Question about 2003 GMC Sierra 1500

1 Answer

2002 gmc sierra truck won't start replaced filter

My truck will start run a couple of miles then stop. we replaced the filter because we thought trash was getting in the fuel line but it still has the same problem Same with my 2003 sierra. I will strt it and almost the first time I slow down, the engine just shuts off. It doesn't sputter. All the electrical stuff is still on but no check engine light.

Posted by on

  • 1 more comment 
  • gilejc Jul 10, 2008

    Should I thr an octane booster? We just recently moved to a place where the octane is lower. Or maybe change the fuel pump or filter?

  • gilejc Jul 10, 2008

    Thank you I will check it out. I appreciate the help! I will update when I get it fixed.

  • gilejc Jul 12, 2008

    Hey, My question was somehow added in with someone's my vehicle is the second half of the question. Anyhow, I changed the air filter and that did the trick. We were recently on a dirt road trip and it must've been clogged. Thanks!



1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 321 Answers

Both vehicles?I would suspect bad fuel,water contaminated possibly?

Posted on Jul 10, 2008

  • David Fleming Jul 10, 2008

    Hopefully it isnt water in the tank.Drygas is an additive you put in the tank,and it absorbs water,but if you got gas at a station and they had water in their underground tanks.......thats what i am getting at.



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

2000 gmc Sierra starts but stalls

Check the fuel pressure while its running. It sounds like the fuel filter is stopping up. Fuel filter should be changed every 50 thousand miles or so. If the filter is bad it won't be long until the fuel pump has to be replaced (located inside the fuel tank)! It's a lot easier to replace the filter before the pump is damaged!

Jun 10, 2014 | 2000 GMC Sierra

1 Answer

2002 gmc Sierra 6.6 turbo diesel won't start, has a black and blue wire just under the fuel filter thats been ripped off and can't find where it' should connect to.

wires broke under fuel filter is the water in fuel sensor.need to replace water in fuel sensor install new fuel filter pump the primer located on top fuel filter 30 times until stiff then try to start truck.the water fuel sensor got damaged became loose leak out fuel in fuel filter causing hard start problems, diesel engine wont start if air in fuel system or air filter stopped up.

Sep 18, 2012 | 2002 GMC Sierra 2500HD

1 Answer

1997 gmc sierra 3500 won't start

When you turn the ignition to start, do you hear the starter turning and the solenoid engaging the flywheel ? test your starter by jumping it and see if the engine turns over. If this works, then you might consider in checking fuel pressure. Do you have any codes in your ECM ?

Jun 24, 2017 | 1997 GMC Sierra

2 Answers

02 gmc 4.8 code po336 i replaced the sensor but still won;t start

try replacing the oil pressure switch on the back of the block. If IT DOES NOT DETECT OIL PRESSURE IT WILL NOT RUN Kills the fuel pump.

Nov 21, 2009 | 2002 GMC Sierra

3 Answers

2002 gmc sierra wont start without useing jumper

Yes it has a rubber cover over it in the engine compartment.i would change the relay.good luck.

Aug 01, 2009 | 2002 GMC Sierra

1 Answer

2002 GMC sierra dies

I have the same problem with mine, and after some time i decided to clean the carberator and it started right up... No more problems..

Sep 02, 2008 | 2002 GMC Sierra

2 Answers

2002 gmc sierra truck won't start replaced filter

truck turns over for a few seconds then just spins

Jul 05, 2008 | 2002 GMC Sierra

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

397 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