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.
2017 Buick Envision BaseFACTORY OEM SERVICE PROCEDURE
Left Rear of Engine Components
Left Rear of Engine Components
| Items |
|---|
| 1: B34 Engine Coolant Temperature Sensor B34 Engine Coolant Temperature Sensor |
| 2: B23F Camshaft Position Sensor - Intake B23F Camshaft Position Sensor - Intake |
| 3: Q38 Throttle Body Q38 Throttle Body |
| 4: B75C Multifunction Intake Air Sensor B75C Multifunction Intake Air Sensor |
| 5: Q12 Evaporative Emission Purge Solenoid Valve Q12 Evaporative Emission Purge Solenoid Valve |
| 6: B74 Manifold Absolute Pressure Sensor B74 Manifold Absolute Pressure Sensor (LCV)B74 Manifold Absolute Pressure Sensor (LTG) |
| 7: G13 Generator G13 Generator X1 |
| 8: M64 Starter Motor M64 Starter Motor |
| 9: B35 Engine Oil Level Switch B35 Engine Oil Level Switch |
| 10: G18 High Pressure Fuel Pump G18 High Pressure Fuel Pump |
Factory Service Tools
Use the Manual With the Right Hardware
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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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