Question about 2003 GMC Sierra 2500HD

1 Answer

How do i take the clutch fan off to get to the water pump

2003 GMC Sierra

Posted by on

  • 1 more comment 
  • znyusa Jan 26, 2009

    trying to replace the waterpump

  • Roberta Smith
    Roberta Smith May 11, 2010

    ok and you need to be careful doing it ... there should be four bolts at the front of that fan... hold the fan blade with one hand while you turn the bolt ...


  • Roberta Smith
    Roberta Smith May 11, 2010

    the sentence wasn't finished... trying to change the water pump ?



1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that gotĀ 5 achievements.


    An expert that hasĀ over 500 points.


    An expert who has answered 200 questions.

  • Expert
  • 202 Answers

Sometimes there are bolts on the fan clutch or one big bolt that is reverse threaded and requires a big wrench or special tool to get off. leave belt on engine and hit wrench with hammer to loosen and spin off by hand.

Posted on Jan 26, 2009


1 Suggested Answer

  • 2 Answers

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

a 6ya Mechanic 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 repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

I replaced the clutch fan on my gmc 2003 envoy. But I still have the same problem, the noise is so loud, is there a computer that controls the fan?

you mention you have a clutch fan then you don't have any electrical control on the fan.
remove the belt to see if it 's the problem could be water pump bearing or else
hope it helps

Sep 29, 2014 | 2003 GMC Envoy

2 Answers

Fan blades wobbling causes Serbentine belt to jump off

sounds like the clutch fan needs to be replaced

Jul 05, 2014 | 2003 GMC Sierra

1 Answer

How to change the water pump on 98 GMC Sierra

Michael is correct on replacing water pump but if you are mech. inclined it can be done by removing upper fan shroud and serp. belt only. leave fan on pump until removed. remove 4 15mill bolts and the whole assembly. apply gasket sealer to both sides of gasket and insert 2 upper bolts to keep gasket in place when reinstalling.I have a 1998 gmc and did this a couple days ago while installing injection spider.

Jul 28, 2012 | 1998 GMC Sierra

1 Answer

How do i remove the fan from a 2003 gmc, 2500hd 4x4 6ltr, water pump?

Hello: Behind the fan and in front of the water pump there is a big nut, turn it counter-clockwise to loosen. (leave the belt on when removing) There is a special wrench for this, Auto Zone, Advance Auto etc) Sometimes you have to hit the wrench with a sharp blow to break it loose.

Jan 08, 2011 | 2003 GMC Sierra 2500HD

1 Answer

Replacement of water pump on 2004 gmc sierra 2500hd 6.0l. any tips on removal and installation

Remove or disconnect the following:

Air outlet duct Coolant Inlet radiator hose from the water pump Upper fan shroud Cooling fan and clutch assembly Drive belt Radiator outlet hose from the coolant pump Surge tank hose Heater hose Water pump


DO NOT use cooling system seal tabs (or similar compounds) unless otherwise instructed. The use of cooling system seal tabs (or similar compounds) may restrict coolant flow through the passages of the cooling system or the engine components. Restricted coolant flow may cause engine overheating and/or damage to the cooling system or the engine components/assembly.

Install or connect the following:

Water pump. Install the water pump bolts. Tighten the water pump bolts first pass to 11 ft. lbs. (15 Nm); tighten the bolts final pass to 22 ft. lbs. (30 Nm). Water pump drive belt pulley and bolts (if applicable). Tighten the pulley bolts first pass to 89 inch lbs. (10 Nm); tighten the bolts final pass to 18 ft. lbs. (25 Nm). Surge tank hose Heater hose Outlet radiator hose to the coolant pump Drive belt Cooling fan and clutch assembly Upper fan shroud Inlet radiator hose to the water pump Air inlet duct Coolant

Jan 15, 2010 | GMC Sierra 2500HD Cars & Trucks

1 Answer

Only cools when driving instant warm when i slow down

I would check your water pump and clutch fan. There should be a weep hole under the water pump that will start to leak when the bearing starts to go.

Jul 10, 2009 | 1997 GMC Sierra

1 Answer

2000 gmc sierra 2500 the engine temp rises when stopped. It has a 6.0 V8 i also noticed the transmission temperature is going above 200degrees, thats never happened even hauling loads in texas heat

Just guessing but, I'd say either fan clutch is going bad, not turning as fast as it should be once temps go up or if you have electric fans, either fans or relays bad. I'm leaning more toward the fan clutch. The fins on the impeller of the waterpump can also wear done over time and reduce the amount of water flow.You may also want to make sure the fins in the radiator are clean and not stopping air flow. I'm assuming that when you're moving there's no problem so that should say that water pump, thermostat are doing good. Please rate this. Thanks

Jul 02, 2009 | 2000 GMC Sierra

1 Answer

How to remove a 2003 GMC Sierra 1500 water pump

first what you want to do is locate the water pump. then release then tension off the belt that it is connected to. there should be 2 or 3 bolts and undo them and pull it out. then replace with the new one.

Apr 29, 2009 | 2003 GMC Sierra 1500

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

295 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts


Level 3 Expert

77499 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22306 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6927 Answers

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

Answer questions

Manuals & User Guides