Loud boom, no damage, cannot figure out where it came from?

I have seen batteries blow and sound similar. Turbos when one side breaks off, or even a cac hose clamp can make a similar noise. These are some I have personally heard.
A weird one happened to me one time but not in a truck. I was running a 631 cat scraper loaded and wide open, the last load before lunch. I blew a tire, dirt flew and the air smelled like the air from inside of a tire, were talking big sonic boom. I stoped and checked no flat, I got back on and raised the pan and still no no tire looked low, The blade man had heard it also and came to see what blew. I still had air pressure so this is just a head scratcher. I went and dumped and went to lunch. The mechanics always checked our oil and looked over things while we were eating, but I told the boss mechanic that I had bloow a tire, he ask which one, and I told him I was pretty sure the one by the drivers seat, but wasn't sure. He walked off shaking his head, and came back telling me I must have lost my mind. Right before lunch was over he came back and told me I now had a flat, I told him it was more than a flat and I wanted to look at the old tire when they got it off.
It had blown about a 6 in high by foot long chunk out of the side wall, but it had blown inward and resealed the hole. Some times strange things happen. lol

 

Another thing that can make a get your attention boom, is a butane lighter that the defroster has eaten. lol

 

Purge valve bad perhaps?

 

Did you run over an armadillo? They jump.

 

There have been times in the mountains in bad weather (Rain) where I have had booms.

Check the truck carefully nothing. Radio is quiet, everyone else is in order and so on.

You wont believe me but sometimes that mountain talks to you when the boulders crack and shift You do not want to be around when that mountain decides to have a rockslide.

Dispatch has sent me for drug tests before when I reported these things so I learned to let it go and shut up about it.

 

On your air compressor, or by the bumper.
It's the part that let's the air out when you reach 120psi.
Or your governor could be dirty?

 

What did you have for lunch. Next time you stop check your shorts.

 

It could be a cross member trying to work loose. They will make a pronounced pop and you will feel it in the floorboard. Not saying that's it but a possibly. Usually nothing to really worry about unless it gets frequent.

I'm not sure what kind of front spring pins the truck has but if they are a pin and bushing style that greases they can pop also. Though usually in a turn.