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Schrade · 11-13-2013

I was able with all 4 GM's with Dex Red [Orange], to get the 'plug' out - IT FLUSHED FROM THE HEATER CORE EVERY TIME - with pressure from a garden hose. I'd put the hose to every coolant orifice I could find, and reversed from the other end when possible.

See if you can get feedback from Marc H on flushing LT5. Deference on alls' part here (save a few), goes to him...

There's a flow schematic recently posted here somewhere...

11-13-2013	#9
Schrade Join Date: Dec 2012 Location: NC Posts: 1,783	Re: Coolant Recommedation I was able with all 4 GM's with Dex Red [Orange], to get the 'plug' out - IT FLUSHED FROM THE HEATER CORE EVERY TIME - with pressure from a garden hose. I'd put the hose to every coolant orifice I could find, and reversed from the other end when possible. See if you can get feedback from Marc H on flushing LT5. Deference on alls' part here (save a few), goes to him... There's a flow schematic recently posted here somewhere...