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

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. 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.

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 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

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 ? 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 ?

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 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

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. 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.

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. 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.

How do I go about checking my turbo ? How do I go about checking my turbo ?

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

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

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 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

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 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

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

How many miles on your last oil change ? How many miles on your last oil change ?

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 ? 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 ?

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

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

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