Change antifreeze 2005 chevy aveo

I would start by replacing the radiator drain plug and I would also have the coolant system pressurized and checked for a coolant leak.

put it in resovour if theres no cap

Check battery and serpentine belt to make sure it is on correctly.

take the bottom hose off

There should be a drain plug on the passenger side of the radiator. If there is no drain plug and both hoses are at the top of the radiator you can pull the lines to the transmission. Adjust the flow coming out by taking off and putting on the radiator cap. Just make sure to reconnect the lines before you refill the radiator.

BUY YOUR RADIATOR HOSES FIRST MAKE SURE NEW HOSES MATCH THE OLD HOSES. BUY NEW RADIATOR CLAMPS AND HAVE EXTRA GALLON OF ANTIFREEZE. MAKE SURE ENGINE IS COOL IF YOU GOING TO CHANGE TOP RADIATOR HOSE REMOVE RADIATOR CAP OR OVER FLOW JUG CAP IF YOUR RADIATOR DONT HAVE RADIATOR CAP FIND RADIATOR DRAIN PLUG.PLACE A CATCH PAN.OPEN RADIATOR DRAIN PLUG CATCH ANTIFREEZE. DRAIN HALF ANTIFEEZE IF YOU GOING TO REPLACE TOP HOSE AND DRAIN OUT ALL ANTIFREEZE IF YOU GOING TO CHANGE LOWER COOLANT HOSE TO WATER PUMP.WHEN DONE CLOSE DRAIN PLUG.PUT ANTIFREEZE IN A SAFE PLACE FROM PETS AND KIDS UNTIL JOB DONE. WHEN YOU REMOVE COOLANT REMOVE WATER HOSE CLAMPS THEN REMOVE RADIATOR HOSES PUT NEW RADIATOR HOSES AND CLAMPS ON HOSES TIGHTEN HOSE CLAMPS DONT OVER TIGHTEN. POUR ANTIFREEZE IN RADIATOR.CRANK ENGINE UP CHECK FOR LEAKS.CHECK COOLANT LEVEL WHEN THERMOSTAT OPENS ADD MORE COOLANT AS NEEDED.

Aveos had a service bullatin for some 04 and 05 models. Bad valves, had to have head reworked and solved problem. took car to 3 chevy dealers to find problem..

You'll have to drain it from the radiator or taking off the bottom radiator hose.

Keith, Searched the net on this, a little confusion on this one and not a lot out there. The pan/ diff. cover has to be removed or at least loosened some to change the fluid. Check the attached link,instruction and guide, Good luck
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06 Manual Transmission Fluid Change Interval Spec and No Drain Plug
Manual Transmission Fluid Flush

I have a 2004 Dodge Ram 2500 and to fix this problem I removed the drain plug being careful not to damage the plastic housing. I drilled through the center of the drain plug so that I would not have to use force to get it out and crack the plastic housing. After you get it out you will see that there is a rubber washer that is used to seal the drain. NAPA sells a drain plug that will work to replace the stock plug. The part #605-1278 comes on a card that says for Ford/GM. but it worked perfectly for me.