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Electrical issues, where to start?

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Old Aug 23, 2015 | 08:46 PM
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Default Electrical issues, where to start?

Long story short, paid to have my PCM repinned and the guy did a decent job at best. Went from a 98 to a 99-02. I've fixed a few wires already non trans related.

Built 60e

Transmission will not shift electronically at all. Has all gears but first. Converter will lock in 3 and OD. When first is manually applied, it's like car goes up on trans brake. I've swapped both shift solenoids. Can manually command the 2-3 onis with HPT, not the 1-2 though.

Transmission was perfect before the pcm swap which leads me to believe it has to be in the wiring. Anyone got any good ideas of where to start? I can drive the car fine but not having first is gettin old.
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Old Aug 24, 2015 | 06:09 PM
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You'll just have to check the wiring pin and color codes yourself.
This thread might help:
https://ls1tech.com/forums/pcm-diagn...cm-99-pcm.html

I would definitely check the wiring for the 3-2 downshift solenoid.

You'll figure it out - you aren't a fool at all.
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Old Aug 24, 2015 | 09:32 PM
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Originally Posted by mrvedit
You'll just have to check the wiring pin and color codes yourself.
This thread might help:
https://ls1tech.com/forums/pcm-diagn...cm-99-pcm.html

I would definitely check the wiring for the 3-2 downshift solenoid.

You'll figure it out - you aren't a fool at all.
That's the same Pin out he supposedly uses. When he extended the wires, he extended them with all red wire. All I can see is a sea of red. I spoke with someone at Performabuilt earlier and they were confident that setting codes 0751, 0756, and 0757 to report no error would fix the problems. We will see.
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Old Aug 24, 2015 | 10:49 PM
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Bummer about all the red wires.
I have never disabled those codes on either a '98 or 411 PCM, even with 3 different 3600 stalls.
But maybe it will work for you. Right now I think one of the shift solenoid wires is mixed up with the 3-2 downshift solenoid wire.
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