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TCI 4L60E automatic transmission

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Old Mar 2, 2023 | 07:50 PM
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Default TCI 4L60E automatic transmission

Do TCI 4L60E automatic transmissions have an ( overfill valve release mechanism ) to release the extra transmission fluid if too much transmission fluid was added?
If so, can you show a Pic? Thanks!
Old Mar 2, 2023 | 09:28 PM
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No, you will have to pull the pan or drain plug and drain some out if it's over full.
Old Mar 2, 2023 | 09:37 PM
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Something like this comes in handy
Amazon.com: Vila Manual Siphon Pump Kit, Heavy-Duty, Hand Pumping Pipe, Fast Acting 15" Siphon Tube, Quick and Easy to Set-Up, Variety of Uses from Automotive, Rain Barrels to Water Gardens : Automotive Amazon.com: Vila Manual Siphon Pump Kit, Heavy-Duty, Hand Pumping Pipe, Fast Acting 15" Siphon Tube, Quick and Easy to Set-Up, Variety of Uses from Automotive, Rain Barrels to Water Gardens : Automotive
Put it down the dipstick tube should work.
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Old Mar 3, 2023 | 09:16 AM
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Suction gun is great , if you don't want to wait for one put your big drain pan under the trans , loosen the pan bolts on one side three turns and the other side 1 turn and let it drain out a minute , re tighten pan , wipe off and recheck fluid
Old Mar 3, 2023 | 10:27 AM
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I just noticed some transmission fluid drops on my 4L60E transmission oil pan. Is this the most common place for fluid leaks on this transmission?
Old Mar 3, 2023 | 02:06 PM
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if it's over full get it to the correct level first and then evaluate the oil leaks
Old Mar 4, 2023 | 09:57 AM
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Originally Posted by Eric P
if it's over full get it to the correct level first and then evaluate the oil leaks

I have a small transmission fluid leak. If I bring the transmission fluid level back to the normal level, will the transmission fluid leak stop?
Old Mar 4, 2023 | 10:25 AM
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When you’re over full you are submerging the dip stick o-ring , selector shaft seal and electrical connector which are items not normally submerged which might induce leaks you normally wouldn’t have plus the planetary gears will induce foaming .if it’s just slightly over full that’s different
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Old Mar 4, 2023 | 12:01 PM
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It sure will
Old Mar 5, 2023 | 07:19 AM
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and the dip stick o-ring is not a true o-ring. and dip stick tubes are usually deformed and don't seal well. maybe splurge on a new one and seal it well and make sure top of tube is not flopping around.
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Old Mar 18, 2023 | 06:23 PM
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I bought the hand pump siphon kit as recommend by BlackBlack08 on post #3 and ready to use.
Next Question: Is anyone using Lokar Flexible Transmission DipsticK? Just wondering how accurate they are in Transmission Fluid measurement ???
Old Mar 19, 2023 | 05:09 PM
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I've used Lokar flex trans dip sticks on a number of LS swaps. Both the type that attach to the bell housing bolt and the longer one that attaches to the fire wall with sheet metal screws.
When I use them I put some gasket sealer around the o-ring where it goes in the trans. Never had a leak.
My 98 Wrangler LS6/4L60E has 14 years on it with no issues. See pic its the longer Lokar version.
Old Mar 19, 2023 | 05:10 PM
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Forgot pic.

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