i have a '99 trailblazer with most of the options ( sunroof fog lights etc. ) and whenever it rains for a while i here water rushing to one side or the other only when you turn left or right dont hear it starting or stopping . checked drain holes in the tailgate , rear doors and all is dry !!!! where could this water come from ??? i have isolated the noise to the rear just below the tailgate and rear floor section and it is drivin me NUTS !!!! PLEASE HELP !!!!!

 

see here

https://blazerforum.com/forum/2nd-ge...81/#post460243