| Connector 1: | Controller Area Network (CAN) Connector (L18 w/JE4, LG4, LG5) | 
| Connector 2: | Data Link Connector (DLC) | 
| Connector 3: | Data Link Resistor (LLY/L18) | 
| Connector 4: | Data Link Resistor 1 (L18 w/JE4, LG4, LG5) | 
| Connector 5: | Data Link Resistor 2 (L18 w/JE4, LG4, LG5) | 
| Connector 6: | Serial Data Gateway (SDG) Module (L18 w/JE4, LG4, LG5) | 
| Connector 7: | Splice Pack SP203 | 
Connector Part Information
  | 
Terminal Part Information
  | 
Pin  | Wire Color  | Circuit No.  | Function  | 
|---|---|---|---|
A  | BK  | 750  | Ground  | 
B  | OG  | 840  | Battery Positive Voltage  | 
C  | YE  | 2361  | SAE J1939 Serial Data Bus+ (Allison® LCT)  | 
D  | D-GN  | 2362  | SAE J1939 Serial Data Bus- (Allison® LCT)  | 
E  | --  | --  | Not Used  | 
F  | TN/BK  | 1921  | SAE J1587 Serial Data Bus+ Primary (LG5)  | 
G  | WH/BK  | 1922  | SAE J1587 Serial Data Bus- Primary (LG5)  | 
H  | YE  | 2655  | Ignition Sensor (Allison® MD)  | 
J  | L-BU  | 553  | Tow/Haul Switch Signal (Allison® MD)  | 
Connector Part Information
  | 
Terminal Part Information
  | 
Pin  | Wire Color  | Circuit No.  | Function  | 
|---|---|---|---|
1  | --  | --  | Not Used  | 
2  | PU  | 1132  | DLC Class 2 Serial Data  | 
3  | --  | --  | Not Used  | 
4  | BK  | 750  | Ground  | 
5  | BK/WH  | 1451  | Ground  | 
6  | TN/WH  | 6105  | High Speed GMLAN Serial Data+  | 
7  | TN/BK  | 1921  | SAE J1587 Serial Data Bus+ Primary  | 
8  | BK/WH  | 1455  | Keyless Entry Program Enable Signal  | 
9-13  | --  | --  | Not Used  | 
14  | TN  | 6106  | High Speed GMLAN Serial Data+  | 
15  | WH/BK  | 1922  | SAE J1587 Serial Data Bus- Primary  | 
16  | OG  | 840  | Battery Positive Voltage  | 
Connector Part Information
  | 
Terminal Part Information
  | 
Pin  | Wire Color  | Circuit No.  | Function  | 
|---|---|---|---|
A  | TN  | 6106  | High Speed GMLAN Serial Data-  | 
B  | TN/WH  | 6105  | High Speed GMLAN Serial Data+  | 
C  | --  | --  | Not Used  | 
Connector Part Information
  | 
Terminal Part Information
  | 
Pin  | Wire Color  | Circuit No.  | Function  | 
|---|---|---|---|
A  | YE  | 2361  | SAE J1939 Serial Data Bus+  | 
B  | D-GN  | 2362  | SAE J1939 Serial Data Bus-  | 
C  | --  | --  | Not Used  | 
Connector Part Information
  | 
Terminal Part Information
  | 
Pin  | Wire Color  | Circuit No.  | Function  | 
|---|---|---|---|
A  | YE  | 2361  | SAE J1939 Serial Data Bus+  | 
B  | D-GN  | 2362  | SAE J1939 Serial Data Bus-  | 
C  | --  | --  | Not Used  | 
Connector Part Information
  | 
Terminal Part Information
  | 
Pin  | Wire Color  | Circuit No.  | Function  | 
|---|---|---|---|
A1  | D-BU  | 2362  | SAE J1939 Serial Data Bus-  | 
A2  | YE  | 2361  | SAE J1939 Serial Data Bus+  | 
A3  | --  | --  | Not Used  | 
A4  | BK/WH  | 1451  | Ground  | 
A5  | --  | --  | Not Used  | 
A6  | OG  | 440  | Battery Positive Voltage  | 
A7  | --  | --  | Not Used  | 
A8  | RD/WH  | 2673  | Serial Data Class 2  | 
B1-B5  | --  | --  | Not Used  | 
B6  | PK  | 1020  | Off/Run/Crank Voltage  | 
B7-B8  | --  | --  | Not Used  | 
Connector Part Information
  | 
Terminal Part Information
  | 
Pin  | Wire Color  | Circuit No.  | Function  | 
|---|---|---|---|
A  | PU  | 1132  | DLC Class 2 Serial Data  | 
B  | D-GN  | 1049  | ECM/PCM/VCM Class 2 Serial Data  | 
C  | RD/WH  | 2673  | Class 2 Serial Data  | 
D  | OG  | 1044  | Radio Class 2 Serial Data  | 
E  | L-BU  | 1122  | ABS/TCS Class 2 Serial Data (JE3)  | 
F  | D-BU  | 1128  | SDM Class 2 Serial Data  | 
G  | GY  | 1036  | IPC Class 2 Serial Data  | 
H  | D-GN/WH  | 1133  | ATC Class 2 Serial Data (w/o LG4/LLY)  | 
J  | --  | --  | Not Used  | 
K  | YE  | 2470  | TCM Class 2 Serial Data (w/o LG4/LLY)  | 
L  | --  | --  | Not Used  | 
M  | D-BU/WH  | 653  | Chime Module Bit 1 Signal  |