I have a 2013 model Passo. Everything works fine, but a creaking or groaning sound comes from the rear of the suspension. It happens when I brake to a halt or release the brake for acceleration. The same noise comes when someone heavy gets in the rear seat. What could be the reason for the noise, as it is very annoying? From visual inspection, I noticed the coil spring insulators were worn out. Some help in this matter would be appreciated.
