Park your Cadillac on a level surface. Wait for the engine to cool down. Once your Cadillac engine has cooled down you can proceed by opening the hood. Pull the lever until you hear the Cadillac hood pop open. Next, you need to release the hood safety latch at the front of your vehicle.
Locate Coolant Reservoir
Next, locate the coolant reservoir (tank) on your Cadillac. This is where you add engine coolant reservoir is on a Cadillac. On a Cadillac, the coolant reservoir is located on either driver or passenger side of the engine.
Check Cadillac Coolant Level
Remove cap. Look at the coolant reservoir tank and note the low and high level. If the level is below the minimum mark you will need to add coolant or your vehicle may overheat.
Add Coolant / Antifreeze
Add engine coolant/antifreeze. Only add coolant type recommended by Cadillac. In case of an emergency, it is ok to use any color coolant. It is recommended that the system be flushed and filled with the recommended Cadillac coolant when possible.