Q: Why would my Cadillac escalade overheat? It's at 215,000 miles.

asked by on

Our Cadillac Escalade 2003 with 215,000 miles has just started overheating and we have no idea what could be causing this.

Hi, thanks for writing in. I’d be happy to try to help you with this issue.

One thing that can cause an overheat is a clogged cooling system. If any part of the cooling/heating system is clogged, then the coolant cannot circulate. The radiator or heater core could be clogged.

Another is that the thermostat is not opening.

An overheat could also be due to the cooling fan not coming on due to a bad relay, bad fan motor, or bad temperature sensor.

One other thing that this overheating could be caused by is a failed water pump. The water pump impeller could have sheered off internally and is not circulating coolant.

If the cooling system has never been serviced or it’s been some time since it has, the least expensive place to start is replacing the thermostat and flushing the cooling system.

If you would like help looking at your car, consider having an expert automotive technician from YourMechanic come to your home or office to inspect and diagnose this overheating issue for you, and make or suggest any repairs as needed.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Why would my Cadillac escalade overheat? It's at 215,000 miles.

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Q: Why is my temperature gauge going up and down?

Hi There, It sounds like you may have a sticky thermostat or potentially a cooling fan that may be working intermittently. The thermostat regulates the flow of the coolant in your car's engine and controls when the coolant flows in...

Q: The fluid in the power steering pump is overheating.

Hi there. There is a blockage in the system causing the pump to purge and build up to max pressure. Check the hoses and see if there is any issues with fluid flow. If the steering is easy to move...

Q: Flex pipe leak

The flex pipe broke due to the motor mounts are bad and mounts should be repaired first and then an exhaust shop should be able to just replace the flex pipe for you.

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.