» View Question

Stacy 11/3/2019

2004 Chevrolet Trailblazer LS 6 Cyl 4.20L

Preventive Maintenance

How much does it cost to replace acuator, relay sensor and fan blower?

Heating and cooling does not work

1 Answer


Jimm 11/5/2019

The parts are inexpensive to replace - as compared with the labor cost. Unless you are performing the parts replacement yourself, it is recommended to obtain 2-3 written estimates for the same work from local auto repair shops.

Next question - which specific sensor? There are several associated with the HVAC system; ambient temperature sensor, climate control sun sensor, cabin air temperature sensor.

Try these various on-line parts resources; www.autopartswarehouse.com; www.partsgeek.com; www.rockauto.com - to list only a few.

In fact, they (RockAuto) list the actuator from around $11.00, and the heater blower motor from around $49.00 for your vehicle.

Actuator, main blend door = ULTRA-POWER part #604119 - or it's equivalent
Blower motor = TYC part #700231 - or it's equivalent


Answer this question

( characters left)

Follow Question

what's this?