Burping LS cooling system?

[FLYNAVY53]

I've got an LQ4 in my '72 C20.....just replaced the radiator as the welds on the previous unit started to leak. I've noticed that now I'm running hot in stop and go traffic and its not even 80 outside yet...so I'm assuming I have air trapped in the system.



Whats the best way to burp/bleed the cooling system on an LS?

Thanks!