Hi,
Great pics. I don't see any evidence of a coolant leak. The bleeder shows dry coolant right where coolant would come out when bleeding. Have you ever noticed a leak at that point when the engine is warm?
Here is what I'm going to suggest. First, if the coolant level is going down, there has to be a leak. Keep in mind, when it is overheating, there is a lot of pressure on the system. However, it shouldn't go beyond the rating on the radiator cap. In this case, 15 psi. See pic 1 below. I copied your pic.
Here is what I want you to do. When the engine is cold, remove the radiator cap in pic 1 below and confirm the radiator is full of coolant. If it is low, fill it with the correct type of coolant. These came with DexCool from the factory. If that has never been changed, do not add anything except DexCool or a universal type that indicates it is usable with DexCool. Reinstall the cap.
Next, turn the heater on high and start the engine and allow it to reach operating temperature. Check to see if you have heat. If you don't, turn the engine off. Feel both heater core hoses under the hood mounted at the firewall. Both should be hot. See pics 2 and 3 for the heater hose location. Note: It will be on the driver's side next to the brake master cylinder/vacuum booster.
Let me know the results. Also, remember to not open the radiator cap unless the engine is cold. Make sure it is full. There are conditions that will allow the overflow reservoir to show full but the radiator to be low.
Take care,
Joe
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Saturday, December 3rd, 2022 AT 9:43 PM