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Where is my heater control valve located?

Tiny
CHEVYCHRIS28
  • MEMBER
  • 1 POST
  • 1999 CHEVROLET S-10
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 30,000 MILES
NO HEAT
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Friday, February 15th, 2019 AT 6:20 PM (Merged)
Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
Check the heater hoses to see if they are getting hot. Those S-trucks used Dexcool which tended to plug up the heater cores. If hoses are not hot, then haev the heater core backflushed to clear it out. If hot, then you probably havea blend door actuator problem or a bad control head
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Friday, February 15th, 2019 AT 6:20 PM (Merged)
Tiny
DENNYP
  • MECHANIC
  • 1,824 POSTS
First, check to see if the temp door actuator moves when you turn the temp control knob. You should be able to see the motor shaft turn.
It is located behind the glovebox, on top of the HVAC box.
It is number 1 in the pic.


https://www.2carpros.com/forum/automotive_pictures/102900_393159_1.jpg

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Friday, February 15th, 2019 AT 6:20 PM (Merged)
Tiny
FLITEMEDIC
  • MEMBER
  • 3 POSTS
I know all that stuff. But where is the control head "they say is in behind the radio"
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Friday, February 15th, 2019 AT 6:20 PM (Merged)
Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
The control head is the panel with the vent/heater/ a/c controls
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Friday, February 15th, 2019 AT 6:20 PM (Merged)

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