Driveway Demons yes sir it was, you just do not know the maintenance history of Mad Max. I would hate to know the cost of one of these transmissions if it went out. 😬
I use to work with a person who use to work at an Allison transmission place.. He was more of the behind the desk guy at that place. And I know someone who rebuilds Allison transmissions for a living. They don’t know each other but they both agree you don’t have to ever do the internal filter on the Allison unless you do a rebuild. That’s how they designed it. You have the outer filter and a drain plug. Don’t open up anything. Even if you’re doing heavy stuff. Just change the fluid and filter more
Thanks for making the video, very informative. One note I wanted to add is that manually selecting the gears doesn’t actually engage them. It only limits the transmission on the highest gear that it will shift into.
Great vid, thx for posting. Now I am not worried about tackling this job. People like you taking the time to make & post a video just makes the world a little bit better, at least for us DIY’ers 🤟🏼
When I got my new 2009 3500HD duramax… I put 500 miles on it, then changed the engine, transmission, transfer case and differential fluids. At 5,000 miles, I switched out the afore-mentioned fluids to 100% AMSOIL. 205,000 miles later, everything is still within factory new specs. I replace the spin-on Allison filter when I do the 10k/annual oil changes. Change transmission oil at 100k.
Allison repair and service says you do not change internal filter unless you are rebuilding the unit that is why they put on an external filter. That external filter runs straight into your pump. Allison’s are designed in a way that you change the oil in them like you do motor oil. Drain remove filter install new filter and fill. It can actually do more harm then good to change internal all the time. The wore down clutch material in the oil helps worn clutches to grab better when worn down
@@therealtrucker7564 I thought he was insane when he tightened the new filter with a wrench. He had hell getting the old one off and then put the new one on just as tight or tighter.
Just so you’ll know, that was probably the original fluid fill from the factory. I just pulled the pan off of mine yesterday to put a deep pan on it while I was changing the leaky cooler lines and putting a bigger cooler in the grille. I bought the truck new, and yesterday is the first time the fluid has ever been drained and changed. The truck is a 2007 K-2500 Classic, the inside of the pan wasn’t any dirtier than yours was with the fluid being just a bit darker than yours. I have changed to spin-on filter every 25 - 50K miles with an Allison brand filter every time except once. But I have to admit, you lost me when you put a filter wrench on it to tighten a filter that is only supposed to be hand tight. That is exactly why you had a hard time removing the old filter. Never ever, even less than that, tighten any spin-on filter with a filter wrench, hand tighten only. Allison recommends only changing the internal filter at overhaul time, even though they chose to put a reusable pan gasket on it to save you $40 or $50 on a new gasket. Obviously that’s out the window if you decide to put a deep pan on it like I did. You can do what you want though, it’s yours.
I know this is an older video but the manual says nothing about checking the fluid while the truck is in neutral. It actually says check it in park while the engine is running.
don't know why i watched this. i don't have a diesel.. That Allison transmision looks easy to work out. Internal and external filters with magnets on both. Nice! this transmission looks easier to service than my 2011 subaru outback cvt... Nice work bro!
the park paul is not controlled by pressure , its held in place with a spring , if pressure was holding the park paul it would release when the engine was shut off as there is no pressure , the fluid can be checked in park or neutral.
well, I took around 10 quarts out of my pan drop, I put 10 and a bit back in, an at 165 F in park, I am just at the beginning of the hot has marks, thought?
Lol that was what I was thinking when he said that. If fluid pressure controlled the parking brake the truck would just roll away when you shut the engine off. The is actually a wedge that pushes the paul into the dogs when you place it in park the spring is actually a return to keep it out of the way just finished the rebuild on mine
Draining the transmission fluid through the drain plug vs. dropping the pan should make little difference in the amount of oil that is changed. The reason people drain change the oil, refill, drive a few hundred miles, and then change it again is because that way it flushes the oil in the torque converter.... Not to flush more oil out of the pan.
It is actually quite a bit plus I left mine sit for a week waiting for parts and got another 2 litres after laying under it while taking the valve body off. I’d say an easy 4L difference between pulling the pan and pulling the drain plug
There’s no need to drop the pan. The internal filter is to be changed upon rebuild. It’s more of a strainer than a filter. The external filter is plenty.
You left out don’t overtighten the spin-on filter by putting it on with a filter wrench like he did. That is exactly why he had trouble getting the old filter off. Only hand tighten any spin-on filter, no wrench at all except to remove an old filter.
The gear selector doesn't actually change any gears, it's just a range limit selector. So if you're driving and have it in 3, the transmission will shift between 1st and 3rd as needed, but not to 4th.
Mine had 90 thousand before a fluid and internal filter change and the truck has towed heavy since new. My pan was cleaner than that and have only changed the external filter at every 30 thousand miles.
Very informative!!! Great step by step.... so far the Chevrolet duramax and allison set up has been fairly easy to maintain and trouble shoot....FYI...DELETE DELETE DELETE....I can't Express that enough. If your already happy with your dmax stock..... You'll be so happy with a deleted duramax 🤗 ps... brand new trans turn key from Chevrolet starts at $6800, Going with a junkyard pull out about $2500,A professional built with stage III shift kit conversion to hold up to 800 horses..... priceless
@@superjeep9633 EGR valve. I would nnnnever do that!!! If i felt like doing that I would put Two s.s. plates on the conector between the EGR cooler and the EGR valve. Make them with slots not holes for the clamp bolts. To pass smog in cally, they must be removed.
I bought my lbz at 100k changed the fluid (didn't remove pan) and I just changed it again at 160k and it looked twice as good as the fluid showed. I couldn't believe it, this truck tows a 17ft traiter loaded and plows my driveway in the winter. These transmissions are amazing.
A little warning for those that are doing this for the first time. In a stroke of engineering genius (not) the drain plug boss is about 3/4" above the bottom of the pan. When the fluid stops draining there is still a couple quarts in the pan. You have to carefully lower the pan and dump the rest into another receptacle. Or accidently drop the pan and you can clean up the fluid with speedi dry.
It is always a good idea( how I always do it and have done it) is after what you did..drive it for the 100 to 200 miles...and then do that again,because the first time you do the trans fluid change..the converter still has old fluid it. Not very many folks think of this.Costly yes..time,consuming yes..well worth it...and I change all the filters and drop the pan..everything times 2!
James Bailey Good day; My ole neighbor has a 2000 chevy 2500 diesel 4wd and a week ago he said brake pedal went to floor. IT has the hydraulic Fluid (power steering) brake booster . I tinker and want to try save him a buck. No complaint of steering issue. I felt underside at Master /booster union and feel minimal fluid. No puddle or honest trace of a external leak. I jumped in truck, hit brake pedal- to floor. I let truck run a bit then shut off - pedal to floor. I held foot on pedal and started - no build up. If I take foot off- pedal will return out. I have not worked on a hydr, just the old canister suction type. On another vid it was concluded a ABS pump was the prob on a like issue. I think the pedal/booster start /stop engine pre tests lead me to the booster. Greatly appreciate your thoughts if I have misunderstood sequence of diagnosing. Best; Tom
Great video,hat is the purpose of changing the pto covers unless they are leaking?I changed the trans fluid in my Duramax almost to years ago checking it with the transmission in park.I had no issues. Two drain and fills and did not change the internal filter as it is not recommended until the trans is overhauled.
Well that's crazy Michelle John some of this guys here they said is ok to do it sooo will do it on mine tomorrow morning sooo also I have a issue right. Now sooo shows a orange triangle and says check trans!!
Filter wrenches are for loosening filters only. I’ve heard a full turn past when the seal hits sealing surface. I always just crank on the filter as much as I can just with my hands. But using a filter wrench on a new filter may damage it. But at the very least you will have a hard time changing it next time.
New sub here brother! Great video man. I really appreciate the thorough explanation of how to service the Allison. Im definitely gonna save the 300 plus dollars I was gonna pay the dealership to service mine. Good looking out man!
Quick question: Bought a 2003 Duramax that had trans fluid/filter changed before i bought around 192k. Now has 235k and I'm going to change fluid and filter. 1.should i be dropping the pan or just a spin on filter and drain/refill? 2. Is Valvoline Merc VI good or should i be switching to Transynd?
Do you have to do the PTO covers? How many quarts total is required? is there a way to drain the converter with out driving draining and filling up with new fluid?
What year is your truck? I have 2020 gmc duramax 3500. It has no exterior filter. I would think it is better to drop pan and replace interior filter not just siphon fluid. Especially first service.
I have 2020 duramax. Transmission has not been serviced. Is it advisable to drain the fluid. Some around the local area say if you go that long it’s not a good idea.
Who are you?Gm recommends only changing the internal filter @ tear down & rebuild or 500k miles which ever comes first-my tuned 2004 LLY has 415k hard miles on it and still performing like it should.What are your credentials?where did you come up w/this super costly (in more ways than one) Allison service intervals?bought my truck new & have never had the pan off the 5 spd in my truck
Some RU-vidrs are learning as they go, no harm in that. Guy never claimed to be an expert. You're always free to create your own content with corrections 👍
Shop around for the fluid, local semi truck dealers have it on the shelf. I was at a local Freightliner dealer today ordering a deep pan for my Allison ($61, compared to the cheapest price of $100 I could find online) and they had Transynd for $47/gal. I like the Mobil Delvac 1, it's about $10 less per gallon than Transynd and is just as good.
lol @ "pavement queen." bars, anyhow, I really enjoyed this video man. Thanks for the help, new to Duramax and Allison and this is def the video for people who got their feet wet.
Can't always follow the manual; have to adjust ±0.3 quarts sometimes; previous person could have worked on this and not had it to specs, so dipstick and a few miles are your better bet here
I've been using Dex3 in my 03 Duramax, should I transition to Transynd or not? It used to tow/haul alot in its day, nowadays its a cruise to work n home truck.
+1 on the Transynd - Allison stands behind it and warrants against any damage due to lubricity issues. I did the entire system flush and filter changes on a former LB7 ('01) of mine and it ran for over 437K miles before we parted ways.
Anyone unhook a cooling line , add fluid then run till clean fluid come out ? Then put back together fill the rest of the way .., Wondering if that might get more fluid out ? Or not worth it Thoughts ?
For a 1st transmission service on my 2016 with 60,000 miles do I just follow what you did here in the video. PTOS ARE FINE. But for the pan, just drain pull.old filter out and replace then put together and refill per your video. Do you have a link for the gasket set up you used and the fluid??
Absolutely no reason to change the internal suction filter unless you are overhauling the transmission. There is also no reason to change the PTO gaskets unless you have a leak.
@@Giovanni_Litterini Yessir, that is correct. The internal suction filter (in the transmission sump), does not need to be replaced unless you’re overhauling the transmission. It’s a “rock catcher,” if you will. The filter actually filtering fluid is the external spin-on filter which has a defined maintenance schedule and is is absolutely necessary for proper transmission durability.
Seeing as how it isn't a big deal pulling the pan, and filters are cheap (I got an Allison internal deep filter for $22 from a local Freightliner dealer), why not do it every 100k? Gasket is even reusable, so no need to replace that, plus it gets a couple more qts of fluid out. While it may not be necessary, it also isn't going to hurt anything.
What could cause the truck to say it's unable to communicate with the transmission and shift all funny and clunky after changing the trans fluid and filter? 2010 silverado 3500 hd
I put 3 gallons and 1 qt. Into a 2017 gmc sierra 3500hd. I installed the PPE deep transmission pan. Checked and looked right . Does that sound about right.?
Thanks for responding. I got it took care of. Was little worried about the drop filter inside pan. It wasn't as tight as the oem one. ? Was yours little loose also
You should use Amsoil ATF. You can double your OEM drain interval, with trans fluid analysis, you can possible quadruple the interval or longer. Meets and far exceeds your spec listed. Disconnect transmission cooler return when flushing, after dropping the pan.
I run amsoil in just about all my stuff, but could not find any documentation that it meets allison specs. Because of that I am running transynd 668, which is allison recommended.
@@darinroske1189 If you give me your year, make and model, I will run down the spec for you. I will be glad to furnish the documentation. I will then be able to assure you, beyond a shadow of a doubt that the fluid meets and far exceeds the specifications.
@@ralfie8801oh damn. I know I'm gonna change the spin on I'm about 4k miles. I've heard some people say the same thing about changing their spin ok filter so many miles later. I don't want to get into that habit. Lol. Nice. In the future I'm gonna run her with some Transynd or Amsoil
Martin Becerra 25K is the service interval listed in the owner’s manual for the spin on filter. I only use the Allison branded filters. You can get them for a bargain price online at Merchant Automotive. They’re close to $40 each at the dealer. The last ones I got from MA were about $10 each. I think they went up a bit, but seems like they’re still under $15 + shipping, which is reasonable. In other words, they don’t make up the discount on your filters with overpriced shipping costs. I’ll be using the Amsoil version of Dex VI in mine since I get it at the dealer price. My truck is an LBZ like yours, but it’s an ‘07.
My local Allison repair facility would charge similar amount, but I found it on the web for under $45/gallon. MadJack Diesel is one source, but I'm sure there are others. Forget Ebay/Amazon- much higher prices.
Cory why would you not recommend: Mobil 1 Synthetic ATF. Mobil 1 Synthetic ATF meets the requirements of several different manufacturers, including GM's Dexron III. That is the top atf fluid. I find that your service is spot on, I will say no matter what the service & filter change normally makes it feel like a brand new box.
Allison makes the transmission not gm. The GM dealers use dexron VI for the allison. The TES recommendation by allison is the transysnd is the best for the trans. Mobile delvac ATF1 is the same fluid with a different label. If the allison logo/name isnt on the bottle Its NOT supported by Allison.
Thank you I have come across this before I had a friend who owned a parts shop and he showed me Lucas oil supplied all from the same depot just different labels the same with Lucas brake pads exactly the same pads same boxes same instructions different labels and labels on the pad. the amount of companies that sell the same stuff cheaper under a non brand label.Even Monroe gas shocks sold as Boge gas shocks.
Mobil Delvac automatic transmission fluid is TES-295 certified and same as transynd....not exact formulation, but standard. This is what I use in my truck, but dexron vi isn't a bad fluid either to use.. The regular Mobil 1 tranny fluid is no good for Allison's....
Spahi77 Mobile Delvac 1 ATF is indeed TES295 certified. It says right on the container. Also has the Allison Approved symbol. It is the same fluid as Transynd.
How many quarts did you fill in. Recently did my pan and filter. 8qts came out. Replaced it with 8qts and can not get a reading on the dipstick hash marks 2015 gmc 2500hd 6spd
derek m 7.4 service refill is what it says and capacity is 12.7 according to the book. Ended up putting in about 9.5qts and finally got the fluid in between the cold hash marks at 120-130 on the temp gauge.
Carlos Gonzalez I just bought an 07 LBZ is the reason I was asking. It has 216k on it and have kicked around replacing fluid since I’m not sure when he changed it last
