2001 Chevy Silverado Transmission Cooling Lines Leak - EASY FIX

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Got leaky transmission oil cooling lines? Check this EASY FIX first before you replace lines or parts.
If you enjoyed this video or it helped you, consider a Tip or Buy me a drink at Venmo: @Dangerson . Thank you!
FREEDOM GARAGE is a charitable ministry that loves on God's people through cars. We specialize in oil changes and basic vehicle maintenance for single moms, widows, seminary students, retirees on fixed incomes, and clergy/missionaries.
Our goal is to become a self-sustaining charity through social media by telling stories and creating how-to videos to help others. Please consider supporting us by subscribing to this RU-vid channel and checking out the affiliate links in the video description. You can also follow our Instagram page at Freedom_Garage_KY or show your appreciation through Venmo: @Dangerson

Опубликовано:

4 окт 2024

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Комментарии : 92

@jonathanfuller7330 Год назад

This has been the only video that shows what I was looking for thanks for posting

@thedangerson Год назад

Glad Freedom Garage could help. Thanks for watching.

@54swingline 2 года назад

Thank you -- I'm going to give this a try. Local Chevy dealership in Roanoke VA told me it would be $1200 to fix my leak.

@thedangerson 2 года назад

Hope it works for you.

@rong.7852 Год назад

I just had to put a water pump in my 01 today and noticed the dusty damp trail starting to form at the top fitting. Great to now know the O ring size needed. Thanks for posting the video. My 01 has just a shade over 450K on it and is the second water pump I've put in it. I guess it's about time for the O rings to be changed. Thanks again for this video.

@thedangerson Год назад

450k on your truck?!?! Way to go! Glad this video helped you to love on it.

@dupren4374 2 года назад

My 01 Silverado 2500 has been driving me crazy with the lower when leaking bought new line still leaked this helped tremendously thank you

@thedangerson 2 года назад

Glad it helped you! Thanks for watching. Feel free to subscribe and help me out.

@AugustoPanecatl Год назад

Got the freaking issue with my 2014 Silverado, was thinking about changing the fittings and lines, saved me some bucks and tiem, great video pal 👍🏻👍🏻👍🏻

@thedangerson Год назад

Glad it helped. Thanks for watching!

@donkrebs3554 Год назад

I appreciate the knowledge on the inner o-ring! I have run into multiple issues (intercooler bottom p/s) and had sum1 mention a broken seal! WELL THANKS TO YOU IK WHAT MY PROBLEM IS AND CAN AFFORS TO FIX MYSELF! TY FREEDOM GARAGE!!!🎉

@thedangerson Год назад

Our pleasure! Glad to be of service.

@SheppyZed 3 месяца назад

Great video!! Thanks. Every other video I found only suggested changing the whole line. Knew it had to be an oring of some sort.

@thedangerson 3 месяца назад

Glad it helped!

@jgrenwod 2 года назад

Excellent! No other videos mention the Oring.

@thedangerson 2 года назад

Glad you liked it! Thanks for watching.

@juancasias2991 2 месяца назад

Thank you.. I learned something New today.

@thedangerson Месяц назад

Thanks for watching!

@JerryGarcianotthesinger 7 месяцев назад

Thank you for the video. It is very informative. I see you used a black colored O Ring. In another video on U tube, I seen another mechanic had a Blue colored O Ring. And after some research, the Black O Rings are subject to deuteration by the ATF 4 chemicals. And I also found that green and yellow colored O Rings are manufactured to withstand oils and chemicals. This was the first time I seen a Blue colored O Ring. I think the video was by klowmy1960, labeled Leaking GM Transmission Cooling line Disconnect fitting.

@thedangerson 7 месяцев назад

Hmmmm.....interesting about the O ring colors and what they are made of. I used what I had on hand. Seeing as my truck has 326k on the odometer and I have a tray full of those black O rings, I will probably just make it a yearly change. I would be interested to know what the "real" O ring part number is.....and what it is made of. Thank you for sharing, and watching.

@JerryGarcianotthesinger 7 месяцев назад

@@thedangerson The part number is W5201 at O'Reilly's auto. it's a box of 270 HNBR Green assorted o rings.

@Qahtani99 Год назад

Fantastic thanks alot because our workshops techs said no seal inside

@thedangerson Год назад

Glad to help

@letsbereal-hd8qt 6 месяцев назад

The Dorman 800-604 worked in the transmission but there's a different one for the composite radiator. Its probably the one right next to it in the store.....

@jbandersoninspection 8 месяцев назад

Currently having leaks at the transmission coupler on a Silverado 2500 HD with the Allison transmission. None of the parts stores can locate new couplers and the dealership shows 7 "different types so I'm rebuilding these now

@josephshirah Год назад

I just replaced the radiator in my 2010 Tahoe this afternoon. It’s got a 5.3 in it and it looks identical to the one in your video. After putting everything back together I noticed the top line (just like the one you referenced) had a steady drip of transmission fluid. I would assume that maybe the o-ring isn’t in place. I did make sure to get a tight fit and secure the locking clip properly. Just had a steady drip once I turned on the car.

@thedangerson Год назад

Yeah, a steady drip means that something is out of place -- either the fitting or the O ring. While I am not 100% sure on a 2010, it wouldn't surprise me if GM kept a very similar configuration. Good luck finding the leak source.

@davidblack1928 3 года назад

Perfect video. Exactly what I needed.

@thedangerson 3 года назад

Glad it helped!

@joellive7564 6 месяцев назад

You the best brother 💪

@thedangerson 6 месяцев назад

Glad you liked it.

@jerry4302356 8 месяцев назад

Thanks, video help me a lot!

@thedangerson 8 месяцев назад

Glad to hear it! Thank you for watching.

@mr_bav2r 9 месяцев назад

Thank you this was very helful

@thedangerson 8 месяцев назад

Glad it was helpful! Thanks for watching.

@RogueKnight33 2 года назад

THANK.YOU!!!!!!

@thedangerson 2 года назад

My pleasure! Thanks for watching.

@l.w.f.c3291 2 года назад

Life savor ! Thanks

@thedangerson 2 года назад

Happy to help

@fonzyflowerz2804 2 года назад

I replaced the whole thing. A new nut with O-Rings on a 2011 silverado 5.3 V8. Brought it @ Auto Zone for $10.71.

@thedangerson 2 года назад

Well done!

@eduahpeteschwenk8453 Год назад

You can change the whole fitting also ? Only 6 $ at auto parts store.

@thedangerson Год назад

Mine didn't need replacement, just the O ring. But that is good to know.

@eduahpeteschwenk8453 Год назад

@@thedangerson i changed one whole fitting and the other just the oring. Both worked great. O ring definitely a cheaper option.

@condor5635 Год назад

Great idea it just scares me a little to remove the part from the radiator which I believe is plastic threads. Maybe try replacing the O-ring while it’s in place? Or is that too difficult?

@thedangerson Год назад

The O ring can only be replaced by removing the line so you have access to the fitting. Good luck and thanks for watching.

@rong.7852 Год назад

The fitting seats into a metal line section in the radiator. There's no worries of plastic threads.

@condor5635 Год назад

@@rong.7852- that’s good to know! Thanks

@rong.7852 Год назад

I thought about just pulling it and changing the O ring but decided to get a new fitting with O ring already in place and figured it the better way to go since the fitting needed to come out. Be sure to put a drop of T Fluid in the neck of the fitting to wet the O ring before installing it and a drop on the line as well. My 01 has >450K on it.

@maximobautista9671 Год назад

Thanks.🙏

@thedangerson Год назад

My pleasure!

@imyourhuckleberry5350 7 месяцев назад

I did this on my 01 hd 2500 and my upper transmission line is still giving me a leak it's driving me nuts. The rest of the lines are doing well after replacing the o rings

@thedangerson 7 месяцев назад

Following a mechanics philosophy "Go cheap, go easy", before replacing the line and connection, you might disconnect the upper one more time, clean the male and female connections, and try another O ring. Good luck!

@Thrasher6299 8 месяцев назад

Can I remove the fitting and swap the o ring without having to drain the coolant or disconnecting anything else?

@thedangerson 8 месяцев назад

@jaimegarcia5573 .....If I remember correctly, I did not drain my trans fluid when I replaced the O ring on the upper line. You MAY have to on the lower line. Good luck!

@Thrasher6299 8 месяцев назад

@@thedangerson thank you

@AntonioSanchez-zs2ep 2 года назад

Awesome appreciate it

@thedangerson 2 года назад

Glad to help

@michaeldunn9485 2 года назад

the plug on my 1999 new model Serria 1500 lower is welded in it seems; how would you go about getting the fitting off the plastic radiator tank w/o breaking the radiator

@thedangerson 2 года назад

If it were my vehicle, I would "unweld" it (probably unsuccessfully) or more likely I would go to the junkyard and get a transmission cooler from another truck and put that in. I recently had to do that with the AC condenser (sits right by the trans cooler) for my son's 1998 Sierra. Good luck!

@alex.8oh586 8 месяцев назад

i replaced the line and the fitting next day started to leak any answers?

@thedangerson 8 месяцев назад

Check that the line: 1) is firmly fitted into the housing 2) that the O ring is properly seated. Good luck!

@alex.8oh586 8 месяцев назад

@@thedangersonwill do this weekend

@thedangerson 8 месяцев назад

@@alex.8oh586 Good luck! Also, make sure everything is wiped down and clean. Any grit or dirt on the fitting or O ring could impact the seal and cause it to leak.

@1Bigmac69 Год назад

Exactly what I needed for my 6.0

@thedangerson Год назад

I am glad you were able to fix it. Well done!

@jirimarak2860 2 года назад

Hi I just replaced the radiator and I have a leak by lower line joint as you showed in video but it is coolant not a transmission fluid. Do you have any idea what is going on? I have chevy uplander 2006 3.5l.

@thedangerson 2 года назад

That whole area up front has your radiator, your trans cooler, and your AC condenser. If you are leaking coolant (and you just recently replaced the radiator), you have a leak in either the coolant lines or the radiator itself. Thankfully, those are easier to fix because they are just hose clamps. Check all connections. Thanks for watching.

@andrewcastro2530 Год назад

Did the procedure as you showed. Leaking again. Should I replace the connector w a new one or do the lines wear out at the contact point? Thanks in advance

@thedangerson Год назад

I am unaware of the connector or line replacement. However, following the troubleshooting mantra - "go easy, go cheap" - I would redo the procedure and clean both sides (line side and trans radiator side) of the connection really good. There could be grime, particulate, or residue preventing a clean seal. I would also blow off both with compressed air after giving it a good wipe down. If that didn't work, I would maybe step up to one size larger or one size small O ring to see if those sealed better. If none of that worked, you can go down the line replacement path. Good luck! Wish I was there to help you.

@andrewcastro2530 Год назад

I think it did hold up for a few weeks. I decided to get a new connector, Dorman Brand 6$ at Auto zone. No Leaks . Will monitor and keep an eye out. That little pick set was on sale for 1.49 at HF. I removed the air box and it made the the procedure much easier. Retired so I have time to do these little Maintenance fixes with a little help from guys like you on You Tube. So Thanks for what you do.

@thedangerson Год назад

@Andrew Castro.....so glad to hear you have it fixed. Thanks for watching.....and feel to stop by Freedom Garage if you are ever in the Louisville area.

@Valdemar-Perez-III Год назад

I should’ve done that to start off with rather than replace both transmission lines in the heat of the day lmao.

@MrCosmos110 2 года назад

Auto Ministry = Excellent Idea ! ! ! Colossians 3:23-24 ---> 23 And whatsoever ye do, do it heartily, as to the Lord, and not unto men; 24 Knowing that of the Lord ye shall receive the reward of the inheritance: for ye serve the Lord Christ. ...............

@thedangerson 2 года назад

Stop by if you are ever in the area. God bless you and thanks for watching.

@technicgaming1490 2 года назад

Thank you for forcing your false religion upon me

@letsbereal-hd8qt 6 месяцев назад

The adapter with the o ring included is Dorman 800-604

@thedangerson 6 месяцев назад

Thank you for adding that information for others to user. Thanks for watching.

@ralphsnyder6503 2 года назад

What size o-ring on a 2001 GMC Jimmy 4x4 it's bigger than the one your putting in

@thedangerson 2 года назад

I have no idea. But you might get that O ring kit from Harbor Freight and try the different sizes.

@Canon1DMkII 2 года назад

Had the same issue with my lower line.

@thedangerson 2 года назад

Super easy to fix once you know what's causing it. Drive safely.

@letsbereal-hd8qt 6 месяцев назад

The fitting adapter with the new O ring is $8.00

@thedangerson 6 месяцев назад

Good to know. Feel free to share the part number in a comment.

@RealDeal458 2 года назад

Could even brand new fittings that came already in the new radiator still have this problem?

@thedangerson 2 года назад

Anything is possible. This is an easy and cheap enough fix for you to check them just to make sure. The hardest part will be removing all the plastic shrouds around the radiator (which isn't a big deal). Good luck and thanks for watching.