How to Change Your Duramax Transmission Fluid 01’-19’ (LB7) | DIY Diesel

[@bounderchris]

Here for the socket size and didn’t think you were gonna say it and then you said 15mm and I was like yes!

[@butchortner6572]

Always check your transmission fluid warm with the engine running vehicle on level ground. It should read over full cold with the engine off.

[@frosty0219]

Would like to add that it’s a good idea to cycle through the gears before hitting the road to ensure that the fluid reaches everything, great video 👍🏽👍🏽

[@GMCJay_lly]

Commenting for support! Keep 'em coming!

[@DIYDiesel]

Thanks! Will do brother 🤘

[@ronaldbabbitt6318]

Oh yeah Brother D! Excellent Transmission and spin filter replacement Video! Frigin Great info 👍 🛠💨⚒️🤘🏻🏁

[@DIYDiesel]

Thanks man! 🤘

[@josephdemarco1469]

hey! I just bought an LB7 and im subscribed and follow on IG. Im prepared to be a DIY guy with my new truck but never having done a tranny fluid change having you jump back and forth between differences of cold and hot tranny changes was confusing. For things that have multiple options, if you could pick and explain one method that would make it super easy for dummies like me who are figuring it out on the go. I enjoy your videos, Ive been watching them for a few days now.

[@DIYDiesel]

I’m open to messages on IG feel free to message me with questions anytime! Appreciate the support 🤘 lots of lb7 stuff coming once I get the lbz rockers finished 👍

[@Dmaxstore]

Here is the Transmission Fluid Checking Procedure Cold Fluid Check: The purpose of the cold check is to determine if the transmission has enough fluid to be operated safely until a hot check can be made. 1. Bring the vehicle to a complete stop on a level surface using the service brakes. IMPORTANT: The fluid level rises as fluid temperature increases. DO NOT fill above the COLD CHECK band if the transmission fluid is below normal operating temperatures. 2. Ensure that the engine is at low idle RPM (500-800 RPM). 3. With the service brakes applied, put the transmission in the P, PARK, position. 4. Engage the park pawl by slowly releasing the service brakes. The vehicle may move slightly as the pawl engages. 5. Apply the parking brake and ensure it is properly engaged. 6. Run the engine for at least one minute. Apply the service brakes and shift to D, DRIVE, then to N, NEUTRAL, and then shift to R, REVERSE, in order to fill the hydraulic system. 7. Ensure that the engine is at low idle RPM (500-800 RPM). 8. With the service brakes applied, put the transmission in the P, PARK, position. 9. Engage the park pawl by slowly releasing the service brakes. The vehicle may move slightly as the pawl engages. 10. With the engine running, remove the fluid level indicator from the fill tube and wipe the indicator clean. 11. Insert the fluid level indicator into the fill tube and remove. Check the fluid level reading. Repeat the check procedure to verify the reading. IMPORTANT: If the fluid level is within the COLD CHECK band, the transmission may be operated until the fluid is hot enough to perform a HOT RUN check. If the fluid level is not within the COLD CHECK band, add or drain as necessary to bring it to the middle of the COLD CHECK band. Always check the fluid level at least twice using the procedure described above. Consistent readings are important in order to maintaining proper fluid level. If inconsistent readings persist, inspect the transmission vent assembly to be sure that it is clean and unclogged. If readings are still inconsistent, contact your nearest Allison distribution or dealer. Perform a hot check at the first opportunity after the normal operating sump temperature of 71-93°C (160-200°F) is reached. Hot Fluid Check: 1. Operate the transmission in D, DRIVE, range until normal operating temperature is reached. Normal operating temperature is any of the following: IMPORTANT: The fluid must be hot to ensure an accurate check. The fluid level rises as temperature increases. Sump temperature 71-93°C (160-200°F). Converter-out temperature 82-104°C (180-220°F). If a transmission temperature gage is not present, check the fluid level when the engine water temperature gage has stabilized and the transmission has been operated under load for at least one hour. 2. Bring the vehicle to a complete stop on a level surface using the service brake. 3. Ensure that the engine is at low idle RPM, 500-800 RPM. 4. With the service brakes applied, place the transmission in the P, PARK, position. 5. Engage the park pawl by slowly releasing the service brakes. The vehicle may move slightly as the pawl engages. 6. Apply the parking brake and ensure it is properly engaged. 7. With the engine running, remove the fluid level indicator from the fill tube and wipe the indicator clean. 8. Insert the fluid level indicator into fill the tube and remove. Check fluid level reading. Repeat the check procedure to verify the reading. IMPORTANT: Always check the fluid level at least twice using the procedure described above. Consistent readings are important to maintaining proper fluid level. If inconsistent readings persist, inspect the transmission vent assembly to be sure it is clean and unclogged. If readings are still inconsistent, contact your nearest Allison distribution or dealer. 9. If the fluid level is not within the HOT RUN band, add or drain as necessary to bring the fluid level to within the HOT RUN band. IMPORTANT: Safe operating level is within the HOT RUN band on the fluid level indicator. The width of the HOT RUN band represents approximately 1.0 liter (1.06 quarts) of fluid at normal operating sump temperature.

[@josephdemarco1469]

@@Dmaxstore Thank you. Ill copy and past that into a document for when I decide to do it myself. I wish I was in America so I could shop from your store, being in Canada is a bloody curse, especially trying to get reasonably priced parts for an LB7

[@deeeeeeps]

Great audio. Clear all around.

[@Dmaxstore]

Awesome Video! Thanks for giving our filter a shot, I am sure you'll be happy with it.

[@DIYDiesel]

I know I will 🤘

[@hansbarak]

Thanks for putting out this video. I got 2018 DMax LP5 6 speed. Got the same fluid and filter like you did but would be doing this for 1st time ever. My will also take 7.4 quarts. Do you mind sharing how much I should have left in 2nd jug to ensure I don’t overfill? Thanks

[@DIYDiesel]

A little over half a quart to be honest I’m not sure what the exact math would be on it. There are 4 quarts to the gal. I appreciate the compliment and support! Jealous of that l5p 🤘🏼

[@hansbarak]

@@DIYDiesel got it ok thanks

[@hansbarak]

@@DIYDiesel another question- did you follow manual instructions where it talks about shifting gears from Park to Drive to Neutral, reverse and back to park… thing is confusing but seems doable lol. Any feedback regarding those steps or follow your steps?

[@hansbarak]

Hey bud just did the fluid and landed with little less than a full quart left. Must be just little over 7 quarts in there of new oil. Checked hot band and it seemed to be near lower end of hot band mark. Any thoughts on where I landed or don’t have enough in there based on recommended 7.4 qts. Thanks!

[@DIYDiesel]

@@hansbarak so I would re check it according to how DMAXStore commented below on the exact procedures to check it. You may need a little more dip sticks don’t take much to get to the line you want

[@whitepowder8838]

Love the vids

[@DIYDiesel]

Appreciate the support 🤘

[@newspaperlightbulb]

drain plug and an external filter. what a concept. wish the transmission on my damn dodge was designed like this. instead i have to drop the entire oil pan out with up to 10 quarts of fluid still in it just to get to the filters.

[@rokitman5753]

Pump it out leave the pan alone

[@gordonfjeld9081]

I didn't see anywhere that you dropped the trans oil pan and replaced the internal filter. The trans fluid looked a little burnt as you stated and in that case the internal filter should be replaced. If you where working it hard enough to burn the fluid it would be a good idea to replace the pan and the internal filter with the Deep versions of both.

[@killerrf]

Internal filter from what allison states is a very course filter… catches chunks more so… the spin on filter does the fine filtering. Internal is only suppose to be changed while rebuild.

[@chadpm11]

Forgot to add never put your finger into the filter to take the plastic off, we see many Allison's using aftermarket filters that had plastic that someone did this a piece went into the valvebody aka control module and caused them to burn up and we either have to rebuild them or replace depending on the damage

[@homervences5216]

At how many miles should the transmission fluid be changed at ?

[@philborchelt5396]

How do you dispose of the transmission fluid?

[@DIYDiesel]

I take it to my local county landfill they have a fluid thing there

[@coatesfactor]

Check fluid level engine running in park, says right on the dipstick

[@griffenfranklin8576]

My truck has been shifting harder then usual would this help?

[@vincentjohnson9126]

Thank you 🙏

[@michaelschroeder9316]

Reason why it read "HIGH" when you pulled it out cold, you are to run the engine for 1 minute, place in Drive, N, R, then Park. then while engine still running check cold. Should read in the COLD range then. Same thing happened to me. After doing above, it was in the COLD range.

[@claud1542]

says it in the manual to do this

[@CraigFreeman-i7g]

Could have been a 4 minute video

[@wigit2216]

Then watch another video. There is one that is 2 minutes long if you have the attention span of a fish

[@vince99frc]

Thanks for saving me $200 from Jiffy Lube.

[@AbelMolina-q3y]

Best oil filter is a pure power filter check it out

[@ericmartinez5633]

pretty vague on how to check fluid level. you check allison when they are hot. at least 160degrees while in drive with ebrake on and tires chaulked.

[@DIYDiesel]

Ya I wanted to keep it vague due to not wanting to give miss information. DMAXStore helped me out in the comments here on how to do it 🤘🏼

[@johncheatham6616]

Filter fluid and introduce it to your fuel a gallon per tank

[@DIYDiesel]

That works real well 🤘🏼 I have a massive supply of hot shots so since getting that I use that for my fuel additives.

[@lodwill5116]

Advertisement channel 😮

[@liamlibby8252]

My guy… quit guessing 😂😂

[@chadpm11]

😂😂😂😂😂😂😂😂 this has got to be a joke, or its just sad that someone doesn't know how to check transmission fluids 😂😂😂😂😂