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2005 GMC Sierra Duramax 6.6 Changed air filter, oil and fuel. 20 mins of driving and lost all power. Code reads only P0299. Not sure what to check first

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3 Answers

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  • GMC Master
  • 53,770 Answers

Code p 0299 refers to turbo/supercharger ---low boost=== causes --- mechanical fault
check for all turbo hoses tight , inter cooler not split or has a hole in it

Posted on Dec 07, 2015

  • 17 more comments 
  • Martin Larocque
    Martin Larocque Dec 07, 2015

    I will go check that and get back to you.
    I was also told i could of possibly disconnected the maf...
    Does that make sense if there is no code for that. ?

    The truck was running fine then all of a sudden all the power was gone and it stated to smoke when I push the throttle.

  • Bill Boyd Dec 07, 2015

    smoke (black smoke) is air fuel mixture wrong --not enough air for the fuel setting== turbo problem
    I never discount other suggestions but at this stage , the code and the smoke indicates failed turbo

  • Martin Larocque
    Martin Larocque Dec 07, 2015

    It's white smoke and my old air filter was very very dirty.
    Is it possible that the comp is confused about the extra air coming in now ?

  • Bill Boyd Dec 07, 2015

    possible but not probable
    The ECM tunes the engine every second of running so the confusion would be sorted out in the first 5 minutes of running
    With the air filter being so dirty , it is possible that the turbo has suffered mechanical damage ( bearing failure ) that is preventing it from working prioperly

  • Martin Larocque
    Martin Larocque Dec 07, 2015

    I just started the truck and it still won't rev but I can hear a slight squeak sound form behind the can that sounds somewhat like my turbo.
    Can't seem to hear it from over top of the motor tho.

  • Martin Larocque
    Martin Larocque Dec 07, 2015

    Thanks for your help so far Bill.
    When I was changing the fuel filter I broke the wire for the "water in fuel sensor".
    I have one ordered but I did jump that one out to see if that might have caused the problem but it didn't seem to be it. When jumped it read "water in fuel".
    I did an oil change, a fuel filter and air.
    Left my shop to head home and approx. 20 mins later I was sitting at a red light waiting and when it turned green I had no power left and white smoke with the smell of a freshly stared diesel came out.

    I heard no sound of anything wrong.

    Think it's possible because I was in there that maybe I broke a wire or disconnected something partially ?
    I have tried to look around for anything I may have touched but haven't really found much.

  • Martin Larocque
    Martin Larocque Dec 07, 2015

    How do I go about checking my turbo ?

  • Robert Wood
    Robert Wood Dec 08, 2015

    THE BOOST PRESSURE SENSORS ARE PRONE TO FAILURE ON THESE. ALSO.

  • Robert Wood
    Robert Wood Dec 08, 2015

    Raw fuel and coolant either one can cause the white smoke.

  • Martin Larocque
    Martin Larocque Dec 08, 2015

    Thanks Robert
    Wouldn't the boos pressure sensor show a code then ?
    The white smoke is def raw fuel. I can smell it.

    Does the turbo just stop working with no sign of a problem or any noise or oil or ?

    Thanks

  • Bill Boyd Dec 08, 2015

    Yes --- the biggest failure of turbo units is that the bearings seize at high rpms and the turbine wheel or compressor wheel just shear the end off the shaft

  • Robert Wood
    Robert Wood Dec 08, 2015

    As Bill said the turbo spins so fast they can die pretty quickly with little or no warning .

  • Robert Wood
    Robert Wood Dec 08, 2015

    How many miles on your last oil change ?

  • Martin Larocque
    Martin Larocque Dec 08, 2015

    I change my oil and filters when the truck tells me too. Which is pretty often and I've always kept up with everything since I bought it new.

    The strange thing I find is that
    I was sitting at a light listening to it idle and when I went to leave on the green, that's when I had no more throttle and it just sputtered.

    One guy said that maybe I might not have put enough oil and the high pressure sensor could be doing this ?

  • Robert Wood
    Robert Wood Dec 08, 2015

    Do you have a scan tool that can pull freeze frame data ? This is live data at the moment a code sets.

  • Martin Larocque
    Martin Larocque Dec 08, 2015

    Yes I do Robert.
    Not sure what steps to take with it though.
    I have a Innova 3100.
    CanOBD2. Diagnostic tool.

  • Martin Larocque
    Martin Larocque Dec 08, 2015

    Is there something specific I'm looking for when I use the freeze frame function ?

  • Robert Wood
    Robert Wood Dec 08, 2015

    The 3100 does not show to have this feature. Knowing what conditions the code was set under helps to pinpoint the cause/s. Have you verified the EGR as working correctly ?

  • Martin Larocque
    Martin Larocque Dec 09, 2015

    I found a crack in the top flat casing cover for my MAF. The crack looks like it may have damaged the resistors underneath.
    I unplugged it and the truck ran exactly the same.

    Is there anyway I can test this before I go buy a new one ?

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  • 11 Answers

There might be trouble on ur hoses' connections

Posted on Dec 08, 2015

  • Martin Larocque
    Martin Larocque Dec 08, 2015

    I will check that out today.

    Thanks

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  • GMC Master
  • 5,911 Answers

WHAT BRAND AIR FILTER DID YOU INSTALL ?

Posted on Dec 07, 2015

  • Martin Larocque
    Martin Larocque Dec 07, 2015

    Fram extra dust protectin

  • Martin Larocque
    Martin Larocque Dec 07, 2015

    Can you go check out the conversation I've been having with Bill Boyd.

    I think you might be able to help me a little better.
    Thx

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Posted on Jan 02, 2017

Anonymous

  • 1 Answer

SOURCE: 2003 gmc sierra duramax 2500

Problem with Diesel Fuel System. Gmc 2002 duramax 2500 HD 4x4 will start 

Posted on May 15, 2009

fixitriteman

Ray Shepherd

  • 431 Answers

SOURCE: LOW OIL PRESSURE ON 2007 GMC SIERRA 1500. CHANGED

have it tested using a manual gage if still low then main baring ore most likely bad that would mean a over hall if is really low and bearings bad should be making rattle noise when started up first few seconds

Posted on Mar 11, 2010

Testimonial: "thanks alot.truck is not making a rattling noise.we did check it with a manual gauge.it read about 10 at idol. press. gets better as you incr speed"

JIMMY

  • 1374 Answers

SOURCE: 2005 silverado lt 6.6 duramax diesel turbo..engine

Before we do anything else lets do a fuel pressure check to make sure the pump is a-ok as well as the fuel pressure regulator. Your gonna need shop manual for this as well as a fuel pressure tester. If all checks out then move to the Turbo code.
Turbo code looks like the waste gate is stuck open and your not building the boost. Do a visual inspection look for any signs of overheating and bearing wear. Check or change oil as needed.
With regards to the Mass air flow I believe you have to replace it. Keep in mind this thing might be the root of you whole problem.
I strongly suggest you use the shop manual for the codes you got. it will make this repair a snap.

Posted on Mar 19, 2010

saailer

David Burbee

  • 1871 Answers

SOURCE: error code P0093, no fuel leak, filter changed

Hello! #1; The injection pump inlet hose has been known to kink which will cause this fault...The line is foam covered...#2; Have you changed the Fuel Rail Pressure Regulator?
If so, the connector and its wiring may be open or resistive...The wiring is as follows...Purple White from regulator to ECM pin #42...Yellow from regulator to ECM pin #77...Check with an ohm meter set on X1 scale...Most important is the condition of the FRPR connector...Radio shack has a product called DOXIT...It cleans contacts by merely
spraying...No-touch cleaning...Excellent product...$14.95...Two spray cans (small) one cleans the other protects...Not much is necessary...Also clean the connector for the Fuel Pressure Sensor...Wiring; Tan...Orange/Black...And Yellow,,,

Send a comment with results...Guru...Saailer


I’m happy to help further over the phone at https://www.6ya.com/expert/david_6df67de3b14de867

Posted on May 13, 2010

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Turbo code looks like the waste gate is stuck open and your not building the boost. Do a visual inspection look for any signs of overheating and bearing wear. Check or change oil as needed.
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