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heating

Hi there. Check the heater control valve on the heater hoses under the hood. The valve is controlled by vacuum. Check the vacuum lines and see if they have came off or split. With the engine at operating temperature, check...

It is not uncommon for the temperature gauge to drop when the heater is switched on, especially in colder situations (below 40 degrees f). The thermostat should be able to control the engine temperature in a way that you should...

Hello, this code represents a slow acting thermostat getting to engine operating temperature which is about 195 degrees. The computer monitors the time to get to operating temperature, if it takes too long it will set this code. The...

The BCM or body control module controls all of these items and there is a technical bulletin to get the BCM reprogramed. The reprogram should fix the issue for you. The dealer will have to do the reprogram for you....

The lines to the firewall could be hot and yet the heater control valve (https://www.yourmechanic.com/services/heater-control-valve-replacement) is not admitting the heated coolant to the heater core in the dash. So, you want to inspect that valve and make sure it is...

Check the operation of the heater control valve, which is often located on the engine compartment firewall. If that valve doesn't move to the commanded position, or move fully, you will have a no heat condition. If the valve is...

If the engine temperature is not abnormally low, then a stuck open thermostat is not likely to be the cause of inadequate cabin heat. Common causes of no cabin heat include malfunctioning blend door(s) (part of the in-dash ventilation network),...

Hello. There can be several components that will cause the heater (https://www.yourmechanic.com/services/heater-is-not-working-inspection) to fail. Always start with the simple options first. The heater relies on hot coolant from the engine entering the heater core where air is pushed over it...

There are two likely causes for your concern. Either your heater core inside your dashboard is clogged, or one of the doors that directs the air to your heater core is malfunctioning. I would enlist the help of a certified...

Hello. There are usually three potential culprits that cause this issue. First is that the heater core inside the dash is broken or clogged. Second, it could be a problem with the vents from the heater core to the vents...

Hi there. Check the heater control valve in the engine compartment that is in line with the heater hoses and the engine. If the valve is sticking or shutting off, then the heater will not produce enough heat for the...

Hello there, there are many faults that will cause your 1999 Chevrolet Tahoe's temperature gauge to only rise to 1/2 and the heat not function. The most common cause is air stuck in the cooling system, this commonly happens after...

Having an inoperative heated seat is not out of the ordinary. Most times the heater grid in the seat goes bad. Generally this happens over time just due to the fact that getting in and out of the seat flexes...

It sounds like you may have a faulty thermostat as well as a bad coolant temperature sensor. If the coolant is not getting to the heater core, then this would indicate a bad thermostat or a clogged heater core not...

This may be due to a faulty heater blower motor or potentially a bad heater core. As you may know, the heater core (https://www.yourmechanic.com/services/heater-is-not-working-inspection) is a small radiator like unit that circulates the hot coolant from the engine through the...

Hello. As you know, there are two main components to the heater in your vehicle. One is the heater core which uses the warm coolant passing through the motor (and the heater core), and the other is the blower motor...

The heated seats are a luxury feature that heat the front seats. This provides maximum comfort for the driver and the front passenger. To turn on the heated seats, press the heated seat button, which is a picture of a...

This symptom is usually due to a low coolant level. Restrictions in the cooling system or air can also cause this same issue. I would first start by ensuring that your coolant is at its proper level. If the coolant...

This may be related to a faulty blower motor or blower motor relay. The blower motor is a unit inside your vent system that blows warm air from the heater core to the vents when the heater is on or...

If steam is coming out of your vents, the heater core is leaking. Replacement of the heater core on your particular vehicle requires dashboard removal and should only be attempted by qualified technicians like ones from YourMechanic. They will be...