jQuery not supported.

Heater core drain hose

Heater core drain hose

Postby 4sabre [OP] » Sep 29 2011, 2:46pm

There is what looks like a 90 degree drain hose out of the bottom of the heater core area on the firewall. Yesterday afternoon when the truck was started, water came out of this tube. Fan on only, no AC. It is running down the edge of the plastic inner fenderwell and dripping behind the right front tire. It is definately water and not antifreeze. I understand water coming out while the truck is running / AC on. I just wasn't sure about a puddle of water when the truck was initially started with the AC off.

Last couple of days has been dry here, no rain. Truck is an 04 Silverado ecsb Z71 with the 5.3.

Is this normal?
Original Poster
4sabre
Newbie
Newbie
Posts: 7
Topics: 3
Images: 8
Blogs: 0
Joined: Feb 13 2011, 2:47pm
Years of membership: 1 year of membership
Location: Berea, Kentucky
Year: 2004
Make/Model: Chevrolet Silverado
Extra Info: 1500 ECSB Z71 5.3L
Group Membership:
Registered users
Related Topics  How to change heater core hoses   coolant drain   coolant drain   drain plug   Where's the breather hose?   99 Silverado battery drain   trans fluid drain   5.3 metal on drain plug magnet   Power Steering Hose ends   Oil Drain Plug Torque Sepcification?   trans pan drain plug disaster   Engine Oil Drain plug O ring?   Wiper arm HOSE removal and reinstallation.   Leaking oil cooler hose, How do you replace? 
Climate Control Sponsor
Advertise Here

Re: Heater core drain hose

Postby lzn197 » Sep 30 2011, 12:42am

Yes. Probaby the last time you drove the truck, you had it on defrost which turns on the compressor which "makes water".

Word of advice from Gordon. ALWAYS turn your blower on high for a few seconds before you park the vehicle to "blow out" any water that may have accumulated in the heater/ac case (vehicle with ac only). Long term, it will prevent any bad odors that develop from standing water within the case.
Gordon
2004 Chevrolet Silverado Extended Cab Z71
Semi-retired Master Mechanic
User avatar
lzn197
ASE Certified
ASE Certified
Auto 4WD Mode [L3]
Auto 4WD Mode [L3]
Posts: 1655
Topics: 6
Images: 20
Blogs: 16
Joined: Apr 01 2010, 3:45pm
Years of membership: 2 years of membership2 years of membership
Location: Central Michigan
Year: 2004
Make/Model: Chevrolet Silverado
Extra Info: K1500 5.3L Z71 EX
Group Membership:
Automotive Technicians
Registered users

Re: Heater core drain hose

Postby Chasmanian » Sep 30 2011, 4:30am

Also high humidity will make for more water run off
Buying things I don't need to impress people I don't know.
User avatar
Chasmanian
Shifting into Second Gear [L3]
Shifting into Second Gear [L3]
Posts: 1294
Topics: 81
Images: 19
Blogs: 7
Joined: Jan 31 2011, 7:48pm
Years of membership: 1 year of membership
Location: Oklahoma
Year: 2007
Make/Model: GMC Sierra
Group Membership:
How-to Authors
Registered users

Re: Heater core drain hose

Postby 4sabre [OP] » Sep 30 2011, 2:12pm

Thanks for the advise. To me, as long as it wasn't oil, anti-freeze or brake fluid, no reason to worry about it. I more curious as to what was going on.
Original Poster
4sabre
Newbie
Newbie
Posts: 7
Topics: 3
Images: 8
Blogs: 0
Joined: Feb 13 2011, 2:47pm
Years of membership: 1 year of membership
Location: Berea, Kentucky
Year: 2004
Make/Model: Chevrolet Silverado
Extra Info: 1500 ECSB Z71 5.3L
Group Membership:
Registered users

Return to Climate Control

 

  • Similar topics
    Replies
    Views
    Last post
  • Heater Core replacement
    1991 Sierra
    by kaub07 » Feb 05 2010, 8:26pm
    2 Replies
    445 Views
    Last post by Tazz1781 View the latest post
    Jul 23 2011, 2:18pm
  • 8 Replies
    89 Views
    Last post by SilveradoSierra.com View the latest post
    May 18 2012, 6:31pm
  • How do I replace a heater core?
    by rcannon440 » Oct 27 2010, 2:19am
    6 Replies
    3819 Views
    User avatar
    Last post by jepics View the latest post
    Oct 28 2010, 2:31am
  • Heater Core Quick Disconnect
    Attachment(s) by vjw757 » Feb 19 2011, 10:44pm
    4 Replies
    977 Views
    User avatar
    Last post by olliepop2500 View the latest post
    Feb 20 2011, 7:41pm
  • Heater inlet hose
    Strange fitting. Need help fast
    Attachment(s) by rglickman » Jun 04 2010, 1:00am
    4 Replies
    2206 Views
    Last post by joshman416 View the latest post
    Sep 22 2010, 1:46pm
  • Heater Hose Removal
    Replacing coolant hoses and releasing the quick connection at the heater core.
    by TSC1969 » Aug 16 2010, 10:00am
    2 Replies
    1791 Views
    Last post by TSC1969 View the latest post
    Aug 21 2010, 11:24pm

Common search terms

heater high long last hose drain core brake couple came makes coming case fluid area turn always front right make looks tire thanks while running vehicle

It is currently May 18 2012, 6:31pm

Login  •  Register
SHOP TALK (Live Chat)
Climate Control Forum
Climate ControlTopics regarding the climate control in the cabin. Discuss things like air conditioning, refrigerant recharging, and dual climate controls, a/c vents, accumulator or defrosters, heater core, or fan inside the truck.
To create a new topic in Climate Control, click this button:
Previous topic Next topic
Sitewide News Sitemaps & Feeds

Who is online

Users browsing this forum: No registered users and 1 guest