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.
Fluid Temperature Sensor Replacement
2009 Chevrolet Impala V8-5.3LSECTION Fluid Temperature Sensor Replacement
Fluid Temperature Sensor Replacement
Removal Procedure
1. Remove the case side cover. Refer to Control Valve Body Cover Replacement (Control Valve Body Cover Replacement).
2. Disconnect the wiring harness assembly from the fluid temperature sensor (391).
3. Remove the fluid temperature sensor (391).
Installation Procedure
1. Install the fluid temperature sensor (391).
2. Connect the wiring harness assembly to the with fluid temperature sensor (391).
3. Install the case side cover. Refer to Control Valve Body Cover Replacement (Control Valve Body Cover Replacement).
Important: It is recommended that transmission adaptive pressure (TAP) information be reset. Resetting the TAP values using a scan tool will erase all learned values in all cells. As a result, The ECM, PCM or TCM will need to relearn TAP values. Transmission performance may be affected as new TAP values are learned.
4. Reset the TAP values. Refer to Transmission Adaptive Functions (Transmission Adaptive Functions).
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.