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what is a p1860?

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Old 03-19-2009, 03:20 PM
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Default what is a p1860?
code p1860 does anyone know what it is??
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Old 03-19-2009, 03:22 PM
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Transmission compenent slipping code.
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Old 03-19-2009, 05:09 PM
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so??need a new trans??
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Old 03-19-2009, 09:22 PM
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Did you get the code after the converter install, I think I've heard of a relation between that code and aftermarket converters, but I'm not 100% sure...
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Old 03-20-2009, 04:07 PM
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Sorry this is in my 1999 silvy its a 4.3l with a i guess a 4l60e..
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Old 03-20-2009, 05:15 PM
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That code is
P1860 - TCC PWM Solenoid Circuit Electrical

This means theres and electrical issue open or short in the PWM solenoid or wiring.
I suggest changing the solenoid first.
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Old 03-20-2009, 10:09 PM
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Thanks man will take a look at that soon and let you know what happens.
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Old 03-20-2009, 11:55 PM
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Your welcome
good luck
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Old 08-20-2014, 02:45 PM
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Hi guys,

I have a 1998 suburban that has a p 1860 code. I've changed the solenoid and ignition switch and the code still comes on. The tyranny shop is trying to sell me a new tranny. Any help would be appreciated.

Rick
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Old 08-20-2014, 09:06 PM
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Default p 18th code dilema
Hello

I have a 1998 suburban that has a p 1860 code. I've changed the solenoid and ignition switch and the code still comes on. The tranny shop is trying to sell me a new tranny. Any help would be appreciated.*
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