GM Truck Club
THE PREMIER CHEVY TRUCK & SUV FORUM
Founded in 2004 ~ We're the #1 Chevy Truck & SUV Forum.
Silverado & Sierra | Tahoe & Yukon | Suburban & Yukon XL | SUV & CROSSOVER

Adding rear climate control

Discussion in 'Chevy Suburban Forum (GMC Yukon XL)' started by DrumBound, Jan 20, 2014.

  1. DrumBound

    DrumBound New Member

    Joined:
    Jan 7, 2014
    Messages:
    36
    Likes Received:
    0
    I would like to add rear climate control to my suburban. Not anything crazy. Just roof or floor vents for my munchkins in the back. The weather here in the frozen north is, well, frozen. So the climate control up front keeps me kinda warm, but I worry about them more than myself. I was thinking about just getting a blower motor that will push mode cfm of air and not take too much modification. Then just going behind the dash and running some air ducts through my center console to the back for them. I have insulated the vehicle as much as I can, but it doesn't help if I can't get the internal temperature to a comfortable point in the back. Also, does anyone know of a cheap way to seal my doors a little better. Have replaced the weather stripping, but still feel a breezd coming in through the seals at 35mph. Thanks in advance for your help, and sorry for the long post.
    #1
  2. RayVoy

    RayVoy Active Member

    Joined:
    Apr 18, 2012
    Messages:
    2,122
    Likes Received:
    5
    Some Suburbans have a complete heat and AC unit for the rear seat area. do you have any roof vents in your truck?

    Adding this complete HVAC would be a big job and probably not worth the expense.

    Are you using all 3 rows of seats?

    Closing off the back, behind the last row being used will reduce the interior area that must be heated (it's done in vans all the time to keep the cab area small and warmer).
    #2
  3. DrumBound

    DrumBound New Member

    Joined:
    Jan 7, 2014
    Messages:
    36
    Likes Received:
    0
    Unfortunately I use all three rows. My truck doesnt currently have roof vents. Not too worried about myself being cold, more worried about my children. I wish I had the model with the rear climate control, but I am trying to figure something out to make do. Thanks for the input.
    #3
  4. RayVoy

    RayVoy Active Member

    Joined:
    Apr 18, 2012
    Messages:
    2,122
    Likes Received:
    5
    Even using all 3 rows, there may be some gain in closing off the rear behind the 3rd row.
    #4
  5. DrumBound

    DrumBound New Member

    Joined:
    Jan 7, 2014
    Messages:
    36
    Likes Received:
    0
    That is true. I have already started making plans for a divider for that portion. I am wondering if running vent lines through the upper console with some vents dumping in the second and third row would be practical. Only issue I would run into is how to get the there? Don't wanna run them up the windshield. And there isnt enough space in the A pillars. Just spit balling. Maybe run over the hump and through the center console and up after that is the best way. Just gotta figure out how to make it asthetically pleasing. Not worries about rearview mirror. Have reverse camera with monitor where factory center ashtray goes.
    #5
  6. RayVoy

    RayVoy Active Member

    Joined:
    Apr 18, 2012
    Messages:
    2,122
    Likes Received:
    5
    The most efficient way to heat, is from the floor (heat rises), under the front seat would be the best.

    Do you have room to add a small box with a fan and a hose running under the front seat?
    #6
  7. DrumBound

    DrumBound New Member

    Joined:
    Jan 7, 2014
    Messages:
    36
    Likes Received:
    0
    As in adding another heater core and fan into the cooling system? I think it would be possible. The center console in these trucks is cavernous. So putting something like a heater core and and variable fan in the box to distribute heat better could be one of the solutions to the problems. The only other problem I could see coming from that is the third row seating. The heat from the front row barely makes it back. But I will attempt this project and let you all know how it goes. I believe this is what you were alluding to yes?
    #7
  8. RayVoy

    RayVoy Active Member

    Joined:
    Apr 18, 2012
    Messages:
    2,122
    Likes Received:
    5
    Wasn't thinking of a second core, but could be done.

    If you have a center console, you should (may) already have a hose, or two going to the middle seat area. My Avalanche has console vents that blows air under the two front seats and one that blows air out the bottom rear of the console.

    Do you have any vents at the rear of your console?
    #8
  9. DrumBound

    DrumBound New Member

    Joined:
    Jan 7, 2014
    Messages:
    36
    Likes Received:
    0
    No. Unfortunately that only came in the rear climate control models. But two hoses are alot easier to hide than vent ducts. Thanks for pointing me in the right direction accidentally. I will continue to improve upon this idea. I might just run some vents from the floor heat to the center console. But I will see where this goes. Thank you again.
    #9
  10. RayVoy

    RayVoy Active Member

    Joined:
    Apr 18, 2012
    Messages:
    2,122
    Likes Received:
    5
    Have fun :happy:
    #10
  11. Pikey

    Pikey Moderator

    Joined:
    Nov 11, 2011
    Messages:
    4,232
    Likes Received:
    12
    you could always try to find a wrecked suburban at a pull apart place or even on CL and harvest all the parts out of it. I found a guy near me with a yukon xl denali that he is parting out. If you could find someone like that you can get the head liner and plumbing for the vents for the roof, the interior rear panels on the passenger side where the vent is along with the rear fan and all the rear heating components. The guy near me is desperate and would probably let all that stuff go for under $200. Just keep looking around you will find something.
    #11
  12. DrumBound

    DrumBound New Member

    Joined:
    Jan 7, 2014
    Messages:
    36
    Likes Received:
    0
    I would do that but there are only two problems. First is that I was looking at photos of the rear climate control and I just don't like the way it looks. Secondly, up here in the high for the week is -11 Celsius. This winter isn't supposed to get any better any time soon. So a heat source for now and adding a rear A/C unit in the future will probably what I go for. Not to mention vehicles this age usually are crushed at the junkyards here. Because 2000 model years have rusted out frames from the salt on the roads. I will keep looking in junkyards though. I have a feeling that I can at least modify the original ones to suit my needs.
    #12
  13. Pikey

    Pikey Moderator

    Joined:
    Nov 11, 2011
    Messages:
    4,232
    Likes Received:
    12
    likely any suburban/ yukon xl interior will work from 2000-2006. in mine, with the air directed to the floor vents, the heat comes out of a louvered section on the front of the rear passenger side panel, right on the feet of the people in the third row. even if you can get a heater and fan inside your panel it would probably come out of the same spot. I doubt that GM made specific panel for with rear hvac or without
    #13
  14. DrumBound

    DrumBound New Member

    Joined:
    Jan 7, 2014
    Messages:
    36
    Likes Received:
    0
    Well I started on my project of installing heat in my center console. With temps of -31 today it will be helpful when completed. Started off with my center console, a heater core from an 88 Sierra sitting in my garage, a 25cm 12v computer fan, and a blue led light strip just because I had it lying around. First I cut some slits for ventilation along the back and back corners. Next I drilled some overly large holes with a hole saw bit. Then I attached some angle braces to attach the heater core to and for a little added peace of mind. Next I attached the fan to the front side of the heater core to push the air through the heater core. I installed the blue light strip underneath the back lip for it to glow through the vent slits. All that is left is place the inserts in so that I have a box for the intake air and a chamber for storage, to hook up two valves to cut off the coolant flow when not needed and a twelve volt power supply. I will keep you all posted. Pm or post if you have questions or ideas. IMG_20140122_175946.jpg IMG_20140122_153205.jpg IMG_20140122_153213.jpg IMG_20140122_175957.jpg IMG_20140122_192312.jpg
    #14
  15. Pikey

    Pikey Moderator

    Joined:
    Nov 11, 2011
    Messages:
    4,232
    Likes Received:
    12
    I want to apologize. for some reason I thought you had a 2000 suburban, obviously my idea would not work
    #15
  16. DrumBound

    DrumBound New Member

    Joined:
    Jan 7, 2014
    Messages:
    36
    Likes Received:
    0
    So I got a little further with my project last night. I added a piece of 1/8" gray vinyl over the hole where my centet console lid closes from the old center console of my 88 Sierra. I also added some cheap foam weather stripping to the edges where my console lid closes so that it provides a somewhat better seal. I also added a switch to control the fan on/off. I will probably add a solenoid if the future to cut flow of coolant to the center console in the future. But for now manual valves will be installed. I kept the cubby underneath my my cupholders for storage. Installing it in the vehicle tonight and will be waiting on the parts I ordered to come in so I can finish the project. Was thinking about replacing the fan with a blower motor in yhe near future. But will see how this works first. Stay tuned and I will keep posting until done. IMG_20140125_231810.jpg IMG_20140125_231817.jpg IMG_20140125_231829.jpg IMG_20140125_231822.jpg
    #16

Share This Page