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.
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HOMESERVICE MANUALSCHEVROLET2019TAHOE LS, 4WD, GAS/ETHANOLREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 91 (ENGINE CONTROLS/FUEL - 1.8L (LUW LWE) - WIRING SCHEMATIC DIAGRAMS)
2019 Chevrolet Tahoe LS, 4WD, Gas/Ethanol
Section 91 (Engine Controls/Fuel - 1.8L (LUW LWE) - Wiring Schematic Diagrams)
2019 Chevrolet Tahoe LS, 4WD, Gas/EthanolSECTION Section 91 (Engine Controls/Fuel - 1.8L (LUW LWE) - Wiring Schematic Diagrams)
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.
- Schematic Wiring Diagrams
- Engine Control Wiring Schematics
- Module Power, Ground, Serial Data, and MIL
- 5V and Low Reference Bus (1 of 2)
- Low Reference Bus (2 of 2)
- Engine Data Sensors - Humidity, Pressure, and Temperature
- Engine Data Sensors - Oxygen Sensors
- Engine Data Sensors - Throttle and Brake Sensor Controls
- Ignition Controls - Ignition System
- Ignition Controls - Camshaft, Crankshaft, and Knock Sensors, Camshaft Actuators
- Fuel Controls - Fuel Pump and Fuel Pump Controls
- Fuel Controls - Fuel Injectors
- Evaporative Emission, Economy, and Device Controls
- Device Controls - Secondary Air Injection
- Controlled/Monitored Subsystem References
- Engine Control Wiring Schematics
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.