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02-18-2013, 05:07 PM | #1 |
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Join Date: Nov 2011
Location: Bothell, WA
Posts: 63
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4L60-E Neutral Position Switch Wiring
I have a 2003 Tahoe 4L60-E Trans. There are 10 wires coming off the NSS on this trans.
1. BLK/W to pin C1-32 (PCM) 2. WHT to pin C1-34 (PCM) 3. YEL to pin C1-72 (PCM) 4. GRY to pin C2-62 (PCM) 5. BLK to GRD 6/7. (2) PNK's to Under hood fuse block 8. GRY to pin A11 (Trailer Backup Lamp Supply Voltage - under hood fuse block) 9. LT GRN to pin D3 (Park Neutral Position Switch Park Signal - under hood fuse block) 10. DK GRN to pin F11 (Park/Neutral Start Swicth Signal - under hood fuse block) Trying to build a stand alone harness from this harness and need to know where the last 3 wires would come from? I have the underhood fuse block, but don't know what the source is for those last 3 wires, what do I tie them into? Any help is appreciated. |
02-22-2013, 07:58 PM | #2 |
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Join Date: Apr 2012
Location: Denver, CO
Posts: 232
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Re: 4L60-E Neutral Position Switch Wiring
If I remember correctly these went hot when active. I used #8 through a grounded relay to control my reverse lights and #10 through a grounded relay to break my purple starter wire. On the reverse I just ran a hot to one of the switched sides of the relay and the other all the way back to the reverse light. I did not use #9 but I think it does the same thing as #10.
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