Question about 2003 GMC Envoy

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I replaced the fan clutch and it was fine for like 3 munths now the light is on again im thinking its the ecu its a 03 gmc evoy inline 6. thanks the code is p1481 thanks

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  • GMC Master
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There a lot of aftermarket fan clutches out there that just don't hold up. Purchase either a GM part or a Dorman replacement.

Posted on Sep 30, 2010

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Posted on Jan 02, 2017

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3 Answers

How much should I expect to pay to have the fan clutch and thermostat replaced in my 2004 Envoy?


The parts prices are $36 thermostat and depending on fan clutch model $88 - $260 From autoparts warehouse site
which leaves $580 for draining system and replacing parts and refilling system plus time a bit steep
get another quote from a different mechanic and decide

Apr 18, 2017 | 2004 GMC Envoy

1 Answer

Can a 2003 gmc evoy 4.2 6 cyl tow a 6x12 uhal trailer not exceeding 3500 pds


this truck should be able to handle the task. does the truck have a tow haul/ switch on the drivers area. and you can look in your owners manual for more information

Sep 18, 2011 | GMC Envoy XL Cars & Trucks

2 Answers

My 96' gmc cargo van 2500 series V8, 5.7??? is ALMOST over-heating as im driving it, then the guage drops too normal. stays that way for a few minutes and starts too creep up to the red line again, then...


I would be looking for a sticking thermostat, especially if it hasn't been changed for 2 or 3 years. Less likely would be the clutch fan not working properly. Hope this helps.

Jan 16, 2011 | 1996 GMC Savana

1 Answer

02 gmc envoy. was trowing codes for the accelerator position sensor, throttle position sensor, fuel tank pressure sensor, 1635 5volt circut 1, and fan clutch codes. Fan clutch replaced about 30 days...


Hi, the clutch itself is driven by a separate circuit. If anything is pulling down PCM power, it would have to be the fan relay coil. Perhaps the relay has shorted from the coil to the contact. Recommend you swap out the fan relay. Let me know if you have any questions, and thanks for using FixYa.

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Jan 13, 2011 | GMC Envoy Cars & Trucks

1 Answer

1 have 03 envoy,6cyl,have replaced viscouis fan,fan still runs a lot, dealer has checked twice all ok


Do you have the check engine light on? If a fault code of P1481 or P1484 is coming up with a scanner, the fan clutch is bad.

Aug 22, 2010 | 2003 GMC Envoy

1 Answer

98 GMC jimmy started to slowly overheat after sitting for 15+ minutes. Got a little over 1/2 way mark in about 45 minutes then once I got going it cooled back down. Replaced radiator, radiator cap, and...


cooling fans. either electric or thermo clutch(heat tightens up a coil spring to make it spin faster as needed) If it has electric fans then they may be going bad and not spinnig fast enough. if its the mechanical type with the thermo clutch, its not engaging strongly enough. much like and old stick shift car with a bad clutch.

Aug 17, 2009 | 1998 GMC Jimmy

1 Answer

How to take out fan clutch


you need a special tool(fan clutch removal tool), autozone will let you borrow for free with a security deposit. Make sure engine is cold. Remove negative battery terminal1. Drain all coolant, and remove top radiator hose. 2.remove fan shroud on radiator(transmission cooler lines may need to be disconnected and slide off the fan clutch harness on the RH side). 3.loosen fan bolts on fan clutch. 4. use fan clutch tool to unbolt main fan clutch bolt. 5. Unplug fan clutch electrical harness. Reverse to install!! NOTE: You may need to reprogram the ECU if you install a new fan clutch and your check engine light comes on. Make sure you refill coolant with GMs recommended dexron coolant. Hopefully this helps....please rate....thanks!!

Aug 07, 2009 | 2004 Chevrolet TrailBlazer

1 Answer

My envoy fan code p0495


I am familiar with this code (I am a dealer tech) and the repair is to replace the electrically controlled fan clutch, it has failed, fairly common problem, it is around $150.00

May 19, 2009 | 2002 GMC Envoy

2 Answers

P0172 and P0128 Error Code 2003 Trailblazer 4WD


PO172 means that an oxygen sensor in bank 1 detected a rich condition (too little oxygen in the exhaust). I would replace the thermostat first. The computer could be injecting too much fuel because it thinks it never gets to operating temperature. That may keep the light off.

Jan 28, 2009 | 2003 Chevrolet TrailBlazer

1 Answer

Ticking noise coming from my 2004 envoy


like ticking while idling try unplugging eletric fan clutch harness to see if it goes away if it does replace fan clutch and its called a viscuss clutch fan.

Dec 28, 2008 | 2004 GMC Envoy

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