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2000 4l60e hard 1-2 shift even after valve body replacement
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Jpeters
Novice
Apr 13, 2015, 1:49 PM
Post #1 of 2
(1369 views)
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2000 4l60e hard 1-2 shift even after valve body replacement
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This tranny is actually a 1999 model with the worn valve body tcc bore. I replaced it with one from my 2000 tranny that I know was good. The old valve body had a hard 1-2 shift as well a a late converter lock up. Now the converter locks up just fine but shifts even harder now. I have to mention that I installed a Corvette servo. It was installed when I rebuilt the transmission. I missed the worn valve body at that time. Not sure What kind of shift I will get with these. I am wondering if I still have the pcm thinking my tranny is slipping and do I need to get that code p1870 cleared? My code scanner does not clear trans codes on this old model. Any help would be wonderful.
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gsferraro
Veteran
Apr 13, 2015, 4:00 PM
Post #2 of 2
(1357 views)
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Re: 2000 4l60e hard 1-2 shift even after valve body replacement
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Hello,
This maybe shifting hard for two reasons. One, the corvette servo, this will make it shift hard right off the bat. Two, if there is a 1870 code in the system, the computer will raise line pressure to try to save the trans. If you can get that code cleared. Gary
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