- Camaro and Firebird: Why Can't I Shift Out of First?
Guide to diagnose trouble and recommended solutions
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4l60 wont shift out of first
Unplug the trans connector. If the light goes out, The issue is in the trans (Harness or TCC PWM solenoid)
If the light stays lit, The problem is in the harness...short to ground, Pulling the circuit "Low".
If the light doesn't illuminate, Your dealing with an Open Circuit/bad connection/Open TCC PWM solenoid.
However if he did start it metal fragments may have circulated throughout the trans; unless you want to rebuild it or take the risk, I would think twice about using it.
That is my opinion anyway and I always defer to pro builders.
The Best V8 Stories One Small Block at Time
Did you hook the test light to power & see if the circuits are grounded?








