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.
Coolant Temperature Sensor/Switch (For Computer): Locations
2007 Chevrolet Impala V6-3.9LSECTION Locations
Engine Controls Component Views
Beneath the Upper Intake (LZE, LZ4, LZ9)
1 - Fuel Injector 5
2 - Engine Coolant Temperature (ECT) Sensor
3 - Fuel Injector 6
4 - Fuel Injector 4
5 - Fuel Injector 2
6 - Fuel Injector 1
7 - Fuel Injector 3
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.