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    • M
      mortten replied to the thread Heater issues.
      14 Sierra would be a 15 Tahoe. Received the sensor and installed it. Scan data all checks. System worked as designed. 65 here now. Next...
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      Dodge Avenger. SIL has one.
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      mortten reacted to Doubeleive's post in the thread Heater issues with Like Like.
      I didn't realize when you said 2014 sierra that this is not gmt900 there should be more than just the sun sensor..... I see they removed...
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      mortten replied to the thread Heater issues.
      Ambient scan data shows within 2 degrees of a thermometer and the radio shows correct. I had the headliner dropped to fix an antenna...
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      mortten replied to the thread Heater issues.
      No sensor in the headliner. It on the on the dash in combination with the sun load and ambient light sensor. Thermometer shows it to be...
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      mortten replied to the thread Heater issues.
      Found the repair tree on Mitchell Pro Demand. I’ll run through it tomorrow. Most of it is checking the sensors with a scan tool against...
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      mortten replied to the thread Heater issues.
      • 797BFCE2-CA40-4B9A-A8D6-E56636002F69.jpeg
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      mortten posted the thread Heater issues in Interior.
      Not a Yukon but a 2014 Sierra. Guessing mostly the same. Has auto HVAC. Start the truck and after warmup heat works fine. After about 15...
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