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Transmisson will not shift after conversion

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Old Mar 20, 2007 | 12:35 PM
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Default Transmisson will not shift after conversion

Transmisson will not shift after conversion it acts like it starts in third gear and when rolling can be downshifted to second. Is it possible to have missed hooking power to the trans causing a limp home mode condition?
Does the stock pcm ground the coils only? Is there a fused 12 volt lead for the trans only?
Any help would be awesome.
Thanks
Elec
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Old Mar 20, 2007 | 12:54 PM
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Your missing power to the trans. Hold on a minute I`ll be back with a link.
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Old Mar 20, 2007 | 01:05 PM
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If you used the truck fuse box click here and start reading at post 18 https://ls1tech.com/forums/showthrea...t=truck+wiring

If you wired it in to another fuse box make sure that socket f2 of connector C2 that used to go to the truck fuse box has power. It is the large rectangular black connector that is not sealed.
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Old Mar 20, 2007 | 03:48 PM
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I used a 1999 harness from a camaro would you link still apply?
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Old Mar 20, 2007 | 09:10 PM
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Been there done that. You are definitely missing power to the trans. Had the exact same problem in my Jeep. Once I got that fixed, it shifted the way it should, and then started slipping, but thats another story...
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Old Mar 20, 2007 | 10:16 PM
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can anyone provide me with a 4l60e transmission connector pinout?
Then I could find where I need to add the 12 volts to make this thing drive correct.
Thanks again guys!
Elec
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Old Mar 20, 2007 | 11:10 PM
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This is the closest thing I have to a pinout for the trans connector. You are looking for a pink wire on the trans that should be hot in run and start. When I had this problem I found 2 pink wires, one was for the trans power, and the other was for the TCC lock-up. When you find the pink wire and it has voltage try wedging the brake pedal down with something and check it again, if it no longer has voltage it s the TCC lock up wire and is not the one your looking for.

The power for the trans comes through C 100 pin G.
Attached Thumbnails Transmisson will not shift after conversion-auto-trans-stop-lamp-sw.gif  
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