Chevy Captiva Heater Not Working – How To Fix

By Max Anthony •  Updated: 01/06/23 •  3 min read

Chevy Captiva Heater Not WorkingWhen the Chevy Captiva’s heater doesn’t provide any heat, it’s one of the most frequent and annoying issues. Driving is significantly less pleasant when the heater isn’t working, and it may also indicate other problems.

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The heater isn’t working for two primary reasons, to put it simply. If it doesn’t turn on at all, it’s typically the blower motor or a wiring problem. If the heater is blowing heat but the air is cold, the heater core or the coolant’s path to the heater core may be to blame.

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Low Coolant

If you do not have a lot of coolant, your car will start to get hot; in fact, it may not be able to produce the required amount of heat.  If the line is low on coolant, the core of your heater may not be insulated well, causing it to become unwieldy.

In this case, you should check the level of coolant in the engine by looking in the overfill reservoir. The reservoir for the coolant that is pumped into the overflow reservoir comes from the top of the car, directly behind the car’s radiator.

There will be two different labels on the radiator to show whether it is “cool hot” or “cool cold”.

Some cars only get full hot. Remember to always be very careful when touching the cap of the car’s radiator if it is ICE COLD.

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Bad Thermostat

The thermostat in your Captiva is responsible for controlling the engine’s temperature. It enables water from vaporizing when the water in the fuel tank gets too hot and keeps coolant from leaking into the system when the vehicle is warm.

When a thermostat malfunctions, it can occasionally get stuck open. This makes it possible for the coolant to keep flowing into the engine. When this occurs, the heat may feel as though it is barely functioning, or you may find that it will function when the car is still but will cease once it is traveling down a highway.

After some driving, check the temperature gauge in your Captiva to see whether it is still in the same place it usually is. It’s a very solid sign that there is a problem with the thermostat if it appears to be cooler than usual. 

Heater Core

The heater’s core itself may malfunction. They are notorious to malfunction and clog over time. The ability to circulate coolant via a blocked heater core is compromised. Heat cannot exist without warm coolant flowing through it. Watch out for leaks from a faulty heater core as well. Check to see if the passenger floorboard is wet by feeling it.

Water Pump

If your engine keeps getting hot more quickly, but no heat is being produced by the heater, it could be that the water pump is acting incorrectly.

Try moving the engine up a gear and revising it a bit.  If the engine starts to get hot suddenly, it could be a sign of a faulty water pump or that the coolant is getting too warm.  In addition, the belt that goes from the house to a water well is deteriorating, and it is difficult to get the pump to work.

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Max Anthony

Max is a gizmo-savvy guy, who has a tendency to get pulled into the nitty gritty details of technology and cars. He attended UT Austin, where he studied Information Science. He’s married and has three kids, one dog and a GMC truck and a Porsche 911. With a large family, he still finds time to share tips and tricks on cars, trucks and more.