Question about 2003 Chevrolet TrailBlazer

1 Answer

Bad Clutch Fan? Rear ac/heat don't work front only works on 4

2003 Chevy Trailblazer. How can you tell if the clutch fan is bad because I'm able to stop it with my hand. The rear heat/ac don't work and the front only works on speed 3, could this be a resister?

Posted by on

  • 1 more comment 
  • melindasnead May 05, 2010

    Just found out..the fan clutch is not electronically controled..I wanted to add to that the fan doesn't seem to working properly and the engine is getting hot..the gauge isn't reading hot but the engine is unusually hot

  • melindasnead May 13, 2010

    Changed resistor for the AC. Front a/c works but the rear still doesn't work?

  • melindasnead May 14, 2010

    thanks..do you know where the rear blower motor or resistor is located?

×

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 104 Answers

The fan clutch isnt engaged at all times, therefore it may be normal to hold it in place (not recommended). On these trailblazer's 4.2L engine the fan clutch is electronically controlled. Usually when this vehicle's fan clutch malfunctions, there is a random ticking noise while idling or at a stop, also the "service engine soon" may turn on. As for the the fan speed problem, this may be a faulty blower resistor malf (typical) or climate control unit may be faulty. Hopefully this helps!!

Posted on May 05, 2010

Testimonial: "thanks..."

  • islandguy671 May 05, 2010

    I service these vehicles, and they ALL have electronically controlled fan clutch. The only way to see the the electrical wiring is to remove the entire fan clutch (the electrical connector is in front of the fan). The electrical connector is on the top driver side of the radiator, its black and hanging on to the radiator fan shroud.

  • islandguy671 May 14, 2010

    So this issue is much more complex. I'd recommend checking the the following: rear A/C blower motor, rear fan switch, power connector for voltage to the blower motor, and fuses. Surely you'll be able to pinpoint the fault. Hopefully this helps!!

×

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

2003 chevy trailblazer cooling temp running 230


Smart man using a scanner for the actual temp. Assuming you're not losing coolant....2 things I'd look at here, 1st is you may have air in the system, make sure to purge all the air. 2nd is your fan clutch, I've replaced a few fan clutches in my own Trailblazer. Have had them bad right out of the box brand new. Have had bad brand new fan clutches on 2 of my last Trailblazers. You should hear it engaging especially in stop and go traffic.

Aug 02, 2016 | 2003 Chevrolet TrailBlazer

1 Answer

Roaring in the front end of my 2004 Chevy Trailblazer 4x4


A jet engine type of noise from the engine area usually means the fan clutch is going bad. I don't think the tach is related to this, that could be the stepper motor for the tach going bad.

Dec 29, 2012 | 2004 Chevrolet TrailBlazer

1 Answer

2004 Trailblazer Left it runing for 2-3hrs, woke up engine off with ac giving hot air. Way home service engine came on. Codes for bad thermostat or bad heat sensor, but frirnd believed iy migjt be fan...


Suggest changing thermostat and temperature sensor, they are right next to each other and are relatively inexpensive. Whoever does the repair should disconnect the battery during the repair to reset the computer.
The fan clutch will usually not engage fully until the engine is really hot, somewhere around 250+ deg.

Jul 09, 2012 | 2004 Chevrolet TrailBlazer

2 Answers

High pitched whine in engine. Really really bad on acceleration. Alternator??


My 2002 Chevy TrailBlazer sounded like a jet taking off...it was the clutch fan.

Jun 23, 2010 | 2002 Chevrolet TrailBlazer

1 Answer

The fan on my 04 trailblazer wobbles/knocks. Its not the


CHECK TO SEE IF FAN TIGHT TO THE CLUTCH IF YES YOUR FAN CLUTCH IS BAD.REPLACE IT.CANT REPLACE BEARING.

Jan 31, 2010 | 2004 Chevrolet TrailBlazer

3 Answers

Fan cluth or fan assembly


I have a 2004 trailblazer and it keeps over heating at stop lights or while driving slow. I have replaced the thermostat and water pump, but this issue still shows up. It is fine while driving down the highway at 55-65 mph. I have also cleaned the radiator and blew through the fins to clean out the dirt and bugs. Not sure if clutch is operating correctly. How can one tell if it is and are these electric? I know there are approx 5 wires running to the front of the clutch, but not sure if this gets a voltage signal to engage the clutch fan. Any ideas?

Apr 23, 2009 | 2004 Chevrolet TrailBlazer

3 Answers

Trailblazer A/C clutch blows hot !


If it is cycling then its low on freon .. Try to put in one can and this will take care of your problem.. The cycling is due to being low .. The clutch is operated by a pressure switch .. when the clutch kicks in it pressures up but not enough freon will kick it back off and starts over again ... Thanks Jerry

Apr 20, 2009 | 2002 Chevrolet TrailBlazer

2 Answers

2003 Chevy Trailblazer - Rear Heat/AC Controls Don't Work


Sorry, I don't have an answer, but have the same problem. Did you ever figure out what was wrong?

Apr 16, 2009 | 2003 Chevrolet Tahoe

Not finding what you are looking for?
2003 Chevrolet TrailBlazer Logo

918 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

75051 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22095 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

7726 Answers

Are you a Chevrolet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...