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Caddy Radiator Leaks

Owners of 2015-2016 Cadillac Escalade vehicles may comment that they smell coolant while driving or when outside of the vehicle. A coolant leak may be found under the front of the vehicle.

Technicians should start by inspecting the radiator for signs of leaks. Normally, signs of leaks can be found where the tubes attach to the radiator headers.

The condition may be the result of excessive thermocycles within the cooling system, caused by excessive cycling of the thermostat. These excessive thermocycles within the cooling system may cause the tubes to fatigue, crack and leak at the radiator headers. To correct this condition, a new thermostat has been designed that eliminates the thermostat excessive cycling.

If this condition is found, in addition to replacing the radiator, the engine coolant thermostat housing (with thermostat) must also be replaced.

New radiator.................refer to the electronic parts catalog (EPC), Group 1 for P/N

Outlet with thermostat............................... 12674639

Retainer, trans fluid pipe fittings (3)........... 24205103

Coolant U.S.A. ......................................... 12346290

Coolant Canada........................................ 10953464

Check for radiator leaks where tubes connect to the header tanks.
<p>Check for radiator leaks where tubes connect to the header tanks.</p>

Example of tube-to-header leak.
<p>Example of tube-to-header leak.</p>

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