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Never took a look to see if there is a drain plug, but what ypu can do is drain some out of the radiator so there is air in it, then start the truck and let it get hot once it creates a vacuum it will suck up whats in the reservior and put it into the radiator. But it wont suck it up untill the engine is hot i believe.

Hope this helps

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night vision HID kit, Pacesetter LT headers dual exhaust flow master 40series dumped before the axle, vararam air intake, 1.5inch leveling kit, Dakota AT^2 tires, plastidipped wheels. raceland 3" cutout, SC 3865 tuned, rocket wire, aeroforce gauge in a SRT 10 pillar with A/F ratio, color matched gill, plasti dipped bumpers.

I just drained mine. I took the bolt of of the top that holds it in place. lifted straight up an held it on its side so the reservoir drained into the radiator. make sure you get the tabs on the bottom back into their slots when you put it back.
I have drained and refilled my radiator several times over 4 days so far, I drive it once and run the heat so the new water gets all mixed in with all the old fluid. Then after it is cool....Drain, Fill, Repeat. I am trying to get all the old coolant out before I add fresh. I live in Florida so I don't have to worry about it freezing.
Another good tip-
My Dad told me when draining the radiator and refilling you can get an airlock near the thermostat. Then with no water touching the thermostat it won’t get hot enough to open, and you could over heat the engine. To help prevent this, once you have filled the radiator, massage the top hose a little to force some water down past the thermostat.

If you just want to get it out of the resv, go pick up a turkey baster and suck it out.

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Its Tweaked & Twisted
Crazy Spartan on a 112lsa Thumping It, PWR Heads Opening It Up, Coated Pacesetters Doing The Rest, Tuned by Spooldu with DSP
Powed and Tuned by King Motorsports

take it off and turn it upside down

Being that they chenged over the coolent mount ect after 05 its not as easy to pull out as the older ones.... if memory serves me right. They went into the overflow actually being pressurized with the rad cap instead of stand alone correct?

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Its Tweaked & Twisted
Crazy Spartan on a 112lsa Thumping It, PWR Heads Opening It Up, Coated Pacesetters Doing The Rest, Tuned by Spooldu with DSP
Powed and Tuned by King Motorsports

Thanks not worth all that trouble.

Wal-mart sells a siphon pump that would work. It is a long tube with a bulb in the middle. Stick one end in the reservoir and the other end in a bucket and squeeze. Only costs a couple of bucks. Or the turkey baster idea would work the same way...just take a little longer.

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