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.
2020 GMC Acadia SLFACTORY OEM SERVICE PROCEDURE
Section 248 (Engine Controls And Fuel - 2.0L (LSY) - Description And Operation)
WARNING: This page is about a different car, the 2021 GMC Acadia. However, it is still accessible from the selected car via links, so may be relevant.
- Description and Operation
- Camshaft Actuator System Description
- Catalytic Converter Description and Operation
- Compressor Air Intake Turbocharger System Description
- Electronic Ignition System Description
- Engine Control Module Description
- Evaporative Emission Control System Description
- Fuel System Description
- Fuel System Overview
- Electronic Returnless Fuel System
- Fuel Pump Power Control Module
- Fuel Pressure Sensor
- Fuel Tank
- Fuel Fill Pipe
- Fuel Tank Fuel Pump Module
- Primary Fuel Tank Fuel Pump Module
- Secondary Fuel Tank Fuel Pump Module
- Fuel Level Sensor
- Fuel Pump
- Fuel Filter
- Pressure Relief Regulator Valve
- Primary and Secondary Jet Pumps
- Nylon Fuel Pipes
- Quick-Connect Fittings
- High Pressure Fuel Pump
- Fuel Rail Assembly
- Fuel Rail Pressure/Temperature Sensor
- Fuel Injectors
- Fuel Metering Modes of Operation
- Starting Mode
- Clear Flood Mode
- Run Mode
- Acceleration Mode
- Deceleration Mode
- Battery Voltage Correction Mode
- Fuel Cutoff Mode
- Fuel Trim
- Heated Oxygen Sensor Description and Operation
- Throttle Actuator Control (TAC) System Description
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.
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