Cadillac Check Engine Coolant Level

Cadillac Check Engine Oil Level

Is your Cadillac engine overheating, or does a check coolant light appear on your dashboard? Learn how to fix it by following the procedures below.


  • The engine is overheating.
  • The temperature needle goes in the HIGH range after a few minutes of driving.
  • Check Coolant Warning Message
  • Low Engine Coolant Message
  • The coolant level light comes on

What you will need

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  • GM Antifreeze Coolant 50/50


  1. Park the Cadillac on level ground.cadillac
  2. Allow the engine to cool down. Do not check the engine coolant level on your Cadillac if the engine is still warm. There is a high risk of getting burned!
  3. Pull the lever until you hear the Cadillac hood pop open.
    coolant reservoir

    Locate the Coolant Reservoir. The engine coolant expansion reservoir is where you need to add coolant.

    cadillac engine coolant reservoir
  4. Look at the side of the coolant reservoir tank and note the low and high-level marks on the side. If the level is below the minimum mark, add coolant, or your vehicle may overheat.
  5. Very slowly, remove the cap by turning it counterclockwise. Perform this step only after the engine has cooled down. cadillac coolant reservoir cap
  6. Add engine coolant/antifreeze. Only add coolant type recommended by Cadillac. It is recommended that the system be flushed and filled with the recommended Cadillac coolant when possible.

If you add coolant or the level is already full, but you are still getting the warning light, there is a good chance the coolant level sensor mounted on the expansion tank is defective. Do not continue to drive or keep the engine running if the coolant light says on and the engine starts to overheat.

We hope you find this guide, “Cadillac Check Engine Coolant Level,” helpful. Check these troubleshooting and repair guides for more help on your Cadillac vehicle.

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