1999 Chevy Silverado water leak on passenger side

[quote:47dbb1e0bb="trasconada"]Interior problem
1999 Chevy Silverado V8 Four Wheel Drive Automatic 130k miles

my silverado has a water leak on the passenger side. the entire mat and carpet are continually soaked. I've tested the heater core and A/C and neither leaked. what else could I check?[/quote:47dbb1e0bb]

Smell it, if it smells sweet its antifreeze. If you dont smell anything, taste it, if it taste funny its antifreeze.
Any of the two above is a leak in or around the heater core.
Anything else...could be rainwater from a bad door seal or a leaking windsheild.
Or you could be low on freon making the coils freeze up then thaw out when you park your truck.