2010 Sierra

[Dylan-254]

Dylan,
Saskatchewan, Canada.
baught a 2010 sierra SLE 4WD Crew Cab couple months ago, and i noticed water leaking in by my sun-shades. took it in, got the recirculation door reset, problem fixed.
Now!... took my truck through an automatic carwash today, and dried up soap was allover my rear doors, but only from the molding below the window, down.

any idea's folks?

 

[Taking264]

If you had just gone through the car wash, I don't see how it would have been dried soap. Have you made sure the rubber seals around the rear doors are complete and intact? Do you have a rear sliding glass window, but any type of crack there would have soap and water all over the seats and rear windows and not just the panels.