Other Name: SENSOR, Coolant Temperature (Engine Unit)
Replaces: 25037062, 12191170, 15326388, 15369305
Warranty: This genuine part is guaranteed by GM's
factory warranty.
Fits the following Vehicles:
2006-2011 Chevrolet HHR | 5 DOOR HIGH ROOF HATCHBACK, 5 DOOR HIGH ROOF HATCHBACK SS, 5 DOOR HIGH ROOF PANEL, 5 DOOR HIGH ROOF PANEL SS, 5 DOOR UPLEVEL HIGH ROOF HATCHBACK, 5 DOOR UPLEVEL HIGH ROOF PANEL | 4 Cyl 2.2L, 4 Cyl 2.2L Flex, 4 Cyl 2.4L
Q: How do you remove the ECT sensor on Chevrolet Cobalt,HHR and Saturn ION?
A: Turn the ignition key to OFF. Drain the cooling system. It's not necessary to fully drain the coolant, but it must be drained to a level that's below the level of the ECT sensor. Disconnect the electrical connector from the ECT sensor, which is located at the right front (passenger's side) corner of the cylinder head on 2.0L supercharged engines, near the valve cover. On 2.2L and 2.4L engines, the sensor is located in the thermostat housing, between the two heater hose pipes. On 2008 and later 2.0L turbocharged engines, the sensor is located at the left rear of the cylinder head (driver's side). You may need to unbolt the under-hood fuse and relay center, moving it aside for access. Unscrew the ECT sensor and remove it. Wrap the threads of the ECT sensor with Teflon tape. Installation is the reverse of removal. Be sure to tighten the ECT sensor to the torque specifications. Refill the cooling system when you're done.
Q: What Is the Function and Troubleshooting Process of the Coolant Temperature Indicator System and Coolant Temperature Sending Unit on Chevrolet Cobalt,HHR,Saturn ION and Pontiac G5?
A: The coolant temperature system includes a dashboard warning light or gauge, and an engine coolant temperature (ECT) sensor. It also works as the coolant temperature-sending unit for the Powertrain Control Module (PCM). If overheating is indicated, check the coolant level and wiring harness connectors. When the ignition is turned to START, the light should come on, showing the bulb works. If it doesn't, the bulb may be burned out, the ignition switch faulty, or the circuit open. When turning on the engine, the light should go off; if not, the engine is overheating. If it stays on, there could be a grounded wire, a defective sending unit, or a faulty ignition switch. Also, check the coolant mix, as high water content may not activate the sending unit.