Help! Changed coolant now overheating??

[scottb231182]

Hey guys,

I'm from Australia, and I'm wondering if anyone can help me out? I've got an '05 LS1, and I just drained the coolant out, flushed the system and refilled it....now the motors overheating! Cant fit anymore coolant in it if I tried. Any ideas?

Any help would be much appreciated.

Cheers,
Scott (AUS)

[silverWS6]

Air in the system?

[scottb231182]

I thought it might be. How do I fix it though?

[Mr. Luos]

This may be a stupid question....but how much coolant did you put in?
Did you add more after the thermostat opened up?

Otherwise, I would guess air in the system as well. Some vehicles have a bleeder on the coolant lines somewhere.

[SteveC]

+1 for air in the cooling system.

SteveC

[silverWS6]

What about running it with the radiator cap off and add coolant till its full......?

[SteveC]

Have you figured out what the problem was?

SteveC

[wheeliE-maxx]

What about running it with the radiator cap off and add coolant till its full......?

That's what I do with my truck, run it a couple of minutes and refill as the bubbles bleed. Not sure about how it works with the external tanks now though. It should have a bleed in the system. Some vehicles won't let air through the thermostat so there is a place to bleed them there

[Durango]

take the rad cap off let iut run until it stops bubbling and add to fill it might take 20 minutes or so

Good luck

[SOMbitch]

Sometimes I squeeze the upper hose to help "burp" the system.

[zeetwentyeight]

Crank the defrost as you are running it with the rad cap off and keep adding for about 10 min