Water leak at passenger side kick panel A/C vent

[76k5blazerr]

74 K20, noticed water leaking this morning, actually more like flowing, into the cab of my truck from the bottom of the little air door in the passenger side kick panel. This is a factory AC truck. Not sure exactly what that little door does as I’ve never seen it open up, but regardless it’s letting water in and this truck is extremely solid and even has nice carpet so it needs to stop. Is it the seal around the door that is failing or something else? Something clogging up the normal passageway for water around there and diverting it through that door?

 

[6872xtc]

I would check if the cowl vent drain is plugged up. But I am not sure if you can see the bottom of it from underneath the truck. You could probably pull the door out of the kick panel and reach in. It probably has leaves or stuff blocking the drain hole.
You should be able to see the drain if the fender was off or pulled loose and out from the bottom of the cab.

 

[76k5blazerr]

Can you get to it through the top of the cowl? Or what is the best way to go about cleaning it out?

 

[sweetk30]

pull the wiper arm's off . pull the metal cowl off . pull the washer hose's off the tiny tubes . pull the plastic cowl cover . clean out years of junk and crap in the cowl area . dry out good . get new seam sealer and rubber glove to use when you put it on your finger and redo the seam sealer that is most likely dried out and cracked .

but as said the drain is prob plugged up . the pass side is the floor vent port for when you have the HVAC control on vent only . if it was a NON a/c cab it would have a pull/push lever and a second unit on the driver side also .

 

[76k5blazerr]

pull the wiper arm's off . pull the metal cowl off . pull the washer hose's off the tiny tubes . pull the plastic cowl cover . clean out years of junk and crap in the cowl area . dry out good . get new seam sealer and rubber glove to use when you put it on your finger and redo the seam sealer that is most likely dried out and cracked .

but as said the drain is prob plugged up . the pass side is the floor vent port for when you have the HVAC control on vent only . if it was a NON a/c cab it would have a pull/push lever and a second unit on the driver side also .

I will pull her in the garage this weekend and do that, good project for a rainy day. Hopefully I can do it without removing the hood, it’s a 74 so I don lt have a removable cowl piece.

 

[sweetk30]

oh 74 then i got no idea on exact details . i play with 81-up style .

but same rules go as i posted up .

 

[82OilBurnr]

pull the wiper arm's off . pull the metal cowl off . pull the washer hose's off the tiny tubes . pull the plastic cowl cover . clean out years of junk and crap in the cowl area . dry out good . get new seam sealer and rubber glove to use when you put it on your finger and redo the seam sealer that is most likely dried out and cracked .

but as said the drain is prob plugged up . the pass side is the floor vent port for when you have the HVAC control on vent only . if it was a NON a/c cab it would have a pull/push lever and a second unit on the driver side also .

Can I remove the cowl without removing the hood? It doesn’t look like I have enough clearance.

 

[sweetk30]

yep it can be done . hood goes up and down a few times until ready to pop out . tilt front up and lift up and out from windshield .