How to Install Transmission Cooler Bypass Radiator - GMC Canyon, Chevrolet Colorado, Hummer H3
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- Опубликовано: 28 май 2020
- Transmission Cooler on Amazon: amzn.to/3cgQx0p
How to Install Transmission Cooler Bypass Radiator - GMC Canyon, Chevrolet Colorado, Hummer H3
In this video I am installing external Transmission Cooler on SUV Truck
#transmissioncooler #transmission #cartransmission #suvtransmission
Step 1: Mount Transmission Cooler
Step 2: Route Transmission Cooler lines
Step 3: Remove transmission lines connected to radiator
Step 4: Measure, cut and connect new Transmission hoses lines
Step 5: Plug transmission line holes in radiator
Things to keep in mind when installing Transmission Cooler:
- Keep rubber hoses away from sharp edges, hot exhaust pipes,
manifolds and points of wear
- Do not kink hose or bend it tightly
- Transmission Cooler should be mounted at least 1 inch from fan and 6 inch
from exhaust manifolds
- Do not overtighten hose clamps. Overtightening can cause failure
When installation is completed:
- Check transmission oil level and add if necessary
- Take your car for a short drive and check for leaks
- Inspect hoses periodically for hardening, cracking and leaks
Deals & my Gears on Amazon: www.amazon.com/shop/hummansunson
Disclosure: As an Amazon Associate I earn from qualifying purchases
Disclaimer: This video is for entertainment purpose only! NewRoad assumes No liability for property damage or injury incurred as a result of any of the information contained in this video. Use this information at your own risk. Please consult your qualified auto technician 
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Hummer H3 How-To videos: ruclips.net/p/PLLoEAO8f1zNw_B1--I0JluUt4TVVohLox
Wow awesome video!! Clear clean video footage and instruction!! And you didn’t waste my time with what day it was.. the days temperature, cloudy not cloudy.. or that your grandmother loves to drive that vehicle! Straight, to the point and very comprehensive! A rare find!Thank you! Thank you!
Thank you!
Excellent video -- short, to-the-point instructions, great camera work, and no needless chatter.
Careful workmanship is evident throughout the video.
HOWEVER, 😁, there's room for improvement, thusly:
1. Your "Stacked Plate" type cooler is mounted UPSIDE-DOWN -- should be mounted with HOLES UP to avoid air pockets and achieve maximum cooler efficiency.
2. Should use "Fuel Injection" type Hose Clamps -- They clamp tighter without damaging the rubber hoses.
3. It's NOT COOL to by-pass the internal radiator Trans Cooler. NOT recommended by the "Stacked Plate" cooler makers. ONE Japanese car maker had cooler tanks fail abnormally, while the overall failure rate of cooler tanks is VERY small, and NO cause for alarm.
Those concerned with the coolant tank failure should GUARD against it, by checking the Coolant for ELECTROLYSIS.
Place the "+" probe of your Voltmeter into the Coolant (engine WARM), and the "-" probe on the Battery NEGATIVE post. Should read less than 0.4 Volts DC.
If experiencing high electrolysis readings, run a GROUND cable from the ENGINE BLOCK to the NEGATIVE Battery Terminal.
I've run a B&M 13,000 btu "Stacked Plate" Trans Cooler for over 16 years and over 180,000 miles -- and I live in Phoenix, the hottest big city in the U.S.A. .
Coolant is routed from Transmission OUT to Cooler IN -- Cooler OUT to Transmission IN.
The Cooler Maker's (B & M) Instructions said to do it that way, and it has worked perfectly for years of scorching desert driving.
www.mercuryforum.com/forum/grand-marquis-14/1995-grand-marquis-restoration-8937/
Very nice Humman, thanks! I see you doubling up on the hose-clamps - right on!
You bet
Nice work thanks for sharing your work and information, cheers👍👍👍
No talk just good instruction. Great!! I also installed a power steering pump cooler on mine.
Nice 👍
THANK YOU SO MUCH! AWERSOME VIDEO! Man - Really appreciate you.
Glad it helped!
Really awesome video, thank you.
Thank you
Nice Video!
Very nice ur working .. thanks for the sharing.
Thank you! Cheers!
Great video!
Wow some people clearly don't understand what all the pros are to this especially when there are no cons if the unit is sized appropriately for the application.
Well done keeping your "cool" LOL
In other news the OEM trans rad loop is a great method of heating water for off-grid shower and if an indirect system is utilized it is 100% potable!!
But heh what do I know...just a former Navy nuclear engineer prepping for this next on my '06 @ 72k!
Awesome!
Wonder work!!!!
Nice job.
Thanks!
Great idea. Going to do the exact same thing on my 2015 Ram. Only thing I’m going to do differently is to have the fittings on the cooler pointing upwards. That way the cooler should be “self bleeding”. i.e. any air inside the cooler will not be trapped in there.
Good idea. BTW, my setup works fine and cooling more than I expected
@@NewRoad what are your temps like? I have a slightly smaller version on my car but still have it go through the radiator one first, problem is it still seems to get to the same temps as before.
180F in summer and 120F in winter max, I am in Canada.
@@NewRoadthe in/out should on the right,left ,or facing up. Not facing down. You should post correct mounting videos.🤦♂️🤷♂️
@@NewRoadIt is not recommended to mount the cooler with the fittings pointing down as this may create an air pocket in the cooler resulting in reduced cooling efficiency.
Decent ima do this
The clamps being used to hold the rubber hose to the metal transmission lines are a risk. They could slip off over time and release all the fluid, which would cost another transmission. They’re under persistent pressure. They should be crimped on at the point where the rubber meets the metal transmission lines.
Good point, most important - rubber hose should go over the metal lips on both trans line and cooler and clamps should be behind the lip to prevent slippage
GM engineers goofed up. Thanks for the remedy!
Glad to help
Great vid. Are the factory hoses 3/8 diameter?
Great video bud!
My only suggestion, is that center support is blocking quite a bit of the cooler. That's going to reduce it's effectiveness significantly.
I considered the same placement of mine initially but then opted to put to the the right of the support so that the entire surface gets hit with fresh air.
Thanks. I thought about it as well - but here is my thinking:
- My main goal was to separate trans cooler from radiator so fluids don't get mixed if radiator breaks. Even if I get 50% efficiency from cooler it is still better than internal in radiator.
- By rough calculation by measuring how much the support is blocking is ~25%. However, it might be less - since I have 1 inch gap between support and cooler - which will allow air circulation.
- The cooler rating is higher than I need for my H3 - GVWR up to 24,000 pounds, towing up to 5,000 pounds. That should compensate for blocking part of cooler
- I have only 3 months when outside temp is about 77F, the rest of the year is much lower. I don't tow and I don't go to desert :-)
@@NewRoad yeah, I did the same... Completely bypassed the built in cooler.
NewRoad Adventures You tow 5000lbs?
@@lordsonic4567 I don't tow, but I do a lot of offroading and overlanding
@@lordsonic4567 l tow up to 5000 lbs. with my 69 f-100 , 300 straight 6 cyl hooked up to a C6 auto transmission. It's got more than 100k for sure. I've got a trans. fluid Cooler out of a 95 Ford f-350 dually. Bypassed the radiator, not quite as big as in video but l got to thinking of replacing it with the one shown. Cause l live in part of US where temps. reach 100 degrees and up to 110 sometimes for 5 mos. a year. Maybe adding an electric fan too. I haven't had any trans. problems yet, but l got to thinking since l don't have a trans. Temp. gauge. This was a very well done video. I'm out the door on my way to Napa! Does it matter which way the inlet and outlet face? Up,down or to the sides? Thank you.
This is exactly what I was looking for. I want to bypass the internal cooler so no chance of mixing fluids. What did you use to plug the old connection points on the radiator?
My wife's big ear plugs for now until I find proper solution 😊.
@@NewRoad Honestly it probably doesn't matter too much if it's not going to be used again.
The idea of keeping the radiator cooler in the trans fluid loop is to add a quick warm up cycle for the trans fluid. I can see this being an issue in the north / high country but in Oklahoma where I am, may be unneeded. Just my 2 cents. Cheers.
Good point, not sure how much it is going to hurt transmission if it takes longer for transmission fluid to warm up. I am in Canada, so far so good... even though the TFT is always between 130-170°F and takes longer to warm up
@@NewRoad 170 isn't a bad temp...I think HOW you drive (easy) when cooler is more important than a cooler temp issue...warming an engine in frigid climates is a good idea anyway which gives the tans a bit of a head start...
@@ronmoore5874 agree
The skid plate/ air deflector on the colorado is different than on the H3 so drilling at the bottom won't be as straightforward as the example in the video. I routed mine through the bottom passenger side corner of the radiator I also had to cut some plastic from the skid plate. I have a 09 colorado v8 idk if it's different on the I5/I4 models it shouldn't be.
Thanks for additional info for Colorado owners
Hi just came across your video. Found it very detailed. Is the cooler still running? How are the temps since you bypassed the stock cooler.
Cooler is running awesome, and sometime the temp is lower than I expect, especially in winter...
Another Great video New road ! !.... Have you had any problem with engine radiator getting hotter because its covered more now with tran cooler ?
Thank you. I have not notice any difference in engine temperature - but big difference in transmission temp
@@NewRoad OK Thanks again man ! ! !
Does anyone have experience that installing outside cooler has actually eliminate the transmission hardshifts? I noticed that shifting is good while oil is cold and hardshifts occurs after the oil has warmed-up after running few blocks. As if tranny is experiencing shortness of oil. Tranny is newly overhauled with new solenoid pack, speed sensors, clutch, plates, and all CVI's are within the range. Any help will be appreciated. Thanks for your time. Car is Dodge Grand Caravan.
nice video ,one question what order i have to put the hoses?
I don't think it matters, just make sure you tight clamps very good and ideally go over the lip on transmission lines.
Can you also bypass the oil cooler from the radiator? I have a 2005 Hummer H2 and I’m doing the fan conversion but those Oil cooler lines are in the way of the new fans. I just want to do an external oil cooler to the front of the grill and call it a day. I’m need to plug the oil cooler lines from the radiator tho. What kind if plugs do you recommend?
I am not familiar with H2. Are you referring to transmission fluid?
Awesome video going to do this to my 2011 Chevy Silverado. What hose size etc did you use? What did you use to plug radiator inlet/outlet? I was thinking some JB weld 😂
I used this cooler which comes with long hoses: amzn.to/3cgQx0p. To plug radiator... don't lough... I used ear plugs and tape 😂 as a temporary solution.... but it is still there since I don't wan to weld it permanently in case I want to go back to original config
what diameter and thread are the longer bolts you used? Thanks.
Don't remember, will have to check
What are your average trans temps now?
I installed a CRF radiator and put this cooler inline with that after it. Trans stays at about 175 now on a hot day on highway. (Compared to being at 200+)
I have not seen my trans temp going higher than 183F on very hot day, and I am happy with it
@@NewRoad I have H3....no trans temp gauge...how are you reading the temperature?
@@terryvaughn677 I am using ScanGauge 2 - here is how I setup: ruclips.net/video/4XxPsBD1qAQ/видео.html
Which trans cooler did you go with?
I've got this one: amzn.to/3cgQx0p
I am about to do the same thing to a 2015 suburban and a 2002 Tahoe. I have had 2 different friends radiator fail and water get into the transmission and smoke them. I also live in the south and don't need the radiator to heat up my fluid. I am just concerned about the rubber lines failing down the road. I am also going to use fuel injector hose clamps. How long have yours held up?
I installed this one 4years ago - no issue at all. Rubber hoses are tick and manufactured for high temp. Just make sure you properly tight hoses to line and cooler - rubber hose should go over the metal lips on both trans line and cooler and clamps should be behind the lip to prevent slippage
@@NewRoad Gotcha. Thats how I planned on doing it. Now if the temps will cool off a little.
It is cooling more than I expected, never go higher than 180F even when outside is 93F
Does it matter if inlet and outlet ports are facing downward? My overhauled transmission was fixed and I told them to install tranny cooler and disconnect from radiator. They installed cooler with inlet and outlet ports facing down like yours, but looking at a lot of youtube videos almost everyone puts the ports to the side. One youtuber says because if ports faced down the fluid won't circulate all the way to the top of cooler, only 50% of cooler will be used, but if put with ports on side all aluminum fins would be used. Thanks for the video, any feedback appreciated.
I don't have scientific comparison or any proof to support any theory - but in my case, it does what it suppose to do - cool off trans fluid. In fact, it does it so well that I need to put some isolation for winter because the temp stays too low.
Here is what I have to monitor trans fluid temperature - ruclips.net/video/4XxPsBD1qAQ/видео.html
Hoping for an answer since it's been so long since this was posted, but what do you plug the radiator lines with?
You will lough... 😄, I used ear plugs and tape to seal it. I planned that to be a temporary solution - but forgot about it and it's still there...
@@NewRoad came here just for this question lol, so what would be a permanent plug if that was just temporary?
How was your trans temp after that ? Thinking about doing it to my 2004.5 lly duramax. That's how all the older cars used to be done
More cooler than I expected... In summer it does not go above 180F, and in winter (I am in Canada) - it's actually stay too low and I need to put something in front of cooler to keep it warm 😁... stays around 130F... not sure if it's good to have it this low
Question. Is it okay to install the cooler with the hose downward just like you installed it? Im asking because i saw some guys debating in a chat and one of them was saying the hoses should be to the side with the hot pumping hose higher than the cold hose. If that makes any sense.
Yes, it's ok and work absolutely fine. It's actually cooling more than I need. I know about debate - but it's like debate about which engine oil brand is better 😄. Most important is to properly install it to make sure hoses don't detach. The hose end that attach to trans line should go over the lip and use 2 clamps to secure it
@NewRoad that's good to hear. Thanks for the reply. But I do have one more question. I did some research and I found out the cooler that was installed is a hose & fin cooler which I think is different than the one you installed. Does that make a difference? I noticed with the new cooler my Wrangler is still running at the same temp, getting hot amd possible going to cause the same problem. I need to drive in stop & go traffic to really test it out.
@@joeshunt6416 I didn't try other coolers, so can't really comment on that. How do you monitor temp? I have this one and it is really good at monitoring many parameters: ruclips.net/video/4XxPsBD1qAQ/видео.html
@@NewRoad I installed a glowshift gauge back in 2016.
Is that a regular drill fitted with a cutting bit? I can tell from the low RPM. My cheap ass plans to use metal cutting disk for Dremel on a regular electric drill, too.
Yes, I have very cheap drill - and it does work all the time 🙂
@@NewRoad Thanks! I just did mine today. Running good so far. Thank you for this!
How’s it holding up 3 years later?
Works better than expected... cooling more than I need, perhaps because I am in Canada 😄. If you do decide to install - make sure push rubber hose far enough behind the lip on trans line to install clamp behind the lip just to make sure
Dunno if it'd be a good idea to ziptie the hoses to the sway bar. It is always moving and could be a point of wear.
That's why there is protection around hoses
@@NewRoad Still, my guy. There has to be a way to keep them off a component that continually causes friction.
Others are buying factory cooler with four tubes and install together with aftermarket transmission cooler, and others just disconnect pipes from the current installed factory transmission cooler and take the pipes from the after market transmission cooler and connect it to the return hose pipe and the inlet pipe of the transmission direct. What is your opinion, what do you think is the best? ?
There are two main reasons people are installing and using a separate transmission cooler:
1. to prevent mixing of transmission and engine cooling fluids. Some radiators are failing and mixing both which destroys transmission
2. to reduce temperature of transmission fluid - this extends life of transmission
@@NewRoad i actually purchased the transmission cooler and i want to install on my Nissan car, but really i still can't install it as am getting confused whether i should by pass stock cooler or i should connect in series with the stock cooler, but i think nissan has different system where no way the coolant in the radiator can get mixed with the transmission fluid. Kindly hope you nay know about Nissan cars kindly advise me before installation which method is appropriate, thanks
@@edwinalexander1170 I am not too familiar with Nissan vehicles, I'm sorry. I would suggest to google and do some research for your specific car.
will hayden 679 fit? its 11" x 11"
i live in saudia arabia , the ambient temps here are much higher around the year.
yes it will, but 678 is more than enough
Nice but can i use both at the same time???
Yes, but the reason I installed separately is because... as radiator gets older it may leak and mix cooler and transmission fluid which can cause transmission failure
how is it in the winter when its colder?
I'm in Canada, so I put some isolation in front of trans cooler... otherwise temp would be really low.
@@NewRoad hi thanks Or quick reply I What do you mean by isolation? I'm from Wisconsin here and want to bypass the radiator, I had my old radiator internal failure and took out the transmission too cost me a petty penny to fix! I need to know before I bypass the radiator if it will be find in the winter
@@makosharkcnc7730 I use small piece of thermal buble foil and put in front of cooler. I might make small video-short to show. Never had time to think of anything better. I have gauge to monitor trans temp - so very handy to know when I need it or not
i would think just add a manual radiator fan switch so that you can turn on your radiator fans when needed especially in the summer or towing. It would cool your radiator down fast and your transmission fluid down if it is connected to your radiator. Just a thought instead of doing all this work.
The main reason for doing this is to avoid transmission destruction when radiator breaks and mix coolant with trans fluid
What difference will be
2 benefits:
1. Lower transmission fluid temperature - which extend live of transmission
2. Preventing mix of transmission fluid and coolant in case when radiator have leak between two. It can ruin transmission when transmission fluid and coolant mix
@@NewRoad thank you
Definitely purchasing
It is not recommended to mount the cooler with the fittings pointing down as this may create an air pocket in the cooler resulting in reduced cooling efficiency.
It is actually cooling more than I need, try it on you truck and let me know
Isn't that just trapping all the air in the trans cooler? I think you are generally supposed to have an inlet at the bottom and outlet at the top.
You can mount that way too. This way works just fine for me... actually need to cover it in winter since the temp is too low. Engine temp is no different than before installation. Running this one to monitor both temps: ruclips.net/video/4XxPsBD1qAQ/видео.html
You can actually route the hoses through the radiator cooler and the external cooler. Both!!
That is an interesting idea, haven't thought about that
So oil would run trough radiator and the cooler to trans and both will cool?
@@lordsonic4567 Yes someone posted a vid doing it with a Chevy Silverado.
The main point of installing the external trans cooler is to bypass the internal cooler. If the internal cooler fails, then trans fluid would mix with engine coolant and cause $$$$$ damage to both engine and trans. Install the external and plug the internal for best results.
@@johnmayo4301 The main purpose of an external cooler is increased efficacy. Internal coolers are inadequate. Routing lines through both with give you that much more cooling. Internal cooler failure is highly unlikely. All it is is an aluminum cylinder. I have never heard of one failing before.
I understand adding an external cooler but why bypass the radiator. Makes no sense to me. All it is is one long tube with bends. Solid 1 piece and those things dont fail - EVER! I seen the MOD(Milkshake of death) due to driving after an accident and another because of putting in a junkyard radiator. The fail on main radiator is 99.9 a split at the seam or maybe a bolt through the radiator at 70mph. I dunno..i see seperating it makes sense for less moving parts but the radiator is crucial in the engineering of it. If i were to seperate the 2 i would for sure Thermostatic fan it. -Manufacturers (including B&M) recommend to run aftermarket coolers in addition to the factory cooler, not to bypass the factory cooler.
This is to prevent mixing coolant with trans fluid when radiator fails... there are number of failures that you can find on the net
@@NewRoad no need to lol...lol..but at the end of the day...if it worked...it worked
Don't bypass the radiator though use both
The whole point of bypassing radiator is to avoid mixing coolant with trans fluid when radiator goes bad. It happened number of times with those and destroys transmission
@@NewRoad😆 you do realize there is like another little radiator inside of your radiator tank that the tranny oil flows through. It never mixes together. If a radiator fails it's going to be the plastic tank on the outside that leaks
It never mixes together until your 'another little radiator' 🤣🤣🤣 inside of 'big radiator' fails 🤣🤣🤣 - then the coolant mix with transmission fluid and your transmission 'kaboom' 🤣🤣🤣. Just google around and you will find explanation and reason why people bypass radiator
@@NewRoad
No dude I'm trying to let you know what you're talkin about is an auxiliary transmission cooler. Air-cooled only it's for like when your Towing and stuff. You have to have the cooling through the radiator for the transmission oil though. No way around that unless you like buying Transmissions. You know a lot of you dudes think I'm smarter than the engineers who designed this vehicle so you end up f****** a bunch of s*** up
Appreciate your feedback man. I don't think most people are smarter than engineers who designed the truck... but one thing they cannot predict is when specific part is going to fail. Just FYI, my trans fluid is cooling much better now after I installed external trans cooler. Perhaps I and many others are missing something - please do let me know what are the problems with bypassing radiator?