Question about 2004 GMC Envoy

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Fan and belt pulley on 2002 envoy is loose, is it the water pump! No leaks.

Fan and pulley loose, no water leaks.

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  • GMC Master
  • 9,771 Answers

Yup. It hasn't started leaking yet but it will soon. Get the pump replaced.

Posted on Jul 24, 2016


6 Suggested Answers

  • 2 Answers

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Posted on Jan 02, 2017

  • 2049 Answers

SOURCE: how to change water pump on 2002 gmc envoy

First, copy this diagram down so you will have a guide to putting your serpentine belt back on when you need to...

Follow this link to a "how to" video on replacing your vehicle's water pump. It will take awhile to watch the video(s), but will be well worth it.

Posted on Feb 20, 2010

  • 1 Answer

SOURCE: trying to change water pump 96 gmc yukon. how do i

need to figure out how to remove the fan clutch off 99 yukon water pump to put on new one how?

Posted on Mar 12, 2010

  • 1150 Answers

SOURCE: 2002 GMC envoy slt 4.2

Sounds like you may have disconnected the battery. Does the rough idle only happen when the defroster or A/C is on? If so clean your throttle body with throttle body cleaner with the battery disconnected. When finished, drive it for 5 or so miles with the defroster / AC off to let the computer relearn the settings. This will solve your problem.

Posted on Dec 21, 2010

  • 5370 Answers

SOURCE: The fan on my 2002

For doing that you will require a tool.That tool is called j46406.This tool is used to loose or to tighten the nut. ---------- First read the procedure:---

Remove the fan hub nut from the water pump shaft in a counterclockwise rotation. Using the j46406 tool , in order to secure the water pump pulley, loosen the cooling fan hub nut from the water pump shaft.

Unclip the fan shroud from the radiator at the side panels.

Tilt the radiator and the condenser forward.

Lift the fan and the shroud up and out towards the engine to release the fan from the radiator to clear the radiator inlet.

· Remove the cooling fan and shroud
· Remove the fan clutch from the fan shroud.

· Remove the bolts retaining the fan blade to the fan clutch.

· Separate the fan blade from the fan clutch.

To order the tool to remove the nut,please click on the link below:---


Also click this link directly for more help:---



If you dont have tool then other procedure is as follows:---

There is a clutch hub holding toll that you may need but try this first, use a large hammer to sharply strike the handle of the wrench toward the passenger side of the truck. Two or three sharp hits should loosen the first thread of the hub nut so that you can spin it off the rest of the way by hand. It does help to have the belt installed. Be carefull you don't strike anything else.


This will help.Keep updated.Thanks/.Helpmech.

Posted on Feb 11, 2011

  • 799 Answers

SOURCE: 2002 gmc envoy water pump

Hi, Will need specific info to help. Are you looking to replace the water pump and need instructions? If so, will need to know engine size in your Envoy. Thanks, Mike

Posted on Jun 13, 2011

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Related Questions:

1 Answer

The pulley that the fan is connected to and which the belt goes around is loose and making noise. Is it a bearing?

If the pulley is loose and the bolts are tight, chances are the water pump bearing has failed.

Jan 08, 2013 | 2002 GMC Envoy

1 Answer

The fan on my belt run is loose where it connects to the motor did i lose a bearing...also are all the pulleys on the belt supposed to turn, or is there one that is fixed

You have a clutch fan on this vehicle. you need to make sure if it is the fan that is loose at the front of the pulley or the pulley is loose at the water pump. If it loose at the pump then replace the pump. And all of the pullies should turn, with the exception of the bottom center. this is the crankshaft pulley that drives the other ones. it will turn if you put a wrench on it

Feb 13, 2011 | 2003 GMC Envoy

1 Answer

2004 gmc envoy. has a 6cyl and a serp belt. the center pully off set to the left (i think its a water pump) has a bad wobble and making a horrible noise. Not over heating and no leaks. should i just change...

If the fan is attached to it than it is the water pump making the noise and it will need to be replaced. If the fan clutch is not attached to it than it is either the idler pulley or the tensioner pulley. The tensioner is on the passenger side (left) of the front of the motor.

Oct 07, 2010 | 2004 GMC Envoy

1 Answer

I have A nissan frontier 2002 with overheatin problem I chance the heater core the radiator cap I check the radiator and the overheat problem continue

Check the water pump for leaks by its weep hole. Also remove its drive belt and see if its pulley is loose. if so replace the pump

The other items are the cooling fan, fan relay(if applicable) some models use a clutch, check clutch see if its engaging at proper temperature.

If you determine it to be the water pump might as well do timing belt/ chain and corresponding engine seals and oil pump at the same time. May cost a lot now but got about 60k before some of theses items become an issue again.

May 20, 2010 | 2002 Nissan Frontier Crew Cab

1 Answer

How to replace waterpump?

You don't have to be a Brainiac to realize that a properly operating water pump is key to your engine's survival. Shaft leaks or a wobbly, loose and/or noisy hub indicate that a replacement is needed. Similar woes can also plague fan clutches, where excessive fore/aft play or simple non-operation are replacement indicators. Both units keep operating temperatures under control and prevent boiling fluids from blowing through cylinder head gaskets2_bing.gif.

A properly operating water pump is key to your engine's survival.
Most applications find the water pump mounted on the front of the engine, with a drive pulley attached to the pump hub. Either a V-belt or a serpentine belt usually drives the pulley. If so fitted, the fan clutch is mounted to the pulley with bolts through its flange. These instructions cover vehicles with conventional (i.e., front-to-rear-oriented) engines. Front-wheel-drive vehicles can be a tricky proposition because the engine is often mounted sideways, making belt access trickier and occasionally requiring removal of the timing chain. If this is your situation, assess your skills and have a professional mechanic do the job if needed.

Feb 26, 2010 | 2002 Pontiac Montana

3 Answers

Can't get the fan off a 2002 trailblazer

dont hold it,i personally bang the fan clutch nut with a long chicel and sounds funny but works it before taking belt off.

Jun 13, 2009 | 2002 Chevrolet TrailBlazer

2 Answers

Do I need any special tools? How Hard is it?water pump 2002 aztek

take everything around your water pump of and use a metric 10 box end wrench

Apr 30, 2009 | 2002 Pontiac Aztek

2 Answers

Change water pump

If you have any questions feel free to ask. Let me know if you dont get diagrams(happens sometimes)

0900c1528004319d.jpgReverse rotation water pump—2.5L and 4.0L engines
  1. Before servicing the vehicle, refer to the precautions in the beginning of this manual.
  2. Drain the cooling system.
  3. Remove or disconnect the following: NOTESome 4.0L engines are equipped with a fan clutch that threads Directly on to the water pump shaft. This fan clutch is equipped with right-hand threads. NOTEDo not store the fan clutch assembly horizontally, silicone may leak into the bearing grease and cause contamination. NOTEOne of the water pump bolts is longer than the others. Note the location for reassembly.
    • Negative battery cable
    • Electric cooling fan connector
    • Accessory drive belt
    • Engine cooling fan and pulley
    • Water pump pulley
    • Power steering pump
    • Lower radiator hose from the water pump
    • Heater hose
    • Water pump and discard the gasket
To install:
  1. Clean the mating surfaces of all gasket material.
  2. Install or connect the following:
    • Water pump using a new gasket. Torque the bolts to 17 ft. lbs. (23 Nm).
    • Heater hose
    • Lower radiator hose
    • Water pump pulley. Torque the bolts to 20 ft. lbs. (27 Nm).
    • Power steering pump
    • Engine cooling fan and shroud. Torque the bolts to 31 inch lbs. (3 Nm).
    • Accessory drive belt
    • Electric cooling fan connector
    • Negative battery cable
  3. Fill and bleed the cooling system.
  4. Start the engine, check for leaks and repair if necessary.
3.7L Engine
  1. Before servicing the vehicle, refer to the precautions in the beginning of this manual.
  2. Drain the cooling system.
  3. Remove or disconnect the following:
    • Negative battery cable
    • Fan and clutch assembly from the pump
    • Fan shroud and fan assembly. If you’re reusing the fan clutch, keep it upright to avoid silicone fluid loss!
    • Lower hose
    • Water pump (8 bolts)
  4. Installation is the reverse of removal. Tighten the bolts, in sequence, to 40 ft. lbs. (54 Nm). 0900c1528004319e.jpgWater pump tightening sequence—3.7L

Nov 15, 2008 | 2002 Jeep Grand Cherokee

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