How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Ron Your Own Question
Ron, ASE Certified Technician
Category: GMC
Satisfied Customers: 35064
Experience:  35 years in the Automotive repair business.
Type Your GMC Question Here...
Ron is online now
A new question is answered every 9 seconds

Wayne I have a 06 dura max with code p0299 code fallow the

Customer Question

Hi Wayne I have a 06 dura max with code p0299 code fallow the flow chart and not finding a answer the truck has no power and blows black smoke real bad it started off with code p003a witch I determine that the vgt was froze up I replaced the turbo and now I can see the vgt move on the scan tool but still no power no boost any help would be greatly appreciated
Submitted: 1 year ago.
Category: GMC
Expert:  Ron replied 1 year ago.

Hello, my name is ***** ***** I am a professional here at Just Answer. I have noticed that your question was not getting a response and thought I would see if you still need help with this.I apologize for the delay and I hope I can still assist you with this here.

The code P0299 indicates a lack of boost pressure, start first with Inspecting the plumbing after the turbo carefully for any signs of loose clamps or misaligned tubing. If there are no leaks found then run the turbo relearn procedure. I have enclosed it in the link below, copy and paste the link to your browser to open and view it.