Comments on: Exploring the Duramax

By: bubba

bubba — Tue, 23 Feb 2010 03:27:17 +0000

i have a 04 duramax. the scan tool tells me injector circuit open cyclinder 2 and fuel injector grp. b supply voltage circuit open. i have put a new injector on and still get the same codes. i also have ohmed the wire from the injector to the driver module. i need help

By: curtis

curtis — Tue, 26 Jan 2010 01:49:49 +0000

Ihave a 2003 duramax that was starting hard and now woun’t start at all can you help me thank you.

By: David Lomas

David Lomas — Fri, 08 Jan 2010 14:38:05 +0000

Thank you for the article, may I ask a question on a problem I am having? I have an 07 Duramax which is making a muffled popping noise from the motor. This noise occurs intermittently while driving and when I come to a stop, it appears to be coming from the air cleaner area.
Only aftermarket part it has is a K&N air filter. Other possibly signs of this problem are grayish/black smoke while accelerating and low fuel mileage of approx. 12 MPG city/highway. Thank you for any help you can offer.

By: Richard

Richard — Tue, 03 Nov 2009 21:43:50 +0000

Aaron:
Somebody needs to put a scan tool on that one and peer into the datastream to see what’s going on. Can’t fix those by changing parts!

Wish I had better information.

Richard (author of Duramax article).

By: Julie Collier

Julie Collier — Tue, 03 Nov 2009 15:43:57 +0000

Aaron,

Thank you for your comment. I have forwarded your question to Richard for him to comment back. Please check back soon, and hopefully your question will be answered. He is extremely knowledgeable so I am sure he will have the answer.

By: aaron madzia

aaron madzia — Mon, 26 Oct 2009 22:35:27 +0000

very knowledgeable … quick question ..i have an 03 dmax…starts fine when cold…but once i run it and shut if off when its at running temp and try to restart it it wont start… already changed the fuel filter and crank sensor… any ideas? would it be the ficm?, injectors?

By: Julie Collier

Julie Collier — Fri, 23 Oct 2009 17:54:31 +0000

Darren,

Thank you for your wonderful feedback. This is a great testimonial to what AVI is all about, helping to make technicians like you be more successful. To show our appreciation for your business over the years, I am sending you a free Diagnostic 8-Ball and ASE/AVI T-shirt.

By: Darren Desmarais

Darren Desmarais — Fri, 23 Oct 2009 01:26:30 +0000

Another great article from avi. For the money, AVI is the best value for training materials I have
come across. I work mostly on heavy trucks, but have
a great interest in automobiles. AVI training has
allowed me to learn a great deal about OBD 2 and smaller diesels such as the 7.3, 6.0 and 6.4. Remember, “Before anything else, getting ready is the secret of success” Henry Ford. Thank You for helping me MAKE MORE MONEY!!!!!!!!!

By: Julie Collier

Julie Collier — Thu, 22 Oct 2009 12:52:07 +0000

Anthony,

Thank you for your comment, we really appreciate your feedback. Richard is very knowledgeable on diesels. If you click on technical, scroll down and click on older reviews, there is another article of his called “Common Rail Invasion” that is very good. We will soon add another article from Richard on the 6.4L Powerstroke.

By: Anthony Behnken

Anthony Behnken — Thu, 22 Oct 2009 11:19:32 +0000

Just read Your article, enjoyed it very much, great info, now I just need to remember info ! Thank you Anthony