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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 X3

X50A Engine Wiring Harness Junction Block X3

GM4992608Courtesy of GENERAL MOTORS COMPANY
Connector Part Information
  • Harness Type: Engine Wiring Harness
  • OEM Connector: 33384584
  • Service Connector: 19371176
  • Description: 44-Way F 1.5, 2.8, 6.3 CTS, 9.5 MCON-LL Series (GY)
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
V Not required No Tool Required No Tool Required
Pin Size Color Circuit Function Terminal Type ID Option
A1 0.75 VT / GN 439 Run/Crank Ignition 1 Voltage IV -
A2 0.5 VT / BK 2139 Run/Crank Ignition 1 Voltage IV -
A3 - - - Not Occupied - -
A4 0.75 BN / GN 59 A/C Compressor Clutch Control IV -
A5 0.75 RD / VT 7940 Battery Positive Voltage IV -
A6 0.75 GN 8016 Secondary Axle Motor Control IV -
B1 2.5 YE 6 Starter Solenoid Crank Ignition Voltage IV -
B2 0.5 YE / BK 625 Starter Enable Relay Control IV -
B3 0.5 VT / GY 8017 Secondary Axle Motor Relay Control IV -
B4 - B5 - - - Not Occupied - -
B6 2.5 RD / GY 1342 Battery Positive Voltage IV -
C1 0.5 BU 3017 Fuel Heater Relay 1 Control I -
C2 - - - Not Occupied - -
C3 0.75
0.5
BK
BK
6550
6550
Ground
Ground
I
I
L84/L87/LM2
LM2
C4 0.5 WH / GY 459 A/C Compressor Clutch Relay Control I -
C5 0.5 GN / BU 3889 Powertrain Sensor Bus Relay Control I -
C6 1 VT / GN 4320 Powertrain Sensor Bus Enable I -
C7 - - - Not Occupied - -
C8 - BN / YE 2996 Fuel Heater Control 1 V -
D1 - - - Not Occupied - -
D2 5 RD / BU 1842 Battery Positive Voltage III -
E1 5 RD / BU 1542 Battery Positive Voltage III -
E2 5 RD / BN 1742 Battery Positive Voltage III -
F1 2.5 YE / GN 4358 Starter Pinion Solenoid Voltage II -
F2 0.5 YE / VT 4325 Starter Pinion Solenoid Actuator Relay Control I -
F3 0.5 RD / BN 440 Battery Positive Voltage I -
F4 0.5 YE 5991 Powertrain Relay Coil Control I -
F5 0.5 RD / BN 5940 Battery Positive Voltage I -
F6 - - - Not Occupied - -
F7 0.5 VT / BU 5705 Powertrain Main Relay Control I -
F8 - - - Not Occupied - -
G1 0.75 VT / BU 5294 Powertrain Main Relay Fused Supply Voltage 5 IV -
G2 - G4 - - - Not Occupied - -
G5 1 VT / GN 4320 Powertrain Sensor Bus Enable IV -
G6 0.75 VT / BU 5291 Powertrain Main Relay Fused Supply Voltage 2 IV -
H1 2 VT 5290 Powertrain Main Relay Fused Supply Voltage 1 IV -
H2 0.75 VT / BU 5292 Powertrain Main Relay Fused Supply Voltage 3 IV -
H3 0.75 VT / BU 5294 Powertrain Main Relay Fused Supply Voltage 5 IV -
H4 0.75 VT / BU 5293 Powertrain Main Relay Fused Supply Voltage 4 IV -
H5 1 VT / BU 5291 Powertrain Main Relay Fused Supply Voltage 2 IV -
H6 0.75 VT 5290 Powertrain Main Relay Fused Supply Voltage 1 IV -