I don't think there is a 'drain tube'. Its just a hole on the heater/condenser box that drips down on your exhaust manifold.
I have put in a tube so that this does not happen. Its just a 3/8" hose if i remember that I put in the drain hole and calked it. I works just fine. The hose sticks down a couple inches and have some stainless wire holding it to a cross member of something.
LT4KM, 160' TS, MAF ends, TB-BP, GMPP 1.6 R/R, SLP CAI, LCA, Adj. tierod, BMR tower brace, 17x9"F/R, 275/40R17 GY F1 tires. WS6 Muffler, LS1 DS. 21mm rear sway bar. Soon to be LT4 heads, intake, & HOT cam
I had a leaf caught in my drain hole that caused this problem. If you get the front of the car on ramps, jack stands, or a lift, look up by the starter. You will see a black plastic box with a hole in the bottom of it. That's the drain hole.
"No, officer, that bottle is my onboard Halon system"
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