Air bubble in heater core??? 2010 Denali

[Stimpy911]

I had a recent coolant leak which is now fixed. I had to replace coolant. I notice that at times my heat is not very hot. I read somewhere about getting an air bubble in the system after losing coolant.

Is there a way to test this theory of mine? Is there a fix to remove an air bubble if there is one?

Thanks

Steve

2010 Yukon Denali XL, 120,000 miles.

 

[Scottydoggs]

take both heater core hoses off, and flush one, a garden hose works. this will force out any air and re fill the core.

 

[Big Mama]

Doesn’t hurt to have the front end elevated a little too. Wife’s bmw needs burping every now and then too.