When turning the steering wheel sharply in either direction while backing up or moving forward I am hearing a popping noise coming from middle underneath truck. Thinking it may be from frame flex I have looked at the cross member at the back of the transmission for rust around the bolts and also have checked for bolts being loose. No rust and bolts are tight
anyone experienced this noise before?

 

For a start,,,,,,,,,,,,,,Check for a wheel that might have loose wheel nuts.

Some times a worn CV joint up front will make a popping noise .

 

Thank you sir I will do that

 

Clunking noises when cornering can sometimes be caused by worn suspension bushings or steering knuckles.

 

I have replaced 3 tie rods and had a front end alignment
seems that was the problem with the popping noise
CV joints and other related front end items were ok
thanks to the folks that replied to thread