if it is just clogged, use a compressed air (can or tank/pump with relatively high PSI) and aim down hose. with many people however, it is apparently a hole in the hose, in which case you should take out the carpet and if necessary miscellaneous pieces of the dash and plastic pillar running down the side of the windshield. Then, remove the tubes, either melt other plastic onto the hole to fix it or replace with generic flexible plastic tubing.
where is the airconditor drain hose on a 1999 Pontiac Bonneville
A bottle brush is perfect for cleaning sunroof drain holes on the Ford Escape. The smaller tip on a two-tip bottle brush can be inserted and then pulled out to clean sunroof drain holes.
The radiator petcock drain on a 1999 Pontiac Bonneville is on the bottom of the radiator. Look for a small black plug that looks like the plug found on a thermos or cooler.
Look at the bottom or rear of the radiator
LOOK TOWARD THE REAR OF THE OIL PAN.
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It is on the bottom of the engine block, just a normal hex bolt.
To repair a leaky sunroof, you need to clean the drainage tubes on your sunroof. You can do this by sticking a thin wire or coat hanger in the drain. Then pour some clean water through the drainage tube.
drivers side bottom right of radiator remove shield and look for plug
under car folow ac lines into small tube protruding out near them
just get an air blower and stick it in the hole and blow all the crap out.
take off serpentine belt unbolt powersteering pump and hoses and drain it. That's it.