2004 gmc 2500 hd durmax turbo diesal 6.6l smokes white smoke bad

Asked by Dec 26, 2015 at 06:26 PM about the 2004 GMC Sierra 2500HD 4 Dr SLE 4WD Extended Cab LB HD

Question type: General

smokes white smoke bad 125,000 miles only  at stops

4 Answers


I have a friend who has your same problem with his duramax and come to find out he was have bad fuel injection problema causing it to white smoke at stops so you need to check out your fuel injectors


I take it that you have white smoke when the truck is warmed up? It sounds like you have a leaking head gasket.

1 people found this helpful.

Leaking injectors would create black smoke from running too rich.


Not leaking injectors just like clogged up injection if the trucking any getting fuel on one injector then it can cause white smoke

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