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2000 Z28 throwing code P1860

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Old May 21, 2016 | 12:06 PM
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Default 2000 Z28 throwing code P1860

Replaced the TCC solenoid as the converter was unlocking at highway speeds. That fixed that problem, but the CE light stays on for that code since then. What are the most likely culprits for this?

Last edited by FlyinOn4Wheels; May 27, 2016 at 01:26 PM.
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Old May 27, 2016 | 01:26 PM
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Bueller?
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Old Jun 3, 2016 | 10:56 AM
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Is this the only part that I should replace? Also, does anyone have the part#?

Also, what about the solenoid starting at step #4 in this guy's thread? Should I replace that as well? If so, cutting wires on the one in there & using butt connectors to install the new one ok?
http://www.fullsizechevy.com/forum/g...-write-up.html
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Old Jun 3, 2016 | 02:03 PM
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your asking for the PWM solenoid for the TCC right? ACDELCO 24227792
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Old Jun 3, 2016 | 03:38 PM
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Originally Posted by Cpt.Derrek
your asking for the PWM solenoid for the TCC right? ACDELCO 24227792
Right, thank you
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Old Jun 15, 2016 | 08:11 AM
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I guess the PWM solenoid the PO put in was defective in some way. I replaced it again & no more P1860.
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