2015 Jeep Grand Cherokee creaky sound

32,000 miles. Creaking sound (bed spring),coming from driver side area, where dash meets A Post when braking. I bounced up and down on vehicle while it is in the parked position, and no sound. Only when braking and accelerating from a stopped position.

Usually this is caused by worned stabilizer bar bushings.They sound like a creaky bedspring when worned out.Usually a coat of lithium grease between the U-shape bracket and the polymer bushing will temporarely take care of the noise until you get it repaired.Also, make sure the strut spring is not broken because it can also sound like a creaky bedspring.