Question about GMC Sierra 2500HD

2 Answers

I have a 2004 gmc sierra 2500 hd and some times runs good but some times the engine light comes on and i cant go faster than 20 mph not even if i press all the gas , i brought a mechanic and he wasn't available to fixed , can u figuer out whats goin on >?

Posted by on

2 Answers

  • 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.

    President:

    An expert whose answer got voted for 500 times.

  • GMC Master
  • 1,311 Answers

You need to have the codes scanned and from the codes you (or the mechanic) can attack the problem.

Posted on Oct 08, 2010

  • 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.

    President:

    An expert whose answer got voted for 500 times.

  • GMC Master
  • 2,050 Answers

When the engine light goes on, it will store a "code". You need that information to continue.

Posted on Oct 08, 2010

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

Tail and marker lights not working on trailer circuit, stop and turn signals work fine, 2004 gmc sierra 2500 hd


I would try hooking the trailer up to another vehicle and see if everything works right if everything works on the trailer I would start testing the trailer plug on your truck could be a wire has broken.

Jul 26, 2015 | 2004 GMC Sierra

1 Answer

Service 4 wheel drive message comes on and no lights for 2and 4 wheel drive come on. On my 2004 gmc


Often lights under a dash or indicators just blow out bulbs. If more than one thing isn't lighting and are centralized check fuses to see if its blown. Bulb or fuse. IMHO. MIGHT be a sensor on tranny too. Hope not.

Here's a video with detaile dinstrauctions and other people's fuse questions. New fuses?

Kind Regards,
Scott

Interior Fuse Box Location 1999 2007 GMC Sierra 2500 HD 2004 GMC Sierra...

Amazon com Fuses Fuses Accessories Automotive

2004 GMC Sierra fuse box Questions

Kind Regards,

Scott

Feb 11, 2015 | 2004 GMC Sierra

1 Answer

Electrical shutdown


wiring harness ground faulty or engine ground strap possible

Dec 18, 2013 | 2004 GMC Sierra 2500

2 Answers

1998 gmc 2500 wont keep running


The anti thieft system is keeping it from running.

Dec 13, 2009 | 2004 GMC Sierra 2500

1 Answer

I have a 2004 gmc sierra 1500 and the check engine light comes on if i go over 55 it starts to stall


you need to have the computer scanned for codes .check the fuel pressure at 55 mph.check the exhaust for restiction,bent,clogged convertor ,muffler.give me a shout back.wish you the best.

Oct 24, 2009 | 2004 GMC Sierra 1500 Crew Cab

1 Answer

Gmc Sierra Tailgate wont shut


Check with a Body Shop Technician for the proper description.

Jun 15, 2009 | 2004 GMC Sierra 2500

1 Answer

2004 GMC Sierra 2500 6L V8-Seems like the fuel tank is air locked. Very difficult to add fuel to the tank. Engine light came on about the same time as this problem started. Is there a valve that may be...


there is a filter under the pickup near the tank it gets plugged with dirt or dust and it makes the fuel come back at you while filling .. which in turn shuts off the gas nozel.. clean the filter and this will fix your problem.. thanks and holler if you need more Jerry

Apr 09, 2009 | 2004 GMC Sierra 2500

1 Answer

2004 GMC sierra cylinder miss fire code


Have you put new sparks plugs in it. If you havent I would try them first. Only run the ac delco plugs listed for the truck. I have had many people come threw the shop with misfiring and trucks running like **** and come to find out they put bosch or ngk plugs in it. Your manual says there good for 100,000 miles but there really only good for about 75,000 or so. Also run some lucas fuel treatment or b12 chemtool. both you ad straight to the gas tank. If it calls for one can for 20 gallons buy two and double the treatment it wont hurt you engine.

Jan 31, 2009 | 2004 GMC Sierra 2500

1 Answer

REMOVING SPARK PLUG WIRES


there are some special pliers for removing spark plug wires.

Oct 08, 2008 | 2004 GMC Sierra

1 Answer

I have a 2005 GMC Sierra 2500 HD and the doors will lock and unlocking theselves repeatedly. As if someone were playing with the lock button. It usually does it when it is/has been raining or rain is...


If your doors lock when you drive and hit about 20 mph there is a sensor in the transmission that can go out. Do you have any issue with it telling you what gear your in?

Aug 08, 2008 | 2002 GMC Sierra 2500HD

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

Related Topics:

105 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts

yadayada
yadayada

Level 3 Expert

75817 Answers

Freddy

Level 3 Expert

1311 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

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

Answer questions

Manuals & User Guides

Loading...