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My 03 duramax cut off and wont start back - 2003 Chevrolet Silverado 3500

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Car wont start back up


Hi, It could well be the fuel pump and componants. But to get at it you will have to lower the gas tank . DO NOT SMOKE or use any metal tools when opening the tank. (expossion will occure) I would advise that you have someone help you with this if you do it yourself. Good luck

Mar 13, 2014 | 2003 Chrysler PT Cruiser

1 Answer

I have a 03 duramax 2500hd with 6.6 died while i was going down the road. I changed fuel filter added more fuel still wont start. Its now in the dealership has been for a month put in new fuel injuction...


there is an electric fuel cutoff activated by the ignition key switch..did they check this item,,is fuel getting to the engine at all..they can actually squirt raw diesel into the intake and it should fire up momentarily..if its really cold outside the fuel can gel up and stop the engine from running..need to add cetane booster to the fuel when its near zero outside,,about a quart per tank at each fill up.in rare cases they use starting fluid to run these but its not recommended a lot as this can blow the heads apart if misused..repost findings and take a look at the itemised bill to see what the mechanic did and how much time spent donkeying around with this...trim the fat off the bill if you can..they will usually cut into the labor and remove some of it for you..most of the labor costs is the troubleshooting phase anyway..

Feb 10, 2013 | Cars & Trucks

1 Answer

My 03 duramax started fine this morning but only ran for a fiew minnuts then shut off on its own and now it wii turn over but not start it seems to have fuel pressure can it be cam sensor or crank sensor...


To start with, a Duramax Diesel runs on an excess of 20,000 Psi of fuel pressure. Unless you have some specialized equipment,(and know how to use it) I do not know how you could possibly tell that the fuel pressure is OK.

Duramax Diesels also have had a lot of problems with glow plugs. This could explain why it will not start. Then again, it COULD be something totally different like a bad sensor. This could even be caused by a faulty fuel pressure sensor or a bad fuel pressure regulator.

The best way to find out is to scan the engine computer for fault codes and read the engine data from the computer to see if all of the sensors are providing the correct input to the computer.

Jan 15, 2012 | 2003 Chevrolet Silverado 2500HD

2 Answers

2002 chevy 6.6 duramax wont start even in warm weather or after motor is warm..... only starts with starting fluid. codes are p0335/p0193/poo87/p0090


The Duramax fuel filter assembly is bad about sucking air. Replace the fuel filter assembly. It comes with a new fuel filter.
I need some good feedback.

Oct 09, 2011 | 2002 Chevrolet Silverado 2500HD

1 Answer

Cabin lights will turn on manully but wont turn on with doors open fuel guage doesnt work but range does rpm guage doesnt work on an 03 chevy 2500HD duramax


for door light the swith need to be replaced and also check fusses always check the door pin with test light first see if there is current if there is then its the door pin

Mar 12, 2010 | 2003 Chevrolet Silverado 2500HD

1 Answer

2002 chevy hd duramax 4x4


Sounds like the PRNDL switch on the side of the transmission. Be sure and clear the code before trying to start after replacing it.

Jan 23, 2010 | 1999 Chevrolet Silverado 1500

1 Answer

03 Duramax Allison Transmission. Sometimes when


Sounds like an igition switch to me, with the discription you are giving.

Dec 12, 2009 | 2003 Chevrolet Silverado 2500HD

1 Answer

2005 gmc duramax seat warmers wont stay on


I have a 03 sierra 1/2 ton with the same problem.... I just took it to my dealership on friday and they said its the memory module... I think thats what they called it,,,, $500 plus labor for a new one.....

Oct 11, 2009 | 2005 GMC Sierra

1 Answer

'03 GMC Sierra with 6.6 Duramax starts with more difficulty over.


You have an air leak in the fuel supply side of the system.

Oct 08, 2009 | 2003 GMC Sierra

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