* Overheating: The most immediate and dangerous consequence. This can cause significant engine damage, potentially requiring a costly repair or even engine replacement.
* Warped cylinder head: Extreme overheating can warp the cylinder head, a critical engine component.
* Cracked engine block: In severe cases, the engine block itself can crack, leading to catastrophic engine failure.
* Head gasket failure: Low coolant can contribute to head gasket failure, another expensive repair.
What to do:
1. Do NOT continue driving. Pull over to a safe location as soon as possible.
2. Let the engine cool completely. Attempting to add coolant to a hot engine is dangerous.
3. Locate the coolant reservoir: It's usually a translucent plastic tank near the engine. Check the coolant level.
4. Add coolant: Use the correct type of coolant for your Suburban (check your owner's manual). Do not use water alone. It can cause further damage. If you don't have the correct coolant, adding a 50/50 mix of distilled water and coolant is better than nothing, but get the correct coolant as soon as possible.
5. Check for leaks: Carefully inspect the radiator hoses, clamps, water pump, and radiator for any visible leaks.
6. Consult a mechanic: Even if you add coolant and the light goes off, you still need to have a mechanic diagnose the underlying cause of the low coolant. A leak needs to be found and repaired to prevent future problems.
Ignoring a low coolant light is risky and can lead to very expensive repairs. Address this promptly.
