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4L60 Problem....

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Old Jul 31, 2004 | 10:25 PM
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Default 4L60 Problem....
Ok, here's the scoop. Transmission does not engage into gear fully under WOT. I pulled the pan, and much to my expectation, the seal aroung the filter snout was missing a piece. Therefore, the tranny was sucking air. Ok, change the filter and fluid. Runs and shifts great.....for a while. Now, the truck acts like it only has 1st and 3rd. It will try to shift into 4th but won't quite engage fully. Kinda hangs up??? Also when shifting from 1st, I have to let off the gas in order for it to engage 2nd or 3rd (which ever it is actually shifting into). Tranny all stock. Anyone??? Later, FCG
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Old Aug 1, 2004 | 07:58 AM
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Anyone???? TTT!!
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Old Aug 1, 2004 | 08:23 AM
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Originally Posted by FuelCellGuy
Anyone???? TTT!!
Sounds like when the seal broke on the pickup tube it wasn't letting it get tranny fluid (obviously) which is a bad thing. More than likely the tranny is toast. Time for a rebuild... Might as well go stronger too. 4L60E is junk.
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Old Aug 1, 2004 | 08:39 AM
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After the fluid and filter change, it shifted and ran fine for a good while. Could it be tranny is not getting the shift signal from the computer??
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Old Aug 1, 2004 | 05:47 PM
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If you lost 2nd & 4th only, then the 2-4 band is broke or burnt/glazed. If reverse is gone, along with 2nd & 4th, then the sunshell is broke. If this happened all at once then (2nd & 4th) then you broke the 2-4 band. If it happened slowly, then it is burnt/glazed.
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Old Aug 1, 2004 | 09:52 PM
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I guess that means the entire tranny will have to be pulled for this fix???
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Old Aug 1, 2004 | 10:00 PM
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Could it be the 2-4 solenoid?? Maybe not getting a signal??
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Old Aug 2, 2004 | 10:28 AM
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Originally Posted by FuelCellGuy
Could it be the 2-4 solenoid?? Maybe not getting a signal??
Would be very unlikely since it happened after the tranny is abused...
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Old Aug 5, 2004 | 02:09 AM
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its your 2-4 band, same thing happened to me
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Old Aug 20, 2004 | 09:49 PM
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Just for the record....it was the 2-4 band and a valve that was opening when it wasn't supposed to. $839 later, I have a great, firm shifting tranny. Later, FCG
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Old Aug 21, 2004 | 07:49 AM
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Originally Posted by FuelCellGuy
Just for the record....it was the 2-4 band and a valve that was opening when it wasn't supposed to. $839 later, I have a great, firm shifting tranny. Later, FCG

I believe it was the band. That valve issue sounds a little fishy.
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