When ever I'm going at slow speeds and I'm on level ground I get this very subtle popping from the front left side of my '93 olds bravada. I thought it may be my upper ball joint so i replaced it (as I did the lower a little while back) and still have this popping. It drives me f#@!*!# insane when I hear it. Could this be in the steering linkage even though everything seems to be solid. I also did the control arm bushing not to long ago (both sides, both arms). WTF is this. Thanks

 

have you considered that it might be front axle shaft, those joints take a lot of abuse.

 

It very well could be that considering that this is an awd and these axles are constantly under load. Good suggestion...