Why doe my 1991 chevy S10 water leaks in cab?
You’ll need to figure out where the water is coming from…the gasket around the windshield can fail, if you have a sunroof I’d start there, maybe the side windows rubber gasket or even the gasket around the doors. It all begins with where does it come from. BTW: If its green and under the glove box, I’d check the heater core.