I got recommended this video randomly by UA-cam and it read my mind. I just got the fluid I need im doing the rear and front diff and my transfer case fluid on my 2003 chevy trailblazer. Its weird it recommended this but im happy it did love the videos!
That cover plate looks waaaayyy better than mine. Rust belt driver here, my bolts and cover plate are looking super rusted out. Gonna take some blaster to it for a few days. Considering buying a new cover plate along with new bolts and gasket. My only concern is that that hopefully the new cover and gasket will fit well with the old diff body and not give me any leaks!
Thanks for the great video, have 2 trailblazers I have wasted the money on drain plugs in the diff covers, when changed the fluid once. I think all of the fill plugs are way too tight and no one ever changes it at the correct interval.
Great video Anna! Couple things I thought of. 1. after many years of working on TBs and many other cars about 15 years ago after constantly ripped up hands it dawned on me I should start wearing rubber gloves! They have made a HUGE difference since and saved my hands a ton of cuts and wear and tear! And I know that is especially important to a gal!=-) Also, the tubing on the gear oil bottle was a great work around and idea but thought a piece of duct tape wrapped around where you put the tubing on would hold it much better so could put more pressure on it with less chance of a mess on the ground. Plus, when you do the next bottle can just switch the pour spout from one bottle to the next! Other then that, great job! Also was wondering if at 140k your TB started to make noises in the drive train in the back? I have owned two of them over the past 16 years and have one currently with 105k and other sold with 155k. So have worked on many aspects of them for many years(cars have never been in a shop other then for tires) So was wondering if that is what brought you to this and if it fixed any humming you might have had? Thanks and God bless!
What a great suggestion about securing the tubing and just switching the cap to the second bottle. Thank you! I haven't experienced any humming or noise in the drivetrain and am not sure what that might be. I'm sorry! I think I just stumbled upon a ChrisFix video on changing the rear diff and realized I'd never done it. If you find out what the noise is, please let us know!
@@annao4621 Actually figured it out. Ended up being a separated tire! Replaced that and all smooth now. =-) Have you also done the transfer case on your trailblazer and the front differential? Those are typically done around the same time. Was not sure if yours was two or four wheel drive. Mine have all been 4wd. Found a good deal on the actual GM transfer case fluid also if your interested. Also was wondering if yours has the cold air intake valve on the side of the engine? The first one I had was an 04(not sure what year yours is) and had that and it went bad I think 3 times! The thing ran a ton better after replacing it though and got better gas MPG. Anyway, something to check at the miles you have on yours and maybe even just go ahead and replace. My 02 I have now which was a barn find with 60k a couple years ago does not have one! Nice thing. Either way, thought I would mention that also since its an easy fix and makes a difference and they seem to go out a ton and were an issue with the mid year ones. You also may consider getting a knock off coil replacement pack set also if you have not already. I did that about 30k ago and it REALLY improved the idle and smoothness of the engine. All of these are just stuff off the top of my head after 16 years!LOL There was muvh more but those are the ones that seemed to really make an impact or be a weak point. Like the gauges going out! Fixed that also over the years and is common on GMs. Anyway, thanks for the response and will watch for any of your new videos! Have not done a wiper motor and hope I do not have to.=-) Seriously though, have thought about how maybe I should start doing the same when I do a fix on it just to help people. Have thought about it over the years but just have never done it.(just did a water pump for example and found a little hack that was nice so could have done that one) Other then that, thanks for the response and let me know if any of this helps!=-)
i have the same car. your oil change video really helped a lot . been thinking about doing what being shown in this video but i want to know what are the benefits of changing your diff fluid?
Thank you that is great to hear! GM considers the diff fluid to be a lifetime fluid, but it is still surrounding moving metal gears that wear over time (like a transmission). So one benefit is to remove the old oil with suspended metal particulates that may accelerate wear and tear on the differential gears (preventative maintenance).
Ah yes good idea! I guess the only drawback is not getting to put eyes on the gears and what has accumulated on the magnet and to clean it. Definitely a good option for anyone concerned about snapping the bolts though (what a pain!), thank you for sharing!
A little over 200,000! GM considers the diff fluid a lifetime fluid and doesn't suggest a maintenance interval. My Haynes manual suggests changing every 60,000 miles though.
I am not sure! Advance Auto and Rock Auto have both ring gear sizes listed for for the EXT (and the short wheel base like mine) and I can't tell if the gaskets are the same size. Both have 10 bolt holes though, so I'm thinking they are the same. Sorry I can't be of more help!
The gas mileage is not great. I usually get about 16-17 mpg on average with mostly city driving. Long trips on the interstate get 20 mpg. No major problems in all this time! Lots of little things of course, especially in the last 2-3 years. The biggest issue I've had was needing to replace the torque converter because it would chatter in lock up under load or disengage, but I could still drive it. Had that done at around 205k miles. Other minor things include the thermostat, gear shifter linkage bushing, secondary air injection, VVT solenoid, alternator, windshield wiper pulse board, idler pulley, valve cover gasket, O2 sensors, end links... There are more but I can't think of them right now. How long have you had yours? Have you run into any problems?
Yep! Or risk warping the cover. Not sure how much of a concern that is in this context, especially with a metal gasket. If anyone reading the comments knows, please share! Also, FWIW, the Haynes manual lists the torque specs for the 8.6" ring gear differential cover bolts at 18 ft-lbs rather than 20 ft-lbs like mine.
@@annao4621 ok yea i wasnt gonna superman them down lol i was just thinking of using my 1/4 inch drill but ill just use my torque wrench thanks..i see you have the haynes manual.. i keep trying to pin point the exact size of my rear diff it would happen to list it there would it...
@ryan McIntyre 💪💪💪 I dug it out to try and answer that very question to figure out the gasket question, and it does not say! But here's a forum thread that says the EXT has the 8.6" ring gear: www.trailvoy.com/threads/how-to-figure-out-size-of-rear-end-i-have.26346/ Not sure how to verify though 🤔
"Yes!!!! Gotcha bitch!!" I felt that success and feeling of relief.
😂😂 those moments are so satisfying!
I got recommended this video randomly by UA-cam and it read my mind. I just got the fluid I need im doing the rear and front diff and my transfer case fluid on my 2003 chevy trailblazer. Its weird it recommended this but im happy it did love the videos!
Yeah what's the deal with social media reading minds these days?? Anyway, thank you so much for your feedback. Hope your project went well!
Great video! I have a 06 chevy trailblazer with 223k miles and I'm sure the diff fluid had neverrrr been changed! I plan on doing it soon!
😂😂 So it goes! Hope it goes quick and easy for you. Thank you for your comment and for watching!
That cover plate looks waaaayyy better than mine. Rust belt driver here, my bolts and cover plate are looking super rusted out. Gonna take some blaster to it for a few days. Considering buying a new cover plate along with new bolts and gasket. My only concern is that that hopefully the new cover and gasket will fit well with the old diff body and not give me any leaks!
That's some clean looking fluid for that many miles!! ❤
It's almost like it was done before hand lol
Well this is new 😀 you're the first female mechanic I've seen not using gloves that didn't mind getting down and dirty
Good video. I'm a maintenance nerd randomly watching this. Do have a trailblazer though...it's a quirky thing.
QUIRKY! I wholeheartedly agree 😂
Mauru'uru Anna O. I have the same car in Tahiti and it is simple before seeing your video. Thank's !
Hope it helps! Good luck tinkering! 😊
High quality content for someone with this low of people like wow amazing detail should be proud
Chin up King, we all deserve the best. And thank you 😊
Thanks for the great video, have 2 trailblazers I have wasted the money on drain plugs in the diff covers, when changed the fluid once. I think all of the fill plugs are way too tight and no one ever changes it at the correct interval.
Haha glad to know I'm in good company 😂😂
Super well done on this!
Hey thanks!
Just an awesome video
Thanks so much!
Thanks for sharing,great video. Indeed gotta make sure you can get the fill plug out first before doing any other work to rear diff.
This was a pretty picture perfect way of changing the fluid. THANK YOU!, you were super clear about how to do things
That's awesome to hear, thank you so much! Hope your tinkering went well 😊
Great video! Thanks for sharing.
Thank you! And thank you for watching and your comment!
Great video. Thank you.
So much easier with the spare tire out. Plenty of room great job.
Oh yeah I bet so! I was too lazy to drop the spare 😂
Excelent video Ana, I Have a TB 2005 and that procedure I need to do.
Thank you so much! And that's awesome, hope it goes well!
There not bad, I did mine with tire on to, carquest gear oil good thro
Great video
Nice how to video.
Thank you!
Awesome video 🔥🔥
nice
Thanks!
@@annao4621 I have to do the same. Switching to 4.10 gears first.
great job
Thanks homie!
Great video Anna! Couple things I thought of. 1. after many years of working on TBs and many other cars about 15 years ago after constantly ripped up hands it dawned on me I should start wearing rubber gloves! They have made a HUGE difference since and saved my hands a ton of cuts and wear and tear! And I know that is especially important to a gal!=-) Also, the tubing on the gear oil bottle was a great work around and idea but thought a piece of duct tape wrapped around where you put the tubing on would hold it much better so could put more pressure on it with less chance of a mess on the ground. Plus, when you do the next bottle can just switch the pour spout from one bottle to the next! Other then that, great job!
Also was wondering if at 140k your TB started to make noises in the drive train in the back? I have owned two of them over the past 16 years and have one currently with 105k and other sold with 155k. So have worked on many aspects of them for many years(cars have never been in a shop other then for tires) So was wondering if that is what brought you to this and if it fixed any humming you might have had? Thanks and God bless!
What a great suggestion about securing the tubing and just switching the cap to the second bottle. Thank you!
I haven't experienced any humming or noise in the drivetrain and am not sure what that might be. I'm sorry! I think I just stumbled upon a ChrisFix video on changing the rear diff and realized I'd never done it.
If you find out what the noise is, please let us know!
@@annao4621 Actually figured it out. Ended up being a separated tire! Replaced that and all smooth now. =-)
Have you also done the transfer case on your trailblazer and the front differential? Those are typically done around the same time. Was not sure if yours was two or four wheel drive. Mine have all been 4wd. Found a good deal on the actual GM transfer case fluid also if your interested. Also was wondering if yours has the cold air intake valve on the side of the engine? The first one I had was an 04(not sure what year yours is) and had that and it went bad I think 3 times! The thing ran a ton better after replacing it though and got better gas MPG. Anyway, something to check at the miles you have on yours and maybe even just go ahead and replace. My 02 I have now which was a barn find with 60k a couple years ago does not have one! Nice thing. Either way, thought I would mention that also since its an easy fix and makes a difference and they seem to go out a ton and were an issue with the mid year ones. You also may consider getting a knock off coil replacement pack set also if you have not already. I did that about 30k ago and it REALLY improved the idle and smoothness of the engine. All of these are just stuff off the top of my head after 16 years!LOL There was muvh more but those are the ones that seemed to really make an impact or be a weak point. Like the gauges going out! Fixed that also over the years and is common on GMs.
Anyway, thanks for the response and will watch for any of your new videos! Have not done a wiper motor and hope I do not have to.=-) Seriously though, have thought about how maybe I should start doing the same when I do a fix on it just to help people. Have thought about it over the years but just have never done it.(just did a water pump for example and found a little hack that was nice so could have done that one) Other then that, thanks for the response and let me know if any of this helps!=-)
i have the same car. your oil change video really helped a lot . been thinking about doing what being shown in this video but i want to know what are the benefits of changing your diff fluid?
Thank you that is great to hear! GM considers the diff fluid to be a lifetime fluid, but it is still surrounding moving metal gears that wear over time (like a transmission). So one benefit is to remove the old oil with suspended metal particulates that may accelerate wear and tear on the differential gears (preventative maintenance).
Thanks
Sure thing, and thank you!
Did this solve the howling?
Yet another video of proof that a lot of girls r smarter than guys. Well done 👍🏼
😂😂 Thanks!
I put a siphon hose in the fill hole and suck it out. Don't want to risk breaking rusty bolts on the diff cover
Ah yes good idea! I guess the only drawback is not getting to put eyes on the gears and what has accumulated on the magnet and to clean it. Definitely a good option for anyone concerned about snapping the bolts though (what a pain!), thank you for sharing!
Ty
Use 50/50 acetone and transmission fluid on the fill plug if you can't get it to budge.
what is this sorcery you speak of?
Also, I will absolutely try this next time. Or maybe just to try it. Thanks for the tip!
Yep. It does work
No problem
How many miles on it before you changed it ?
A little over 200,000! GM considers the diff fluid a lifetime fluid and doesn't suggest a maintenance interval. My Haynes manual suggests changing every 60,000 miles though.
Also i have a 2005 tb ext ls 4.2 do you happen to know if the gasket is the same thank you in advance
I am not sure! Advance Auto and Rock Auto have both ring gear sizes listed for for the EXT (and the short wheel base like mine) and I can't tell if the gaskets are the same size. Both have 10 bolt holes though, so I'm thinking they are the same. Sorry I can't be of more help!
@@annao4621 i was thinking the same i also checked my local oreillys and it says it fits but you know how that goes lol.. thanks appreciate it
@ryan McIntyre Haha yep! Good luck!
EXT is 8.6 short wheel base is 8.0
👏🏼👏🏼👏🏼
How is your trailblazer on gas mileage? Have you had any major problems owning it for12 years?
Also my tb is a 2wd do i still have to do this to the rear?
Yep!
The gas mileage is not great. I usually get about 16-17 mpg on average with mostly city driving. Long trips on the interstate get 20 mpg.
No major problems in all this time! Lots of little things of course, especially in the last 2-3 years. The biggest issue I've had was needing to replace the torque converter because it would chatter in lock up under load or disengage, but I could still drive it. Had that done at around 205k miles. Other minor things include the thermostat, gear shifter linkage bushing, secondary air injection, VVT solenoid, alternator, windshield wiper pulse board, idler pulley, valve cover gasket, O2 sensors, end links... There are more but I can't think of them right now.
How long have you had yours? Have you run into any problems?
10ft then 20ft lbs? Correct what would happen if i over tighten them would it cause the gasket to leak?
Yep! Or risk warping the cover. Not sure how much of a concern that is in this context, especially with a metal gasket. If anyone reading the comments knows, please share!
Also, FWIW, the Haynes manual lists the torque specs for the 8.6" ring gear differential cover bolts at 18 ft-lbs rather than 20 ft-lbs like mine.
@@annao4621 ok yea i wasnt gonna superman them down lol i was just thinking of using my 1/4 inch drill but ill just use my torque wrench thanks..i see you have the haynes manual.. i keep trying to pin point the exact size of my rear diff it would happen to list it there would it...
@ryan McIntyre 💪💪💪 I dug it out to try and answer that very question to figure out the gasket question, and it does not say! But here's a forum thread that says the EXT has the 8.6" ring gear:
www.trailvoy.com/threads/how-to-figure-out-size-of-rear-end-i-have.26346/
Not sure how to verify though 🤔
@@annao4621 ok thanks i appreciate it.. rock auto the same gasket you used says it fits 8 and the 8.6 i guess ill just go for it and see!!!
@Ryan McIntyre 🤞🤞 Fingers crossed they are the same! Let me know how it goes!
I'm in love. Absolutely love a woman that can work on a vehicle
That *CLANK* YHHHEEEESSSS 😂
Please take off your watch while working on your truck. You'll thank me someday in the future. :)
Good advice and you're right! I always take it off when I'm in tight spaces and down in the engine bay. Thank you for your comment and for watching!
Lol got u b lol that funny
😂 You know that feeling
You’re so cute!