heat

Asked by GuruBV42K Dec 19, 2018 at 09:57 PM about the 2007 Hummer H3 4 Dr Base

Question type: General

a/c works fine but when i switch to heat fan works but heat does not and checked both heater hose's they are hot anyone know how to fix 2007

1 Answer
42,870

Hornet_2497 answered 5 years ago

Must be the blend doors stuck shut or the actuators not working. There might even be a fuse that powers the heater box components.

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