Black plate (22,1)Cadillac CTS/CTS-V Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-6014443) - 2014 - CRC - 4/3/1310-22 Vehicle Care3. Fill the coolant surge tank withthe proper mixture, to slightlyabove the FROID/FULL COLDline on the side of the coolantsurge tank.4. With the coolant surge tankpressure cap off, start theengine and let it run until youcan feel the upper radiator hosegetting hot. The upper radiatorhose is the top hose coming outof the radiator, on the passengerside of the vehicle. Watch out forthe engine cooling fans.By this time, the coolant levelinside the coolant surge tankmay be lower. If the level islower, add more of the propermixture to the coolant surge tankuntil the level reaches theFROID/FULL COLD line on theside of the coolant surge tank.5. Replace the pressure cap. Besure the pressure cap ishand-tight and fully seated.{ CautionIf the pressure cap is not tightlyinstalled, coolant loss andpossible engine damage mayoccur. Be sure the cap is properlyand tightly secured.Recheck the coolant level in thebottle next time you use yourvehicle to ensure the system is fullwhen cold.Checking Coolant in theIntercooler System (CTS-V)The vehicle must be on a levelsurface when checking the coolantlevel.The super charged engineintercooler coolant fill neck is inthe engine compartment on thepassenger side of the vehicle. SeeEngine Compartment Overview onpage 10-6.