2007 Tahoe overheated

[Mwilkey13]

Hey guys new to the group. I have a 2007 Tahoe. I was going down the road the other day and it overheated all of a sudden

The traction control light came and the turn the ac off engine was overheating. It went to 260 and we shut it off. I have changed everything thermostat and water pump. I checked the tank for cracks. I did bleed some air out of the system but it still overheating. Any ideas what to try next?

[txab]

Make sure there are no air pockets.

[Mwilkey13]

Ok how do it do that. I pulled the line off that goes to the heads and waited for the coolant to come out but it still is overheating