Weep hole - Muffler

You guys are probably saying.....how stupid can you get?

I have a 2004 Sierra 2500 6.0 liter with a stock muffler. Yesterday I noticed drops of water coming out of the bottom end of the muffler below where the tailpipe joins...at the crimped edge.

Is this a manufacturer's weep hole to allow condensate in the muffler to drain and not corrode and rust out my muffler? Or do I have a hole in my muffler?

Sam:screwy:

That's a factory drain hole, pretty common on GM mufflers.

Thanks for the input...thought that was what it was. Have a 4runner and it does not have a drain hole in the muffler.

Sam:grinno:

Hi guys: i have all ways drilled a 1/8 inch hole in the front and back of the muffler in the lowest point just above the crimp ( as the stock muffler has) to allow condensate in the muffler to drain as short drives in -30 tend to freeze or rust out to quick for my liking. 463

Hi guys: i have all ways drilled a 1/8 inch hole in the front and back of the muffler in the lowest point just above the crimp ( as the stock muffler has) to allow condensate in the muffler to drain as short drives in -30 tend to freeze or rust out to quick for my liking. 463

Thats the problem,we save money buying regular gas with ethanol in it ,only to spend the saved cash on new mufflers:banghead:

if you watch cars/trucks pulling away from a stop the tailpipe is 9 times out of ten is dripping or slobbering in cool to cold weather.