How do you find water build up in a 93 Buick Skylark that seems like it is leaking through to the drivers side floor board?

Answer 1

This is a problem with all GM N-body cars in these years. The water is coming through the firewall. I had it fixed for $350 at a GM dealer but the problem has come up again. There should be a recall. After I dried out the carpet, I stuffed some towels where the carpet meets the firewall and change them when they get wet from rain or from washing the car. It's a hassle but I don't want to blow more money on something that shouldn't be a problem in the first place. Who designs these things?

For my car's case, it's definitely not the heater core. I even experimented by washing it and noticing water coming in there.

Update: I think the problem originates with the plastic that covers the blower motor. Mine actually started falling apart (literally) so I removed what was left of it and I don't seem to get anymore water entering the car (Not that I recommend taking the cover off).

AnswerUnless you are driving in rain your heater core is probably leaking. After driving the car for a while check behind the gas pedal and see if it has water. The pipes for the heater core enter the engine compartment just to the right of the gas pedal. To change it our yourself buy a book on your vehicle at the local auto parts store. The aftermarket heater cores (to me) are just as good as the metal/plastic original manufacture cores, and cost less. Answerive got the same problem! except it happens on the passenger side if it were the heater core though, you'd think the coolant level would go down right? AnswerI've got the same problem with a leak on the drivers side only, but a different cause. The door gasket has a slit to allow water to pass. It got clogged with sand, once I cleaned it out the problem went away. The passenger side has a different style gasket and doesn't seem to have the problem.