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Home >> Chevrolet >> 2022 >> Tahoe PPV, RWD >> Repair and Diagnosis >> Electrical >> Motors, Switches, Relays >> Electrical Center Identification Views (X50B - X51AX) >> Electrical Center Identification Views >> X50A Engine Wiring Harness Junction Block X4

X50A Engine Wiring Harness Junction Block X4

GM4993031Courtesy of GENERAL MOTORS COMPANY
Connector Part Information
  • Harness Type: Chassis Wiring Harness
  • OEM Connector: 33384574
  • Service Connector: 19371188
  • Description: 44-Way F 1.5, 2.8, 6.3 CTS, 9.5 MCON-LL Series (BK)
Terminal Part Information

Terminal Type ID Terminated Lead Diagnostic Test Probe Terminal Removal Tool
I 19369711 J-35616-14 (GN) EL-38125-560A
II 84764078 J-35616-42 (RD) J-38125-215A
III 84764079 J-35616-22 (RD) J-38125-11A
IV 84779405 J-35616-35 (VT) J-38125-215A
Pin Size Color Circuit Function Terminal Type ID Option
A1 - A2 - - - Not Occupied - -
A3 1 GY / BN 2109 Trailer Park Lamp Control IV -
A4 - A5 - - - Not Occupied - -
A6 1
0.75
VT / BK
VT / BK
339
339
Run/Crank Ignition 1 Voltage
Run/Crank Ignition 1 Voltage
IV
IV
MBR+UET
UET-MBR
B1 - - - Not Occupied - -
B2 0.75 WH / GN 1624 Trailer Backup Lamp Control IV -
B3 0.75 RD / GN 2440 Battery Positive Voltage IV -
B4 - B6 - - - Not Occupied - -
C1 0.75 RD / BN 2940 Battery Positive Voltage I -
C2 - C6 - - - Not Occupied - -
C7 0.5 RD / WH 2040 Battery Positive Voltage I -
C8 3 BN / YE 2996 Fuel Heater Control 1 II -
D1 - - - Not Occupied - -
D2 6 RD / VT 1242 Battery Positive Voltage III -
E1 - E2 - - - Not Occupied - -
F1 3 RD / BU 7640 Battery Positive Voltage II -
F2 - G2 - - - Not Occupied - -
G3 0.75 YE / GY 1618 Left Rear Trailer Stop/Turn Lamp Control IV -
G4 2 RD / YE 5840 Battery Positive Voltage IV -
G5 2.5 BU 3921 Diesel Exhaust Fluid Heater Control 1 IV -
G6 2.5 RD / YE 1142 Battery Positive Voltage IV -
H1 - H2 - - - Not Occupied - -
H3 0.75 GN / VT 1619 Right Rear Trailer Stop/Turn Lamp Control IV -
H4 3 RD / VT 5640 Battery Positive Voltage IV -
H5 2.5 RD / VT 1940 Battery Positive Voltage IV -
H6 4
2.5
RD / GN
RD / GN
742
742
Battery Positive Voltage
Battery Positive Voltage
IV
IV
(-UET/MBR)+Z82
MBR+UET+Z82