from new also. If I knew where it was (and I could get to it) I'd lube it. HA!

 

[x50v]

My 2014 Mega Cab Laramie does the same, it can be days later, it has no set pattern, I will have to check the moving bellows and see what they are made of and if I can quiet them down.