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Old 06-06-2012, 03:58 PM   #1
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Default Transmission Slipping

Recently I found my transmission slipping a bit in 3rd gear, anything after 2,200 rpm'* was slipping, I dropped the pan and found a tiny bit of grit, but no real metal bits/shavings, there was a bit of goo on the magnet, but ro metal shavings visible in it, the fluid was black/overdue a change, so since I know I have normally taken good care of changing the fluid, I checked the fluid level and it was about 2 quarts high somehow.
So I dropped the pan and changed the filter/fluid, put some lucas additive and Mobil 1 Synthetic transmission fluid in there, the slipping stopped right away and it shifts nicely now.
When I examined the filter I found something, it was larger, but I broke it into pieces trying to see what it was made of.
Any idea what it could have been from?



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Old 06-06-2012, 05:32 PM   #2
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I think William Your Transmission filter was made in Thailand.
Zkids just for laughs though it would be cool to throw you a real curve in there..
A Piece of a boomerang!
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Old 06-06-2012, 06:30 PM   #3
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That looks like a piece of the filter itself.. it should be a sack that goes the length of the filter. See here: https://www.gmforum.com/4t65e-hd-147/rebuilding-4t65e-hd-part-1-reference-material-284788/
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Old 06-06-2012, 08:29 PM   #4
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Quote:
Originally Posted by Soft Ride View Post
I think William Your Transmission filter was made in Thailand.
Zkids just for laughs though it would be cool to throw you a real curve in there..
A Piece of a boomerang!
Ha ha, yeah it was made somewhere strange for sure, it has a good ole AC Delco filter in it now.

Quote:
Originally Posted by ymmot04 View Post
That looks like a piece of the filter itself.. it should be a sack that goes the length of the filter. See here: https://www.gmforum.com/showthread.php?t=284788
Thanks, I am hoping that is all it is, the transmission shifts fine in all gears now, and hopefully it holds out a little longer, I'll give it a full flush as soon as I can afford to get 13 cans of Mobil 1 Synthetic ATF and some lucas additive.
I don't want to have to come up with the money to rebuild it any time soon, I am going to have to save up for that, or learn to rebuild one myself.
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Old 06-15-2012, 05:05 PM   #5
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William, If you are about to flush or even if you are not in the near future, a 1/2 can of Seafoam TransTune will really help to remove sludge & varnish. It is a 3 oil based product and is safe to leave in after a fresh change. I just added a whole can as I think my 4T65E is gummed up and will do the TransGo Shift kit and am going to use DexronVI this time.
http://www.seafoamsales.com/trans-tune.html
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Old 06-15-2012, 09:53 PM   #6
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Quote:
Originally Posted by Soft Ride View Post
William, If you are about to flush or even if you are not in the near future, a 1/2 can of Seafoam TransTune will really help to remove sludge & varnish. It is a 3 oil based product and is safe to leave in after a fresh change. I just added a whole can as I think my 4T65E is gummed up and will do the TransGo Shift kit and am going to use DexronVI this time.
http://www.seafoamsales.com/trans-tune.html
I will keep that in mind for sure, as my shifting problems seemed due to something like maybe a solenoid clogging from thick old fluid.
I use Seafom Motor Treatment on occasion, Seafoam is pretty good stuff!
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Old 06-16-2012, 12:48 AM   #7
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I noticed smoother transmission operation after using the trans tune seafoam.
You should get your codes read by a good scanner.
In my case the P1811 is long adapt shift, and is caused by pressure solenoid (EPC)at valve body. My guess the (EPC) code can be prevented by quickening up the shifts by installing the Shift Kit.
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Will post back after installing tomorrow.
Also beside sticking by varnish etc these solenoids may crack on top housings.
See this video at 2:00 minutes in...
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Old 06-16-2012, 02:06 AM   #8
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I got the P1811 a few years back, that is what made me change the filter and fluid the first time I changed it, the code never came back after changing the fluid.

Will that shift kit work for the 4T60E?
Or is the main problem a sticking armature in the EPC solenoid?
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Old 06-16-2012, 11:47 AM   #9
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4T60E use a LOT of the same parts.... not the PCS obviously, but you can shim the accumulators the same way.
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Old 06-16-2012, 11:59 AM   #10
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Yup agreed. The Transgo kit for the 60E seems to be more valve body related.
From what I understand in the 60E Mike did a write up using the shims in accumulator.
https://www.gmforum.com/performance-137/making-installing-shift-kit-4t60-e-transmission-287906/
The P1811 stems from the EPC solenoid. It senses taking too long time/duration to shifts. Then the computer will increase fluid pressure trying to assist in shifting. That is what then causes the harsh up shifts.
So when the spacers go in it shortens the shift time from accumulator, so that the EPC signal is no longer activated, or no more upshift problems. This is still a band aid to replacing the EPC solenoid which is difficult to replace in the valve body.
What ever works to get smooth shifting back!
I think that the 65e kit including springs may be an exact fit, maybe Dan or Mike would be able to confirm that?
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