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Chris (aka-Moose)
Chris (aka-Moose), Technician
Category: Chevy
Satisfied Customers: 43908
Experience:  16 years of experience
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2003 silverado 2500HD Duramax. smoke from tailpipe with

Customer Question

2003 silverado 2500HD Duramax. Gray smoke from tailpipe with strong diesel odor. Runs good.
JA: How old is the engine? And when was it last serviced?
Customer: It is 2003 with 172,000 miles. new fuel filter last year (6000 miles). New fuel injectors at around 115,000.
JA: Are you fixing your vehicle yourself? What have you tried so far?
Customer: I change oil, grease, change fuel filter etc. Haven't tried andything for current problem
JA: Anything else you want the mechanic to know before I connect you?
Customer: No
Submitted: 2 months ago.
Category: Chevy
Expert:  Chris (aka-Moose) replied 2 months ago.

Welcome, I'm Chris (aka Moose) I prefer to work when others don't, I am here around lunch and after dinner till after midnight.

Possible causes for this color exhaust smoke are going to be:

  1. One or more injectors faulty
  2. Restricted air filter
  3. Stuck closed EGR valve.

Do you have a diagnostic tool?

Any trouble codes stored?

This is my 1st answer, but does not have to be my only answer. You the website and myself expect you to have a great experience with my help. Please let me know if you are pleased by selecting a star rating above or by replying and saying your pleased. Not rating or rating 1-2 stars does not benefit you nor me in any way. Follow up and reply as often and when needed, there is no extra charge to do so.

Thanks Moose.

Expert:  Chris (aka-Moose) replied 2 months ago.

Hello again Chris here,

  • I am following up with you to see if you got everything you needed from my answer. We're you pleased with my help?
  • If you were not pleased with my help, please let me know by replying so I can help more.
  • This post is coming up on the 7 day mark where it times out. When a post times out, that means it's no longer on my active list (you reply and I may never know it.)

Thanks Chris

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