Cadillac CTS Quiz
Vehicle Care

Checking Coolant in the Intercooler System (CTS-V)

In this manual: Vehicle Care
Introduction — 6In Brief — 59Keys, Doors, and Windows — 64Seats and Restraints — 66Storage — 15Instruments and Controls — 169Lighting — 22Infotainment System — 95Climate Controls — 10Driving and Operating — 120Vehicle Care — 170Technical Data — 7Customer Information — 48OnStar — 35
~1min read

The vehicle must be on a level surface when checking the coolant level.

The super charged engine intercooler coolant fill neck is located in the engine compartment on the passenger side of the vehicle. See Engine Compartment Overview.

On the coolant fill neck, there is a cold fill region between the two horizontal lines shown.

Check to see if coolant is visible in the coolant fill neck. If the coolant is not visible or below the cold fill region in the fill neck, add a 50/50 mixture of clean, drinkable water and DEX-COOL coolant at the coolant fill bottle, but be sure the cooling system is cool before this is done.

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A quick Cadillac CTS quiz: every answer comes with an explanation and a link to the manual page.