Water Found in Rear Interior of Cab, Water Leak at Rear Sliding Window. I noticed water spots on the left and right sides of the headliner. I took it to a dealer (Malloy Chevy winchester Va), and the said it was a TSB put out on this problem and they would file a claim. The truck has 48000 miles and the bumper to bumper company denied the claim. Have the TSB didn’t matter to them. Can you assist in any way with this?