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Re: How to change coolant on 2004 chevy silverado (6.6L duramax diesel)
There is a big hose that comes out of the bottom of the reservoir and either "T"s into the lower radiator hose or goes into the water pump in the same passage as the lower hose. When you fill the reservoir, it fills the system the same as if there is a cap on the radiator. I don't believe there are any drains on the block, just frost plugs. If you want to get every last bit of old coolant out, just drain as much as you can out of the radiator and remove the lower radiator hose and stick a running garden hose in the engine side. Start the engine up and wait for clear water to run out of the radiator. Once it runs clear, turn off the engine, turn off the hose, and reconnect the lower radiator hose. Add 1/2 the system capacity of straight antifreeze, and top off with water. If you've got the dex-cool sludge in it, I'd have it flushed with a chemical and replaced with universal green antifreeze.
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'04 Cavalier coupe M/T 2.2 Ecotec
Supercharged 14 PSI boost, charge air cooler, 42# injectors
Tuned with HP Tuners
http://www.boycottpepsico.com/default.aspx
So I go to this get-together at a friends house, not remembering it's a few days before Halloween. I see a bunch of dirty looking strangers. Then I see a guy that was clearly wearing a Halloween costume and I make the connection, and say "Oh yeah, Halloween... y'all goin' as a group of bums?". Turns out they weren't wearing costumes.
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