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 136 (ENGINE CONTROLS AND FUEL - 6.0L (L96) - DESCRIPTION AND OPERATION)
2019 Chevrolet Tahoe LS, 4WD, Gas/Ethanol
Section 136 (Engine Controls And Fuel - 6.0L (L96) - Description And Operation)
2019 Chevrolet Tahoe LS, 4WD, Gas/EthanolSECTION Section 136 (Engine Controls And Fuel - 6.0L (L96) - Description And Operation)
WARNING: This page is about a different car, the 2019 Chevrolet Suburban 3500 HD. However, it is still accessible from the selected car via links, so may be relevant.
- Description and Operation
- Engine Control Module Description
- Throttle Actuator Control (TAC) System Description
- Camshaft Actuator System Description
- Fuel System Description
- Fuel System Overview
- E85 Flex Fuel Description
- Switching Between Gasoline and E85
- Fuel Tanks
- Fuel Fill Pipe
- Fuel Filler Cap
- Fuel Tank Fuel Pump Module Assembly
- Fuel Level Sensor
- Fuel Pump
- Fuel Transfer Pump (w/ dual fuel tanks)
- Pressure Relief Regulator Valve
- Fuel Strainer
- Fuel Filter
- Nylon Fuel Pipes
- Quick-Connect Fittings
- On-Board Refueling Vapor Recovery System (ORVR)
- Fuel Pipe O-Rings
- Fuel Rail Assembly
- Fuel Injectors
- Fuel Metering Modes of Operation
- Fuel Trim
- Evaporative Emission Control System Description
- Electronic Ignition System Description
- Heated Oxygen Sensor Description and Operation
- Catalytic Converter Description and Operation
- Speed Limiting Description
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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.