03 Saturn Vue 6 cyl AWD Anti freeze in engine

Duplicate question already answered.

Sounds like a frost plug in the engine block has done its job. Taking the pressure and popping versus damaging the block itself. Not an easy repair so get several quotes on fixing this problem.

have the cooling system pressure tested
indicates a rusted out welsh plug in the head anti freeze and water is mixed in the ratio of 50:50 or 1:1 or 50%
so a gallon of water would require a gallon of anti freeze
That figure is the best to prevent corrosion and freezing of the coolant

VUE with a 6 cyl engine is a group size 86

VUE with a 4 cyl engine is a group size 75

You need to fill the expansion tank and the radiator with 50/50 mix, it will level itself out. There is no quantity, just fill it up. About 2 gallons.

First, you MUST verify if this has the CVT (continuously variable transmission) installed. If so, it requires special fluid along with anti-foam additive. Probably stocked only by the dealer. DO NOT add other transmission fluid to a CVT.

It must be leaking somewhere. pressure test the radiator system.
sometimes a blocked thermostat will push coolant out the overflow

Buy it new from many places Search Saturn Parts call local Dealer .
Happy Easter

2006 Saturn VUE AWD, same issue - only it was very intermittant and happened at very slow braking (like rolling to a stop sign) when it kicked in. Turned out it too was the wheel speed sensor. Although I had to take it to the dealership 2x, the first time they checked engine codes with no avail, and a visual inspection didn't show anything either. It was only when I happened to take it there on a day that it was happening frequently. They actually had to hook up the diagnostic computer, drive around, and get readings from the speed sensor to confirm it was shot.

The water pump is on the front of the engine. Does it look like a hose leak?