Every time it rains and you are driving water gets under the back seat. I have replaced the rubber seal around the doorand also the vent in the rear bumper just like chevy requested I do. And quess what it still leaks! I think it is coming in from the underneath maybe a brokenweld or caulk seam does anybody have any ideas? it is a 2003
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Most water leaks come from around the windshield area. Has the windshield been replaces recently? If so it may not be sealed properly. Another area where water may penetrate is through the cowling area under the wiper blades/arm where fresh air enters the car. There are water drains under this cowling allowing water to drain and if they are plugged with leaves/debris, water will enter the vehicle. Is the vehicle rusted around the windshield area? If so, suspect this to be the source of water intrusion. Most glass/windshield repair companies will diagnose water intrusion problems
has the ac blower motor been under dash been replaced ? my brother replaced mine but didnt rain for a while so when there was standing water in the floor board didn't even think about it but after a small wreck and in the process of replacing right fender and hood had to take off cowl vent panel so decided to look and see if could find leak and sure enough there is a rubber seal around the hole the blower motor fits in and it was not seated correctly reached down seated no more leak hope this help worth checking any way
inspect the rubbers around the rear lift gate closely by running you finger down the rubber seal, use clear silicone if need to if the seal any part of the seal if is not seated properly or broken, this will be temporary fix. correct fix will need the new rubber seal. have someone sit in the back in the rear near the liftgate, take a water hose and hose down the rear and see where the leak is comming from. hope that help some
It could be coming in through the rear door as the rubber might not be sealing properly the easiest way to find the leak is to remove your seats and carpet sit inside get someone to squirt the car round the doors and windscreen air vents.
That can be caused by the door or window seals. Around all your doors there is a rubber seal, this seal can degrade and allow water into the interior. There are also seals around the windows and front and rear windshields. If I were you I would visually inspect all the rubber seals on all your doors and windows, if any part of the seals is worn it should be replaced. You can buy universal weatherstripping kits off the shelf at any auto parts store to replace any of yours that are bad and it's pretty easy to install. You can also pick up a tube of silicone sealent to seal any small gaps or cracks in the existing seals.