If this is regarding a clogged A/C condensation drain hose here is what I did to fix my 1993 Caprice Wagon last summer. I have a 1993 Caprice Classic Wagon and had the same problem last summer when after taking it (the dash under and behind the glove box) apart found that the A/C Evaporator was clogged up which I am sure clogged the A/C drain. They both were clogged with dirt and goo/grime that had collected on it after so many years/periods of sweating (condensation) from the hot and cold process. I believe that when the A/C system is in full recirculate mode, the system picks up dirt and grime from inside the car and sucks it up mixes/attaches it on the outer area of the fins (like a radiator) of the condensor. In lieu of replacing the condensor, I was able to take a paint scraper and BBQ grill prush, old tooth brush, WD40 to disolve the goo and carefully clean the fins and removed the grime from the condensor housing area. This is related to the drain for the A/C that flows through a 90 degree rubber hose that fits over the drain coming out of the right side (passenger side) of the firewall of the car. I removed the short 90 degree hose and went to Home Depot and bought some clear rubber tubing (about 3-4 feet of it = cheap) attached it to the plastic drain end in the engine bay and actually blew back into the condensor box under the dash and then sucked on the tube to get the crud out. I did not injest it but by blowing in the tube it moved the crud away from the passasge way of the drain and allowed it to flow out with the trapped water (old condensation). I then removed the tube and took a long piece of substantial wire and pushed it into the drain followed by a bottle brush. It is a pain but it will eventually clean itself out and you will get the drainage where it belongs (out in the engine bay and not on the carpet inside the on the passenger side) . Hope this helps, I could not get any A/C air flow until I looked on the internet last summer and took the action to clean the condensor and then the drain. This is evidently a problem with this model of Chevy. The other option of course is to replace the condensor completely but it was worth the effort and now my A/C and airflow are now 100% and cold as ice - just drove it back from Phoenx, AZ last weekend. Be patient as you work this if this is the detail that you need to get into. Good Luck, John, Springfield, VA
to engine and rad
Blocked condensate drain hose on bottom of evaporator.
Remove the lower radiator hose.
Drain the radiator. Remove the top radiator hose. Remove the water inlet, and take the thermostat from underneath it. Install the new thermostat. Reinstall the inlet and hose. Fill the system with coolant.
If if won't pump all water out, the d/w hose or sink drain is plugged.
If it's a sink drain , best to remove the entire pipe and P trap. I then take outside and hose them out.
give me a picture where ac hose is located
Generally, the upper heater hose leads to the water pump.
A 2004 Chevy Avalanche does not have a radiator drain. The front of the vehicle needs to be raised, then the bottom radiator hose disconnected to drain into a pan.
Possibly air conditioner drain hose is clogged
"Cleaned it out"? The evaporator box or the drain hose? Sometimes algae will grow in the box and plug the drain hose. Quick way to check is to use an air hose and blow up in the hose where it comes through the firewall. If you had the box out, did you kink the hose putting it back in?
There is a drain on the lower right of the rad. If you can't get to it, pull the lower hose.
Disconnect the lower coolant hose.
i just disconnected the lower hose
The filter screen at the bottom my need cleaning. Also check the drain hose to see if it is kinked or clogged. If not, check the fitting where the hose connects to see if it maybe clogged.
I use a shop vac and reduce the vacuum hose down to fit the drain tube and suck the dirt out.
You have to remove the filler neck and hose from the tank then slip a siphon hose into the tank.
You have the drain the lower radiator hose, 6.0 liter do not have a drain valve.
Just the drain tube "yes" but not the nipple that it goes to.............
is it possible that the vent hose are disconected?
There is a drain plug just below the lower radiator hose. u must be mistaken there is no drain plug try taking lower radiator hose off!
Get an inexpensive syphon hose
Drain the coolant, unclamp the old hose, remove the old hose, install the new hose, clamp the new hose in, fill up the coolant.
There is not drain plug, you need to remove lower rad hose.
There is no DRAIN PETCOCK on the radiator , You have to pull the lower hose to drain . Thanks GM designers someone asleep at the wheel.