X350 Chassis Wiring Harness to Fuel Tank Wiring Harness (L8T+N2N)
WARNING: This page is about a different car, the 2023 GMC Sierra 3500 HD and 2023 GMC Sierra 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
 Courtesy of GENERAL MOTORS COMPANY
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 Courtesy of GENERAL MOTORS COMPANY
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Connector Part Information
- Harness Type: Chassis Wiring Harness
- OEM Connector: 33180742
- Service Connector: 19354078
- Description: 8-Way F 2.8 Series, Sealed (L-GY)
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Connector Part Information
- Harness Type: Fuel Tank Wiring Harness
- OEM Connector: Not Available
- Service Connector: Service by Harness - See Part Catalog
- Description: 8-Way M (L-GY)
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Terminal Part Information
| Terminal Type ID |
Terminated Lead |
Diagnostic Test Probe |
Terminal Removal Tool |
| I |
Not required |
J-35616-4A (PU) |
No Tool Required |
| II |
Not required |
No Tool Required |
No Tool Required |
| Pin |
Size |
Color |
Circuit |
Terminal Type ID |
Option |
Function |
Pin |
Size |
Color |
Circuit |
Terminal Type ID |
Option |
| 1 |
2.5 |
GY |
120 |
I |
- |
Fuel Pump Control |
1 |
2.5 |
GY |
120 |
II |
- |
| 2 |
2.5 |
YE/GY |
4137 |
I |
- |
Fuel Pump Supply Voltage Phase 2 |
2 |
2.5 |
YE/GY |
4137 |
II |
- |
| 3 |
2.5 |
WH/BN |
4138 |
I |
- |
Fuel Pump Supply Voltage Phase 3 |
3 |
2.5 |
WH/BN |
4138 |
II |
- |
| 4 |
0.5 |
BN |
7444 |
I |
- |
Fuel Pump Assembly Shield Ground |
4 |
0.5 |
BN |
7444 |
II |
- |
| 5 |
0.5 |
BU/VT |
1589 |
I |
- |
Primary Fuel Level Sensor Signal |
5 |
0.5 |
BU/VT |
1589 |
II |
- |
| 6 |
0.5 |
BK/GN |
6281 |
I |
- |
Fuel Level Sensor Low Reference |
6 |
0.5 |
BK/GN |
6281 |
II |
- |
| 7 - 8 |
- |
- |
- |
- |
- |
Not Occupied |
7 - 8 |
- |
- |
- |
- |
- |