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Author Topic: Radiator  (Read 2222 times)
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teradekta
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« on: August 22, 2013, 06:46:24 PM »

Hi, looking to change coolant on 2010 Traverse. Cannot find a drain for coolant from radiator or engine block. Anyone know where these are located or is coolant changed by removing lower rad hose which would be a messy job.
Thanks
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medicrxdoc
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« Reply #1 on: August 22, 2013, 10:43:59 PM »

I don't think the rad has a petcock valve.  Remove the lower rad hose is what I did.
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rbarrios
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« Reply #2 on: August 23, 2013, 10:31:19 AM »

I would also do what Medic said..

Go to Wal Mart and buy one of these large storage containers
... Theyre about $5.

But theyre wide enough to catch stuff and not make a mess.  (the pic shows me draining the coolant on our ex 2007 Impala).

In the past- I also did the same on our 2003 Trailblazer.
On that one- I was at 130,000 and I was doing a coolant swap.
No draincock...

So because of mileage- I also decided to change the upper and lower radiator hose...
So I simply drilled a hole into the lower hose and let it drain... I then replaced them.


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2010 FWD LT1-Gold Mist Metallic- seats 8.
Build Date- July 31, 2009-2nd day of Spring Hill 2010 production.
2013 Equinox 3.6L -    23,000
2010 Traverse 3.6L-    80,000
2003 Trailblazer 4.2L-173,000
Bayner66
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« Reply #3 on: August 23, 2013, 02:30:39 PM »

My repair manual says to remove the radiator outlet hose (lower one) at the engine block and flex the hose downward to drain radiator. To drain engine block the two drain plugs on the sides of the block must be removed. Plugs should be tightened to 16 ft lbs upon installation.
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Bayner66
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rbarrios
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« Reply #4 on: August 23, 2013, 02:53:05 PM »

if your coolant comes out as nice and pink as the pic above ....
(my Trailblazer with 130,000 looked the same)

then I would not bother draining the engine itself. (to get rid of whats left in there)..
I could remove hose and let as much drain out...
put the hose back--- and refill with the 50/50 premixed  dexcool stuff from wal mart...


Why?
I dont want to introduce a new point of leaking by removing the drain plugs from the engine..
(If the engine was full of crud and gobs of dexcool thats been exposed to air--- then I would flush.
When I did the Trailblazer- I removed hoses, replaced, and didnt bother flushing the leftover coolant in the block--
there was no crud in there- I just refilled.

So on my 3.6-- if I didnt see any crud-- and coolant was nice and clear-- Id just refill.

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2010 FWD LT1-Gold Mist Metallic- seats 8.
Build Date- July 31, 2009-2nd day of Spring Hill 2010 production.
2013 Equinox 3.6L -    23,000
2010 Traverse 3.6L-    80,000
2003 Trailblazer 4.2L-173,000
greentraverse
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« Reply #5 on: August 23, 2013, 05:53:21 PM »

rbarrios - what did you do with the old coolant?  It's illegal to just pour it down the drain like we did in the "good ole days."
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rbarrios
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« Reply #6 on: August 23, 2013, 06:16:55 PM »

I store in containers--
when we have a Los Angeles County Hazardous Waste Roundup---

I take it in.....  (along with oil, used oil filters, paints, batteries, old meds, etc)
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2010 FWD LT1-Gold Mist Metallic- seats 8.
Build Date- July 31, 2009-2nd day of Spring Hill 2010 production.
2013 Equinox 3.6L -    23,000
2010 Traverse 3.6L-    80,000
2003 Trailblazer 4.2L-173,000
teradekta
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« Reply #7 on: August 25, 2013, 11:14:49 PM »

Thanks all for input. I agree with barrio that block drain is not required if  coolant is drained early and clean.  Anybody know what % of coolant volume is in the block? That's why I want to do mine now ( 120000 k's, 75000 miles). In many of my past vehicles with petcock valves I drained yearly during fall oil change because of the ease of doing it. Also some motors are very easy to drain blocks and just makes sense to do so, but others require you to be a contortionist to reach drain bolts.
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