I am having the same problem. I just saw something listed for a Chevy truck where water is coming in through the firewall. Apparently there is a bad gasket.
Answer 2If the water is on the passenger side floor the rain deflector weather-stripping is the problem. The weather stripping on the metal near the bottom of the windshield is notorious for falling off and allowing water into the blower motor inlet which will cause all kinds of headaches.Check out the following website for detailed pics and instructions on how to fix this problem. The writeup is about the cabin airfilter but also mentions the rain defelctor stripping that becomes mislocated and causes the above problem and how to fix.
http://www.clubgp.com/newforum/TM.asp?m=2398123&p=2&tmode=1&smode=1
Hope this helps.
"G"
Answer 3
Two GP owners have told me to just use cocking across the bottom of the windshield
Answer4
Had the same problem and it ended up that the cowl at the bottom of the windshield was leaking. Just had a windshield glassman reseal the area and it stopped.
Larry
Either your windshield or driver's side window has a major leak
under the floorboard in front of the driver seat
the heater core is bad
It simply pulls off. There are two square moldings on the foot rest that align to two square posts screwed to the floorboard. Be careful when restoring the footrest, be sure to properly align the posts.
How do yo fix a stuck driver side electric window on a 1998 pontiac firebird.
The ECM is located on the driver's side, under the hood on a 2003 Pontiac Montana. It is on the driver's inner fender.
Check to see if your floorboard is rusted through. If it is patch it.
check around your window on that side sometimes they will separateand you will have to have it fixed
What dose trip a 3 mean on my Pontiac G5
Pontiac PVC Valve is located on the Driver's side rear valve cover.
usually on the driver side door
FRONT SEATING AREA, DRIVER SIDE, UNDER DASH, MOUNTED DRIVER SIDE OF STEERING COLUMN. It is located under a removable panel on the left side of the floorboard on the driver's side (the 'kick panel') It is the vertical plastic panel.