Burping the Sonic

[Miggy]

2015 Chevy Sonic Lt 1.8 No mods 50,000 Miles
I want to change the Coolant fluid and flush it as well. I want to make sure all the air is out of the coolant system, is there a air bleed screw on radiator

I will be using this procedure to drain and fill Chevrolet Sonic Repair Manual: Cooling System Draining and Filling - Information - Engine Cooling - Engine - Powertrain

and this one to flush the coolant system Chevrolet Sonic Repair Manual: Coolant System Flushing - Information - Engine Cooling - Engine - Powertrain

 

[Z71]

With only 50k miles, i would not bother to flush the system unless your coolant has been contaminated somehow. Factory coolant fill is good for at least 100k miles. You can just drain the radiator and refill with 50/50 mix of orange color Dexcool GM coolant and distilled water.

Leave the coolant overflow bottle cap off and idle the engine to get rid of air in the system. Squeezing the radiator hoses helps releasing trapped air as well.