Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET2019TAHOE LS, 4WD, GAS/ETHANOLREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 74 (COMPONENT LOCATIONS - ELECTRICAL CENTER IDENTIFICATION VIEWS)ELECTRICAL CENTER IDENTIFICATION VIEWSX50A FUSE BLOCK - UNDERHOOD X3
2019 Chevrolet Tahoe LS, 4WD, Gas/Ethanol
X50A Fuse Block - Underhood X3
2019 Chevrolet Tahoe LS, 4WD, Gas/EthanolSECTION X50A Fuse Block - Underhood X3
WARNING: This page is about a different car, the 2018 Chevrolet Sonic. However, it is still accessible from the selected car via links, so may be relevant.
Connector Part Information
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Terminal Part Information
| Terminal Type ID | Terminated Lead | Diagnostic Test Probe | Terminal Removal Tool | Service Terminal | Tray Name | Core Crimp | Insulation Crimp |
|---|---|---|---|---|---|---|---|
| I | 13575735 | J-35616-14 (GN) | J-38125-553 | 12191812 | Delphi 19 | C | A |
| II | 13575735 | J-35616-14 (GN) | J-38125-553 | 12191812 | Delphi 19 | E | C |
| III | 13575753 | J-35616-4A (PU) | J-38125-553 | 15304711 | Delphi 8 | 2 | A |
| IV | 13575753 | J-35616-4A (PU) | J-38125-553 | 15304711 | Delphi 8 | E | A |
| V | 13579978 | J-35616-44 (YE) | J-38125-558 | 12065915 | Delphi 5 | A | D |
| VI | 13582223 | J-35616-42 (RD) | J-38125-11A | 12015870 | Delphi 2 | A | D |
| VII | 19367554 | J-35616-44 (YE) | J-38125-558 | 12110127 | Delphi 19 | F | G |
| Pin | Size | Color | Circuit | Function | Terminal Type ID | Option |
|---|---|---|---|---|---|---|
| A1 | - | - | - | Not Occupied | - | - |
| A2 | 1.5 | YE | 6 | Starter Solenoid Crank Ignition Voltage | VI | - |
| A3 - B1 | - | - | - | Not Occupied | - | - |
| B2 | 0.5 | YE | 447 | Starter Relay Coil Control | II | LUW/LWE/LUV |
| B3 | 0.5 | BK | 1750 | Ground | II | LUW/LWE |
| B4 | 0.5 | WH/GY | 459 | A/C Compressor Clutch Relay Control | II | LUW/LWE+C60 |
| B5 | 0.5 | BN/GN | 59 | A/C Compressor Clutch Control | II | LUW+C60 |
| B6 | 1 | VT/BU | 5290 | Powertrain Main Relay Fused Supply 1 | I | - |
| C1 | 0.75 | RD/WH | 140 | Battery Positive Voltage | I | LUW/LWE/LUV |
| C2 | 0.75 | RD/VT | 340 | Battery Positive Voltage | I | MM1 |
| C3 | 0.5 | GN/VT | 335 | Low Speed Cooling Fan Relay Control | II | LUW/LWE |
| C4 | 0.5 | BN/YE | 473 | High Speed Cooling Fan Relay Control | II | LUW/LWE/LUV |
| C5 | 0.5 | VT/BU | 5294 | Powertrain Main Relay Fused Supply 5 | IV | LUV |
| C6 | - | - | - | Not Occupied | - | - |
| D1 | 0.75 | VT/BU | 5290 | Powertrain Main Relay Fused Supply 1 | III | LUW/LWE/LUV |
| D2 | 0.5 | YE | 5991 | Powertrain Relay Coil Control | II | LUW/LWE/LUV |
| D3 | 0.5 | VT/BU | 5291 | Powertrain Main Relay Fused Supply 2 | II | - |
| D4 | 0.5 | VT/BU | 5290 | Powertrain Main Relay Fused Supply 1 | II | - |
| D5 | 0.75 | VT/BU | 5290 | Powertrain Main Relay Fused Supply 1 | III | LUW/LWE/LUV |
| E1 | 1.5 | RD/WH | 2040 | Battery Positive Voltage | V | (MM1)/(LUV+MM3) |
| E2 | 4 | BN/YE | 78 | Secondary Air Injection Pump Control | VII | LWE |
| F1 - F2 | - | - | - | Not Occupied | - | - |
| F3 | 0.5 0.5 |
BN/YE GN/BU |
473 436 |
High Speed Cooling Fan Relay Control Secondary Air Injection Pump Relay Coil Control |
IV II |
LUV LWE |
| F4 | - | - | - | Not Occupied | - | - |
| F5 | 0.5 | VT/BU | 5291 | Powertrain Main Relay Fused Supply 2 | IV | - |
| G1 | 0.5 | BU/BN | 421 | Secondary Air Injection Solenoid Valve Relay Coil Control | II | LWE |
| G2 | 0.5 | BN/WH | 419 | Check Engine Indicator Control | II | LUW/LWE/LUV |
| G3 | 0.5 | GN/GY | 465 | Fuel Pump Primary Relay Control | II | LUW/LWE/LUV |
| G4 | 0.5 | WH/BU | 6311 | Cruise/ETC/TCC Brake Signal | II | - |
| G5 | 0.5 | VT/GY | 139 | Run/Crank Ignition 1 Voltage | II | LUW/LWE |
| G6 - H2 | - | - | - | Not Occupied | - | - |
| H3 | 0.5 | YE/BK | 429 | Secondary Air Injection Solenoid Valve Control | II | LWE |
| H4 | 0.5 | WH | 1310 | EVAP Canister Vent Solenoid Control | II | LUW/LWE |
| H5 | 0.5 | VT/YE | 5985 | Accessory Wakeup Serial Data | II | - |
| H6 | 0.5 | VT/GY | 139 | Run/Crank Ignition 1 Voltage | II | MM1 |
| J1 - J3 | - | - | - | Not Occupied | - | - |
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.