Question about 1999 Chevrolet Astro

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Remove the rear heater core on a 99 astro van

Have a core leak for the back heat on my astro van. Core seems to be on the rear drivers side behind the drivers. How do you get access to the core

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Remove the inside trim panels on the left hand side. Most "snap" into place, but look for screws first before pulling on the panel edges.

Posted on Dec 03, 2014

  • Lakeland Appliance Service

    Forgot to mention: you can replace the core OR just bypass it if the additional heat source is not needed.

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Posted on Jan 02, 2017

  • 16 Answers

SOURCE: leaking coolant from rear heater core in my astro van

you can hook the two line together that will fix your problem with no problems

Posted on Nov 25, 2008

  • 1 Answer

SOURCE: no rear heat

There is a seperate heater core for the back of the Suburban. It is located behind the right rear interior quarter panel. You have to pull everything back there the heck apart to get to it. The blower motor is located in the same area, so if you should be having any issues with it, plan on doing them both at the same time. Also, you have to drain the whole coolant system, so if you need to do anything with the front heater core (doesn't sound like you do), plan on doing that at the same time too. Good luck!

Posted on Dec 21, 2008

  • 508 Answers

SOURCE: Heater hose, 95 Astro

SOUNDS AS THOUGH THE HEATER CORE IS PLUGGED. TRY BACK FLUSHING IT AGAIN. IF YOU STILL GET NO FLOW IT IS MORE THAN LIKELY PLUGGED AND WILL NEED TO BE REPLACED. THE TUBES ARE VERY SMALL AND PLUG EASILY WITH RUST.

Posted on Jan 24, 2009

  • 324 Answers

SOURCE: rear heater core line leaking, can I fix w/ rubber

yeah hose and clamps are the cheap easy way to go there, or if your lucky, the leak is right at the spot where the hose meets the metal and you can just cut the end off and put it back with the old clamp

Posted on Jun 27, 2010

SOURCE: The rear heater in my 2000 astro van blows but

Are you sure it has rear heat? Most only have rear A/C.

Hope this helps

Posted on Feb 14, 2011

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1 Answer

I have 2000 astro van and I'm not getting heat, I changed thermo stat and flushed heater core. Still no heat, whats the next step?


Feel your heater hoses. If both are hot, the core is circulating. If only one is hot-poor or no circulation of the core.
If the heater core is circulating, the temperature blend door may not be working to let blower air pass across the heater core, and into the vents. If vacuum operated, watch the vacuum valves as you move heater controls-you may spot the problem. Check that the vacuum line from the engine to the control switch is working and still connected. If not operated by vacuum, the controls may have cables to the heater case or may be electrically operated. You'll just have to scope it out. Good luck.

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99 grand caravan ..carpet is soaking wet on passenger side and in to the rear on the passenger side. I bypassed the heater core on the drivers side but still continues to leak water and antifreeze. Is...


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I have a 2001 chev Astro van. The rear heat blows hot heat and the the front is warm/cool. The antifreeze is full. any idea what could be wrong


If you have two heater cores on your van, the front heater core may be stopped up by rust or stop leak if any has been put in it. It is a common problem i have seen. or your blendoor

Jan 08, 2011 | Chevrolet Astro Cars & Trucks

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How to replace a heater core in a 2002 chevy astro van


Heater Core Removal & Installation To Remove:
  1. Drain the engine coolant.
  2. Release and reposition the outlet heater hose clamp at the heater core.
  3. Remove the outlet heater hose from the heater core.
  4. Release and reposition the inlet heater hose clamp at the heater core.
  5. Remove the inlet heater hose from the heater core.
  6. Remove the screws that retain the cover to the heater case assembly.
  7. Remove the straps that retain the heater core to the heater case assembly.
  8. Remove the heater core from the vehicle.
To Install:
  1. Installation is the reverse of removal.
  2. Refill the cooling system.
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Aug 12, 2010 | 2002 Chevrolet Astro

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Our 2001 Chevrolet Astro Van heater not working?


Could be a bad heater core, any fluid leaking around it...check under the carpet and padding if you don't see anything under it on the ground. Your coolant may also be low, and it isn't circulating to the heater core, or a vacuum line may be off the hot/cold gate on the heater box, there are a lot of possible causes, but i would check for leaks and fluid level first

Nov 28, 2009 | 1999 Chevrolet Astro

1 Answer

Heater hose, 95 Astro


SOUNDS AS THOUGH THE HEATER CORE IS PLUGGED. TRY BACK FLUSHING IT AGAIN. IF YOU STILL GET NO FLOW IT IS MORE THAN LIKELY PLUGGED AND WILL NEED TO BE REPLACED. THE TUBES ARE VERY SMALL AND PLUG EASILY WITH RUST.

Nov 29, 2008 | 1995 Chevrolet Astro

1 Answer

Leaking coolant from rear heater core in my astro van


you can hook the two line together that will fix your problem with no problems

Nov 22, 2008 | 1997 Chevrolet Astro

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