K56 Serial Data Gateway Module X1
WARNING: This page is about a different car, the 2021 GMC Sierra 3500 HD and 2021 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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Connector Part Information
- Harness Type:Instrument Panel
- OEM Connector: 35077574
- Service Connector: 13519319
- Description: 30 -Way F 0.5 MQS Series(BK with GY Terminal Position Assurance)
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Terminal Part Information
| Terminal Type ID |
Terminated Lead |
Diagnostic Test Probe |
Terminal Removal Tool |
| I |
19370262 |
EL-35616-58 (BK) |
EL-38125-58 |
| Pin |
Size |
Color |
Circuit |
Function |
Terminal Type ID |
Option |
| 1 |
0.35 |
RD / VT |
3340 |
Battery Positive Voltage |
I |
- |
| 2 - 3 |
- |
- |
- |
Not Occupied |
- |
- |
| 4 |
0.35 |
BU / GY |
3935 |
High Speed GMLAN Serial Data [+] 8 |
I |
- |
| 5 |
0.35 |
WH / GY |
3936 |
High Speed GMLAN Serial Data [-] 8 |
I |
- |
| 6 |
- |
- |
- |
Not Occupied |
- |
- |
| 7 |
0.35 |
BK / WH |
1851 |
Signal Ground |
I |
- |
| 8 |
0.35 |
BU / GN |
1304 |
High Speed GMLAN Serial Data [+] 9 |
I |
- |
| 9 |
0.35 |
WH / GN |
1305 |
High Speed GMLAN Serial Data [-] 9 |
I |
- |
| 10 - 12 |
- |
- |
- |
Not Occupied |
- |
- |
| 13 |
0.35 |
BU / WH |
2089 |
High Speed GMLAN Serial Data [+] 13 |
I |
- |
| 14 |
0.35 |
WH |
2090 |
High Speed GMLAN Serial Data [-] 13 |
I |
- |
| 15 |
0.35 |
BU / BK |
1978 |
High Speed GMLAN Serial Data [+] 11 |
I |
- |
| 16 |
0.35 |
WH |
1979 |
High Speed GMLAN Serial Data [-] 11 |
I |
- |
| 17 |
0.35 |
BU / BN |
1980 |
High Speed GMLAN Serial Data [+] 12 |
I |
- |
| 18 |
0.35 |
WH |
1981 |
High Speed GMLAN Serial Data [-] 12 |
I |
- |
| 19 |
- |
- |
- |
Not Occupied |
- |
- |
| 20 |
0.35 |
GN |
5060 |
Low Speed GMLAN Serial Data |
I |
- |
| 21 - 25 |
- |
- |
- |
Not Occupied |
- |
- |
| 26 |
0.35 |
GN / WH |
2100 |
Low Speed GMLAN Serial Data 3 |
I |
- |
| 27 - 29 |
- |
- |
- |
Not Occupied |
- |
- |
| 30 |
0.35 |
GY / GN |
1102 |
Low Speed GMLAN Serial Data 2 |
I |
- |