mackaliceter Posted August 26, 2004 Report Share Posted August 26, 2004 I have a '00 DHS which has a terrible dirty sock smell when in vent mode. When compressor is on there is no smell. Cabin filter appears fine. I have noticed that after driving the car in A/C mode for awhile and park it there is no condensation dripping. Should the condensation drip in front of pass. door on DHS's like all other cars? Maybe my condensation hose is stopped up? Link to comment Share on other sites More sharing options...
franey Posted August 26, 2004 Report Share Posted August 26, 2004 THIS TIME OF YEAR IF YOU ARE NOT GETTING ANY CONDENSATION DRIPPING AFTER THE CAR HAS BEEN IN ONE SPOT FOR ABOUT TEN MINUTES YOU MOST LIKELY HAVE A STOPPED UP DRAIN HOSE. Link to comment Share on other sites More sharing options...
Ranger Posted August 26, 2004 Report Share Posted August 26, 2004 I agree with franey and that's probably causing mildew growth which is what you are smelling. You may need to cut a hole in the air box where it says "cut here to service" and scrub the evaporator with a tooth brush and rinse it to get rid of the smell (after you open up the drain). Link to comment Share on other sites More sharing options...
RonW Posted August 26, 2004 Report Share Posted August 26, 2004 Unclog the drain then run the car with blower fan on high and spray lysol into the fresh air intake . That will kill the mold and get rid of the smell. Link to comment Share on other sites More sharing options...
Ranger Posted August 26, 2004 Report Share Posted August 26, 2004 DO NOT use lysol (unless you like the smell of it). It will kill the mold and get rid of the smell, but you'll just trade one smell for another............. trust me Link to comment Share on other sites More sharing options...
mackaliceter Posted August 27, 2004 Author Report Share Posted August 27, 2004 I have a '00 DHS which has a terrible dirty sock smell when in vent mode. When compressor is on there is no smell. Cabin filter appears fine. I have noticed that after driving the car in A/C mode for awhile and park it there is no condensation dripping. Should the condensation drip in front of pass. door on DHS's like all other cars? Maybe my condensation hose is stopped up? I agree on the danger of using Lysol. I don't like the smell of Lysol and would hate to get stuck with that. NO THANKS The drain hose is A OK. I guess I will have to live with it. I never have the odor in A/C mode. I have the odor intermittently in vent mode. I am still puzzled why I have never seen water dripping out?? Link to comment Share on other sites More sharing options...
KHE Posted August 27, 2004 Report Share Posted August 27, 2004 You don't have to live with the stench.....If the drain hose is not clogged, you should see condensate draining when the air conditioning is in use. If you do not see condensate, the hose is probably plugged. Use a length of weed whacker line to unclog the drain. GM sells a two-part chemical to disinfect evaporators. The two parts are mixed together and then a air/siphon gun is used to saturate the evaporator core. After letting the system sit for 10 minutes, flush with about a gallon of water using the air siphon gun. The GM chemical is EXPENSIVE.... One of the components is chlorine bleach based on the smell and the other is a mold inhibitor I suspect. I have had success using a very weak solution of chloring bleach and water - about 4-5 parts water to one part bleach. After you clean the evaporator core, enable the afterblow feature through diagnostics. The afterblow will run the blower motor for a predetermined time to dry out the core so the mold cannot come back. If you are not comfortable doing this work, your dealer can perform the service. I would estimate one hour of labor at the dealer. Kevin '93 Fleetwood Brougham '05 Deville '04 Deville 2013 Silverado Z71 Link to comment Share on other sites More sharing options...
Greg P. Posted August 27, 2004 Report Share Posted August 27, 2004 Just an idea here. You may want to enable the "afterblow" feature, which will run the blower fan for a while after the car has been shut off. I have heard that this will prevent mildew growth in there and it may de-stinkify your car. Link to comment Share on other sites More sharing options...
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