Hummer Forums - Enthusiast Forum for Hummer Owners - Anyone know how to flush the radiator?

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c3 rolling

01-13-2009 12:45 AM

Anyone know how to flush the radiator?

I would like to flush the radiator soon, anyone have any tips + instructions?

tmleadr03

01-23-2009 12:50 PM

RE: Anyone know how to flush the radiator?

With the engine cold, pull the lower radiator hose off the radiator. Wait till engine stops poring coolant out. Put hose back on. Fill up. You will still have some old coolant left in the block.

I would also add a bucket to catch the coolant.

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