hello would like to know if anyone has ever had water to run into the floor of his or her truck from under the dash? someone told me to check the weep holes but I haven't been able to locate them on my truck 1991 c1500. Any help would be greatly appreciated.

 

Could be your heater core. It's on the passenger side under the dash. I had it happen to me in my '89 Silverado. If it smells like antifreeze, it's your heater core.

 

^^^^yup heater core

 

This is a common complaint.First rule out AF leak by smell,taste,or color. If its water do you have any holes on roof (cab lights ect.) is the cowel vent well draining. There are some screws under the cowel panel ( the peice right in front of the wipers) that can leak. Get a friend to run a hose over it as you watch from inside with a light.

 

I had this happen to my 91 4X4. Can I just cap the hose off from the intake manifold and from the radiator?

 

yes, or in a pinch you can just loop one from another