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4l60e trans issue

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Old May 27, 2013 | 06:55 PM
  #1  
wnarunm's Avatar
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From: marion,il
Default 4l60e trans issue

well coming home from carshow today trans started slipping in overdrive,just going in and out. anyone had this issue? its a 98 4l60 out of camaro. but its in 69 camaro now. trans fluid still looked good,and shifts fine 1st 2nd 3rd. someone told me there is a speed sensor on trans didnt know if that might be issue. any help is appreciated
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Old May 28, 2013 | 01:18 PM
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If you have a trans temp gauge, how hot did the transmission get? Heat is killer to a 4L60E, I just had this happen in my 96 WS6 and would like to know too.
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Old May 28, 2013 | 03:52 PM
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Check for codes first. Are you sure it,s 4th and not lock up?
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Old May 28, 2013 | 05:11 PM
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Factory converter?
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Old May 28, 2013 | 06:06 PM
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No mine is a 3200 lock up style and it isn't lock up for sure. My issue feels like the car goes in to neutral when it shifts into 4th. I'm thinking its the 2-4 band but I'm not positive.
Can I bring it to a parts store and have them pull codes? I do not have a CEL on at this time.
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Old May 28, 2013 | 06:10 PM
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I just read OP's question again and yes it could be lock up in his case. These transmissions, 95+, use a PWM (Pulse Width Modulated) converter lock up, which can cause locking and unlocking depending on the driving conditions. Sorry wnarunm I didn't read your post close enough.
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Old May 28, 2013 | 07:26 PM
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Still, you should check for codes first. Some codes that affect converter lockup (like misfire or slippage) don't immediately turn on the MIL light.
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