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Old 12-19-2011, 02:43 PM   #219 (permalink)
abogart's Avatar
Join Date: Mar 2011
Location: Michigan, USA
Posts: 50

EcoCorsica - '96 Chevrolet Corsica Base
90 day: 32.01 mpg (US)
Thanks: 13
Thanked 2 Times in 1 Post
Has anybody been able to successfully implement a TCL switch with the PWM-style tranny yet? I attempted this on the Corsica today. After finally finding a diagram of the pinout connections for the 4T60-E, I cut the Tan/Blk TCC ENABLE wire and ran a switched +12V to it, leaving the Brn TCC PWM wire intact. That did basically nothing except feed voltage into the ECU with the engine off, probably through the PWM wire I'm guessing. Next I snipped the PWM wire, nothing. So I read a little more on this thread (great stuff, BTW) and tried grounding the PWM wire, still no luck. I guess the only thing I can try now is to reverse the polarity and apply voltage to the PWM wire and ground the TCC ENABLE wire. Has anyone figured this out yet?
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