Where is the thermostat? I have a new radiator, I have a/c, but no heat, and I have to add coolant.
Thermostat is right on top of intake manifold. Either front or back of the engine according to my picture. But i think if you low on coolant your heater wont really work well. Need to find out why the coolant getting low. must be a leak somewhere. Here is the photo.
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My 2001 gmc jimmy keeps getting hot what could cause that
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