Question about 2005 GMC Sierra

2 Answers

2005 GMC Sierra Overheating

I'm having a problem with this truck overheating. The truck is a 2005 GMC Sierra 1500 2 WD 5.3L V-8. So far we replaced the the water pump and the thermostat but the truck still overheats quickly. Also, when we run the heater it does not blow hot air but the gauge is running 230-260. I've noticed other people having similar issues...any help would be most appreciated..

Posted by on

  • 6 more comments 
  • Irene allard Feb 05, 2009

    If you are asking if I've changed the coolant...than, yes I've drained and replaced all the coolant. As far as I can see there are no leaks. FYI: When the car was idling for 1/2 hour it ran without any temperature issues--thought the issue was taken care of BUT as so as I drove it, about 1 mile, the truck overheated.

  • Irene allard Feb 05, 2009

    When the pickup starts to overheat the heater starts to blow cold air--I'm not sure what is causing this. If someone would talk me thru how to bleed the air off of the coolant system, I'll give that a try. Thanks.

  • Anonymous Feb 12, 2009

    I have the same problem. It's a 2004 GMC Sierra 1500 Crew cab. 5.3L
    Was the problem air in the system or was it the head gasket?


  • James Bradburn
    James Bradburn May 11, 2010

    is there a small bleeder bolt on the thermastat housing? Is there a bleeder bolt anywhere on the top hard coolent lines? If so crank the car turn the bolt till coolent or air comes out. But let the truck warm up some first. When there is a stream of coolent coming out and no air then its good. But being that there is no heat then it may take a min. Let me know how you doing on that.

  • James Bradburn
    James Bradburn May 11, 2010

    Ok but you changed the coolent but will need to bleed the coolant system to get all air out of it.

  • James Bradburn
    James Bradburn May 11, 2010

    Have you bleed the cooling system?

  • Frankie Klassen Sep 01, 2012

    I also have the same problem on my 04 Sierra 1500 Crew cab 5.3L, Did anyone figure out what caused this?

  • Anonymous Mar 21, 2014

    How do I replace the fuel pump on my 1998 Sierra GMC truck?

×

2 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Governor:

    An expert whose answer got voted for 20 times.

    Scholar:

    An expert who has written 20 answers of more than 400 characters.

  • Expert
  • 90 Answers

If your sure there is no trapped air in system after refill and air bleed off, is fan clutch pulling good air thru radiator? Even if it is, the heater should have coolant as hot as what temp gage is showing! Try backwards flushing heater core (dex cool is notorious for plugging these up). There is a TSB for cracked cylinder heads from GM for unexplained coolant loss.Remove drivers side valve cover, and look at center three head bolts for coolant around them, if coolant has been getting in thru this suspect area, there will be a milky/pudding like goo under valve cover and on head. GM had a company called Castec cast these and the areas near the head bolts were found to be too porous (NO recall YET!) Ya, you guessed it, replace heads! Unfortunately, if its gotten hot to many times, it has probably hurt the heads/gaskets. Hope this helps. PS: The castec logo is under the rearmost pair of rocker arms,may have to remove them to see.

Posted on Feb 05, 2009

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • GMC Master
  • 443 Answers

Hate to ask but did you put the thermostat in rightside up ? and someone else might be right did you bleed the system and get the air out of it? sometimes there is a air lock that will drive you crazy.. another thing when you replaced the water pump did it heat up before you changed it ?? if so did you put right gaskets on it for correct flow.. ? thanks Jerry if you have more holler

Posted on Feb 05, 2009

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:

1 Answer

I have a 2008 GMC Sierra 1500 4 wheel drive with a 4.8 motor I have no power to my fuel pump fuse.


Chevy Silverado and GMC Sierra Fuel Pump/Fuel System - Edmunds.com

forums.edmunds.com > Chevrolet > Chevrolet Silverado 1500

Mar 20, 2011 - 30 posts - ‎19 authors
Learn more about Chevrolet Silverado 1500 at the Edmunds.com Car Forums! ... problem with my 2000 GMC Sierra 1500 4.8LTR V-8 you described in your post. .... Ihave a 2008 gmc sierra last 8 vin 8Z160870 4WD pickup was ... removed power and truck died. have no power at 20amp pump fuse, key on ... Chevy Silverado and GMC Sierra Starting Problems ...
30 posts
Apr 18, 2013
8 - Car Forums at Edmunds.com
30 posts
Nov 7, 2011
9 - Edmunds.com
30 posts
Oct 28, 2008
More results from forums.edmunds.com

SilveradoSierra.com • Cranks but wont start. Fuel problem ...


Jan 25, 2016 | GMC Cars & Trucks

1 Answer

Says its overheating but no steam


What does the temp gauge say ?
Is the engine getting too hot ? Radiator full of coolant ?

Jan 19, 2013 | 2008 GMC Sierra 1500

1 Answer

High RPM issues


The overheating could be alot of things. Could be the fan or thermostat or leaking water and on and on. If the tow does not disengage the truck will run in a lower gear causing more gas use.... Hope this helps but just a guess without looking at it.... Good luck

Aug 12, 2012 | 2003 GMC Sierra 1500

1 Answer

I need an Illustrated Parts Break down for a 1989 GMC Sierra 1500. 350 w/ PS/PB loaded. Steering column Removal Repair or Replace


Hi.

Below you get all the parts breakdown for GMC Sierra 1500, including steering column assembly:

1500 SIERRA

Here diagrams for all 1989 GMC trucks.

If you need to take apart the steering column you will also need wiring. below the color codes and wiring tips:

GMC SIERRA 1988-2005 VEHICLE WIRING

Regards.

Ginko

Aug 31, 2011 | GMC C1500 Cars & Trucks

1 Answer

Lack of power and overheating on inclines while towing 2000 lb tent trailer with 93 GMC sierra 1500 4x4


Hello, zenagrin and thank you for asking your question on Fixya!

Here is a simple process that will walk you through a few steps that will pinpoint the overheating problem on your
1993 GMC Sierra, without even using any tools. It has helped millions of people, and I am certain that it will help you, because I wrote it for people in your exact situation.
How to diagnose your overheating
1993 GMC Sierra

Get more great money saving tips and tricks about your vehicle from: twitter.com/acoates23234

Thanks for the vote, and good luck!

Dec 31, 2010 | 1993 GMC Sierra

1 Answer

Possibly overheating


average 195-225 F would be the normal range, this would hot cold weather and varied types of driving

Nov 21, 2009 | 1990 GMC Sierra

1 Answer

2005 GMC Sierra overheating


Probably the thermostat.

Jan 03, 2009 | 2004 GMC Sierra 2500

Not finding what you are looking for?
2005 GMC Sierra Logo

2,383 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts

yadayada
yadayada

Level 3 Expert

63242 Answers

Freddy

Level 3 Expert

1311 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21981 Answers

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

Answer questions

Manuals & User Guides

Loading...