MrMonte
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- Joined
- Jun 23, 2022
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My 2018 Yukon Denali was due for a trans fluid & filter. It's insane what they charge to do the 10 speed fluid & filter change. I watched a few videos, bought 12qt of AC Delco ULV transmission fluid & filter for $125 and I used 2 8ft pieces of tubing.
Need 3/8" OD tubing to plug into the radiator trans return line. The other tube connects to the trans cooling line you disconnected from the radiator because it will spit some out when the engine starts.
1 - Once tubing is setup I started the engine & let 3qts drain then shut off engine. Trans was already at temp before starting.
2 - Removed oil pan & replaced filter. Cooling lines at trans had to be disconnected for pan to drop.
3 - Installed pan & cooling lines to trans then added 4qts to transmission.
4 - Started engine & let fluid drain as I added more to the transmission until all the old fluid has been removed.
Total time including putting the Yukon on/off 4 jack stands and a tire rotation took 90 minutes.
My trans flush setup.
Need 3/8" OD tubing to plug into the radiator trans return line. The other tube connects to the trans cooling line you disconnected from the radiator because it will spit some out when the engine starts.
1 - Once tubing is setup I started the engine & let 3qts drain then shut off engine. Trans was already at temp before starting.
2 - Removed oil pan & replaced filter. Cooling lines at trans had to be disconnected for pan to drop.
3 - Installed pan & cooling lines to trans then added 4qts to transmission.
4 - Started engine & let fluid drain as I added more to the transmission until all the old fluid has been removed.
Total time including putting the Yukon on/off 4 jack stands and a tire rotation took 90 minutes.
My trans flush setup.
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