Strange noise question

[empeguser]

Sorry if this has been asked before, but I did search and didn't find anything. Well anyway, shortly after I start my car, sometimes right when I move it and sometimes before I move it, I hear a noise that sounds like the right front tire rubbing it almost sounds like the air pump but not quite as loud and it always sounds like it comes from the right front. I have no warning lights on and it drives fine but I was just wondering what it was, it always does it one time after I start but not again until I shut it off then start again. Could this be some kind of abs test or something?

[larryo340]

Yep, sounds like the ABS self test. It'll only self test once per ignition cycle.

[ImpalaSlayer]

i believe that sound is the compessor for the rear shocks. mm have self leveling rear shocks.

[ImpalaSlayer]

if you want to mess around, ley it go off then have someone get in the back. it may take a min but you should hear it come on again