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Old 09-17-2015, 10:41 AM
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2010 Grand Cherokee - no heat

Changed thermostat, heater cores is clean, no air in the lines/hoses. There is no heat coming from any vent when turning the temperature control knob to hot.

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Old 09-17-2015, 03:06 PM
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Re: 2010 Grand Cherokee - no heat

Could be the blend doors are stuck.

Search the forum, there is much discussion about them
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Old 09-17-2015, 04:39 PM
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Re: 2010 Grand Cherokee - no heat

Quote:
Originally Posted by dr.lee.baugh View Post
Could be the blend doors are stuck.

Search the forum, there is much discussion about them
Only other thing I can thihk of is to make sure that the coolant line heading into the firewall gets notably warmer when you turn the heat on. Turn the A/C off, heat off, let it run to operating temperature and then stick your pinky on the hose, then turn the heat on. If that gets warm, there is a method to create a hole in the bottom of the glove box to help diagnose, should be pictures somewhere here or youtube.
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