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 MANUALSCHEVROLET1999LUMINA V6-3.8L VIN KREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSAIR TEMPERATURE SENSOR ( AMBIENT / INTAKE )SERVICE AND REPAIR
1999 Chevrolet Lumina V6-3.8L VIN K
Air Temperature Sensor ( Ambient / Intake ): Service and Repair
1999 Chevrolet Lumina V6-3.8L VIN KSECTION Service and Repair
Intake Air Temperature Sensor Replacement
The IAT sensor is mounted in the rear air intake duct.
REMOVAL PROCEDURE
CAUTION: Refer to Battery Disconnect Caution in Service Precautions.
1. Disconnect the negative battery cable.
2. Disconnect the IAT sensor electrical connector.
3. Grasp and remove the IAT sensor (3) with a twisting and pulling motion.
INSTALLATION PROCEDURE
1. Position and insert the IAT sensor (3) into the rear air intake duct (2).
2. Connect the IAT sensor electrical connector.
CAUTION: Refer to Battery Disconnect Caution in Service Precautions.
3. Reconnect the negative battery cable.
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.