GM Parts Club
Most cooling system problems announce themselves well before they strand anybody. On a 2018-2024 Enclave, these are the ones worth acting on.
1. Crusty orange residue around a hose clamp or the surge tank seam
It rarely gets better on its own, and it usually gets louder before it gets expensive. Start by looking at water pumps.
2. A temperature gauge that climbs in traffic and drops back on the highway
This is the symptom people put off longest and regret most. Start by looking at thermostats.
3. Having to top off the surge tank more than once a year
This one is usually early, which is good news, because it is cheap to fix early. Start by looking at water pumps.
4. The sweet smell of coolant after shutdown with no visible puddle
This is the symptom people put off longest and regret most. Start by looking at radiators.
What to Do Next
GM’s long-life coolant is generally rated for 5 years or 150,000 miles on the first fill and 5 years or 100,000 miles after that. Hoses and the surge tank should be inspected annually once past 80,000 miles.
Engine, tow package and rear-A/C content all change the radiator and hose part numbers. Have the VIN ready.
Ordering is easiest if you have the VIN in front of you. Head to our Buick OEM parts catalog to shop by vehicle, or search for Enclave radiators to go straight to a part.
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