T12 Automatic Transmission Assembly
WARNING: This page is about a different car, the 2023 GMC Savana 3500, 2023 GMC Savana 2500, 2023 Chevrolet Express 3500, and 2023 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
 Courtesy of GENERAL MOTORS COMPANY
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Connector Part Information
- Harness Type: Engine Wiring Harness
- OEM Connector: 13878751
- Service Connector: 19303772
- Description: 16-Way F 1.5 LKS Series, Sealed (BK)
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Terminal Part Information
| Terminal Type ID |
Terminated Lead |
Diagnostic Test Probe |
Terminal Removal Tool |
| I |
13575237 |
J-35616-66 (YE) |
J-38125-28 |
| Pin |
Size |
Color |
Circuit |
Function |
Terminal Type ID |
Option |
| 1 - 2 |
- |
- |
- |
Not Occupied |
- |
- |
| 3 |
0.5 |
WH/GY |
1786 |
Transmission Park/Neutral Signal 1 |
I |
- |
| 4 |
0.5 |
RD/GN |
1840 |
Battery Positive Voltage |
I |
- |
| 5 |
0.75 |
BK/WH |
1551 |
Signal Ground |
I |
- |
| 6 |
0.5 |
WH/BU |
6311 |
Cruise/ETC/TCC Brake Signal |
I |
- |
| 7 |
- |
- |
- |
Not Occupied |
- |
- |
| 8 |
0.5 |
WH |
2501 |
High Speed GMLAN Serial Data [-] 1 |
I |
- |
| 9 |
0.5 |
VT/YE |
5985 |
Accessory Wake-Up Serial Data |
I |
- |
| 10 |
0.5 |
BU |
2500 |
High Speed GMLAN Serial Data [+] 1 |
I |
- |
| 11 |
0.5 |
WH |
2501 |
High Speed GMLAN Serial Data [-] 1 |
I |
- |
| 12 |
0.5 |
VT/BK |
2139 |
Run/Crank Ignition 1 Voltage |
I |
- |
| 13 |
0.5 |
WH |
2501 |
High Speed GMLAN Serial Data [-] 1 |
I |
- |
| 14 |
0.5 |
BU |
2500 |
High Speed GMLAN Serial Data [+] 1 |
I |
- |
| 15 |
0.5 |
BU |
2500 |
High Speed GMLAN Serial Data [+] 1 |
I |
- |
| 16 |
0.5 |
BN/VT |
6399 |
Replicated Transmission Output Speed Signal |
I |
- |