Question about 2002 Chevrolet Trailblazer Ext

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Replace 2002 trailblazer cooling fan clutch - 2002 Chevrolet Trailblazer Ext

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

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

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Posted on Jan 02, 2017

  • 67 Answers

SOURCE: HOW TO REPLACE BEARING IN MY AC CLUTCH OR RELPACE ....2002 TRAILB

belt tensioner just unscrew

Posted on Apr 13, 2009

  • 14036 Answers

SOURCE: my trailblazer (2002) was making allot of noise as i gave it gas.

YOUR FAN CLUTCH IS A ELECTRO VISCOUS PCM CONTROLLED FAN CLUTCH.SOUND LIKE THE FAN CLUTCH IS BAD.IT SHOULD HAVE LESS RESISTANCE WITH COLD ENGINE.AND HOT ENGINE THERE SHOULD BE INCREASE IN RESISTANCE.IF NOT FAN CLUTCH HAS FAILED.REPLACE IT.

Posted on Aug 13, 2009

ginko
  • 19396 Answers

SOURCE: where is the cooling fan

Hi.
The cooling fan speed sensor is built in inside the fan clutch.
If you have a code p1481 or similar , pointing at the cooling fan speed sensor, often you have to fix or replace the wiring , rather that the sensor.
Check that wiring has continuity, the wire to sensor must have +5V. Here an interesting website on trailblazer fan system.
Regards.

Posted on Oct 03, 2009

  • 10 Answers

SOURCE: serpentine belt replacement on 2002 trailblazer 4.2 l engine

Just replaced the water pump on my 2004 trailblazer the other day, removed the fan to get the water pump out. You do not have to remove the fan just to change the belt.

Posted on Jan 28, 2010

Molson02536
  • 3854 Answers

SOURCE: i replace the fan clutch and i still have the code

TSB#05-06-02-012B: Service Engine Soon (SES) or Check Engine Light On, DTC P0480, P0526/P1481/P1484 Set (Replace Engine Cooling Fan Wiring Harness) - (Oct 19, 2006)
Subject:
Service Engine Soon (SES) or Check Engine Light On,
DTC P0480/P0526/P1481/P1484 Set (Replace Engine Cooling Fan Wiring Harness)
Condition
Some customers may comment that the Service Engine Soon (SES) or Check Engine light is illuminated. This condition may be intermittent and upon investigation, the technician may find either DTC P0480, P0526, P1481 or P1484 set.

Cause
This condition may be caused by the cooling fan harness chaffing against the plastic guide it routes through. This
contact may damage the insulation of the wires enclosed in that harness.

Correction
Replace the engine cooling fan harness using the procedure listed below.

1. Remove the cooling fan. Refer to the Cooling Fan and Shroud Replacement procedure in the Engine Cooling sub-section of SI.

2. Place the cooling fan assembly on a bench.
Disconnect the harness electrical connector from the cooling fan clutch.

3. Remove the harness from the plastic guide while feeding the wires out of the slot.

4. Before installing the new harness, wrap the affected area on the wires with electrical tape to keep the protective sleeve in place. Be sure to keep the tape approximately 25 mm (1 in) away from the connector so the wires can be fed into the slot.

5. Feed the wires into the slot and install the harness to the plastic guide.

6. Connect the harness electrical connector to the cooling fan clutch.

7. Install the cooling fan. Refer to the Cooling Fan and Shroud Replacement procedure in the Engine Cooling sub-section of SI.

Part Number 89024920

Description
Harness Assembly, Engine Cooling Fan Wiring
Thank you for using fixya.

Posted on Apr 29, 2010

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1 Answer

Changed cooling fan clutch, engine still roars


If you have the electronic clutch, have you tried running it unplugged ?
Its possible something is engaging the clutch when it is not needed.

Feb 12, 2013 | 2002 Chevrolet TrailBlazer

1 Answer

2002 trailblazer 4wheel - scan code p1484/p1481. Spent days researching these 2 codes on many web sites and forums> cooling fan speed signal lost only sometimes mostly in city not freeway. The car is...


Sounds like the fan clutch is going bad, these had a reputation for failing. The fan clutch is controlled by the computer and if the fan speed does not match what the computer has set, an error code is set. A fan clutch costs in the area of $120 - $200, and the labor to replace it is probably another equal amount.

Jul 07, 2011 | 2004 Chevrolet TrailBlazer

1 Answer

The fan clutch 2002 trailblazer of all time is activated and buzzes as if the engine is cold


If the fan clutch is activated or engaged all the time, it will sound like a big rig during normal driving, pretty loud. Replace the fan clutch, it's a common problem with TB's.

Dec 24, 2010 | 2002 Chevrolet TrailBlazer

1 Answer

Cooling fan sensor is sending a message to the reader board I have plugged it in to the diagnostic machine and tells me code 1484


It's very likely that the fan clutch is going bad, this is common problem on Trailblazers. This is a electrically operated clutch and a relatively expensive repair item.

Sep 07, 2010 | 2002 Chevrolet TrailBlazer

1 Answer

I replace the fan clutch and i still have the code p1481 what does that mean? 2002 chevrolet Trailblazer 4.2 Thanks You! Arthur Tyler


TSB#05-06-02-012B: Service Engine Soon (SES) or Check Engine Light On, DTC P0480, P0526/P1481/P1484 Set (Replace Engine Cooling Fan Wiring Harness) - (Oct 19, 2006)
Subject:
Service Engine Soon (SES) or Check Engine Light On,
DTC P0480/P0526/P1481/P1484 Set (Replace Engine Cooling Fan Wiring Harness)
Condition
Some customers may comment that the Service Engine Soon (SES) or Check Engine light is illuminated. This condition may be intermittent and upon investigation, the technician may find either DTC P0480, P0526, P1481 or P1484 set.

Cause
This condition may be caused by the cooling fan harness chaffing against the plastic guide it routes through. This
contact may damage the insulation of the wires enclosed in that harness.

Correction
Replace the engine cooling fan harness using the procedure listed below.

1. Remove the cooling fan. Refer to the Cooling Fan and Shroud Replacement procedure in the Engine Cooling sub-section of SI.

2. Place the cooling fan assembly on a bench.
Disconnect the harness electrical connector from the cooling fan clutch.

3. Remove the harness from the plastic guide while feeding the wires out of the slot.

4. Before installing the new harness, wrap the affected area on the wires with electrical tape to keep the protective sleeve in place. Be sure to keep the tape approximately 25 mm (1 in) away from the connector so the wires can be fed into the slot.

5. Feed the wires into the slot and install the harness to the plastic guide.

6. Connect the harness electrical connector to the cooling fan clutch.

7. Install the cooling fan. Refer to the Cooling Fan and Shroud Replacement procedure in the Engine Cooling sub-section of SI.

Part Number 89024920

Description
Harness Assembly, Engine Cooling Fan Wiring
Thank you for using fixya.

Apr 29, 2010 | 2003 Chevrolet TrailBlazer

2 Answers

Code 1481 and1271


your code P1481 is for the cooling fan speed the problem is often the wires and connector that go to that unit ... removing and replugging the connector sometimes fixes it ... also check the fan clutch and fan (not as often the trouble) .. there is a techniical bulliten out for this trouble .. (tsb050605012) .. sometimes the wire harness is replaced for the fan ...

your trouble code p1271 is associated with the accelerator pedal position sensor (APP) (right above the gas pedal) .. again check the wiring and connector going to the APP .. if the APP turns out to be bad then its not hard to change and requires no computer changes ... when you get an APP alarm then your car may go into a "reduced speed mode" ...
here is a list of the service bullitins on your trailblazer....

http://www.carcomplaints.com/Chevrolet/Trailblazer/2002/tsbs.shtml

Apr 15, 2010 | 2002 Chevrolet TrailBlazer

1 Answer

I have a 2002 4.2Lt Trailblazer with a problem and the scanner showed a code of P1484. What part of the chevy is damage or should be replace.Thx.


The fan clutch could be the problem. It could be locked up, that would cause a roar noise or it could be free wheeling, meaning no cooling of the radiator.

Nov 01, 2009 | 2002 Chevrolet TrailBlazer

1 Answer

Where is the cooling fan speed sensor on my 2002 trailblazer?


Hi.
The cooling fan speed sensor is built in inside the fan clutch.
If you have a code p1481 or similar , pointing at the cooling fan speed sensor, often you have to fix or replace the wiring , rather that the sensor.
Check that wiring has continuity, the wire to sensor must have +5V. Here an interesting website on trailblazer fan system.
Regards.

Oct 03, 2009 | Chevrolet TrailBlazer Cars & Trucks

1 Answer

2002 chevy trailblazer... obd11 says P1484 emissions control? What part is it that i need to replace???


Cooling fan RPM signal malfunction. Poor electrical connection - check for rubbed through wire at clutch. Failed fan clutch assembly

Sep 19, 2009 | 2002 Chevrolet TrailBlazer

2 Answers

My trailblazer (2002) was making allot of noise as i gave it gas.


should have the coolant temp sensor replace from the sound of it. if bad it will think it is cold and dump more gas to keep it running. it also runs the fans

Aug 13, 2009 | 2003 Chevrolet TrailBlazer

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