45 k on my 2018 L5P. Has ran great pulling our 30 ft travel trailer. All of a sudden last week went into low power mode. Shut down, restart, then drove another 100 yards and went into low / reduced power mode again. Pulled over and called for a tow to the local GM dealer. While waiting, the engine idled smooth, would Rev up smoothly and sounded great. Been in the shop now for a week ( impacted by the holidays), but what I am hearing from the tech the codes are pointing to a fuel pressure issue. He continues to converse with GM on what to do next. I wish I had more info on the codes being activated and will visit the dealer on Jan 3 to get the latest update.
Very good video!!! I'm having similar codes like the 0046 and the 2599. I only have 80,000 miles on mine. I purchased the vane position sensor, but it doesn't match any of the sensors I have on the truck.
EXCELLENT video, thanks Dan! Also great thatyou mentioned that you got DPF fluid codes as well. I got similar but some different codes. A local diesel shop guessed actuator, DFP heater and DPF pump. I'm hoping just actuator may solve this, now I know how to try.
For whatever reason the Duramax with Allison trans can go crazy if a code is thrown. Recently had Fuel Temperature sensor go off which in returned caused my trans to go crazy. Took to a diesel performance shop to double check, they said its normal for a code to fly and them makes things crazy, I never new it would be that crazy.
A bad ignition switch can cause the trans to go crazy the ignition starts getting a bad connection on the contacts and does not supply the proper voltage to the trans causing all kinds of problems
STABILITRAC can throw a lot of ghost codes that can make repair facilities a lot of money and not even get close to the exact reason for the reduced engine power. We have a sudden attack of the TRAILER BRAKE CONTROLLER which then threw the REDUCED ENGINE POWER and CYLINDER 7 which was NOT defective. In my case we received; P0097, P00F4, P0113, P227B, P227D, P0207, P021A, and P1050, P0307. Just to get the TRAILER BRAKE CONTROLLER to SHUT UP I unplugged my trailer wire, pulled the trailer brake controller fuse and even the trailer brake charger fuse and it STILL continued. Turns out the wire harness was damaged from rubbing on the frame and had exposed wired that were shorting and grounding out that also caused other systems to malfunction. True these systems were in need of attention (NOX sensors and DEF Pump) however they had nothing to do with either the TRAILER BRAKE CONTROLLER or the DEF pump. We have also had the REDUCED ENGINE POWER just from the MASS AIR FLOW wire being loose. After replacing the NOX sensor, pulling the trailer brake switch, trailer brake wire, and trailer brake controller we repaired the wire put it all back in and the only thing that was left was the DEF Pump. SUDDENLY, we also needed a new particulate exhaust sensor too (imagine that).
I’m having this problem right now, replaced the acuator now it’s throwing a P003A code. Do you think I need to do a relearn? The handle on the acuator doesn’t always work when I start it
Those cleaning systems for the most part run at higher RPMs, like highway driving so extended idling for long periods, can sometimes lead it to not cleaning and force the cleaning but if your actuator is not working correctly, you are not getting the boost you need, and it will run very dirty, which can force the clean as well. What does your boost gauge read? Is it reading like it normally did or lower
@@diydan7019 I’ve got a service truck doing this bull crap 5500 stellar tire service crane PTO powered boom truck illl tell my boss to look into this part it was the electric motor for the turbo right?
Ok because my truck is having the same issue been to the dealers 3 times and still no fix my truck is bringing up p0191 for fuel rail pressure sensor but mechanic says he replaced it but the same codes coming up and keeps going into limp mode
@@travonelam7466 that code has more to do with your fuel pressure which could be caused by a fuel filter housing is a very common issue possibly a injector or the wiring pigtails to the injectors is more likely I don’t think it is going to be your actuator on the turbo good luck
Great video! Guess I've been lucky with the actuator. I'm at 433k miles and mine just started acting up
Now thats how you do a video..Concise and to the point..great vid
45 k on my 2018 L5P. Has ran great pulling our 30 ft travel trailer. All of a sudden last week went into low power mode. Shut down, restart, then drove another 100 yards and went into low / reduced power mode again. Pulled over and called for a tow to the local GM dealer. While waiting, the engine idled smooth, would Rev up smoothly and sounded great. Been in the shop now for a week ( impacted by the holidays), but what I am hearing from the tech the codes are pointing to a fuel pressure issue. He continues to converse with GM on what to do next. I wish I had more info on the codes being activated and will visit the dealer on Jan 3 to get the latest update.
What did it end up being?
Very good video!!! I'm having similar codes like the 0046 and the 2599. I only have 80,000 miles on mine. I purchased the vane position sensor, but it doesn't match any of the sensors I have on the truck.
EXCELLENT video, thanks Dan! Also great thatyou mentioned that you got DPF fluid codes as well. I got similar but some different codes. A local diesel shop guessed actuator, DFP heater and DPF pump. I'm hoping just actuator may solve this, now I know how to try.
For whatever reason the Duramax with Allison trans can go crazy if a code is thrown. Recently had Fuel Temperature sensor go off which in returned caused my trans to go crazy. Took to a diesel performance shop to double check, they said its normal for a code to fly and them makes things crazy, I never new it would be that crazy.
A bad ignition switch can cause the trans to go crazy the ignition starts getting a bad connection on the contacts and does not supply the proper voltage to the trans causing all kinds of problems
Hi there! My 2019 Chevy Silverado 2500 hd 6.6 has engine reduced power, any knows about that thanks?
STABILITRAC can throw a lot of ghost codes that can make repair facilities a lot of money and not even get close to the exact reason for the reduced engine power. We have a sudden attack of the TRAILER BRAKE CONTROLLER which then threw the REDUCED ENGINE POWER and CYLINDER 7 which was NOT defective. In my case we received; P0097, P00F4, P0113, P227B, P227D, P0207, P021A, and P1050, P0307. Just to get the TRAILER BRAKE CONTROLLER to SHUT UP I unplugged my trailer wire, pulled the trailer brake controller fuse and even the trailer brake charger fuse and it STILL continued. Turns out the wire harness was damaged from rubbing on the frame and had exposed wired that were shorting and grounding out that also caused other systems to malfunction. True these systems were in need of attention (NOX sensors and DEF Pump) however they had nothing to do with either the TRAILER BRAKE CONTROLLER or the DEF pump. We have also had the REDUCED ENGINE POWER just from the MASS AIR FLOW wire being loose. After replacing the NOX sensor, pulling the trailer brake switch, trailer brake wire, and trailer brake controller we repaired the wire put it all back in and the only thing that was left was the DEF Pump. SUDDENLY, we also needed a new particulate exhaust sensor too (imagine that).
I’m having this problem right now, replaced the acuator now it’s throwing a P003A code. Do you think I need to do a relearn? The handle on the acuator doesn’t always work when I start it
@@terrybonner1838 did the actuator rod on the turbo seem to be sticking when you had the actuator off of the turbo when moving it to check the turbo
How did you check the turbo?? To make sure it was not sticking??
When you have the actuater lever off move the turbo lever by hand and feel for any stiff spots in the stroke
my truck has 37 thousand miles 2017 showing reduced power it slows down with in maybe not even a block any body that can help me ........
If the actuator doesn’t move at all when you rev is that a sign that’s it’s bad. I think so but just wanted to be sure before I replace
Yes but it could also be not getting told to move if there is a wiring issue but i would suspect a bad actuator
Thanks! Wish me luck I’ll be changing mine out today.
Why is that happen?
Anyone ever have that lever come off at the bottom where it connects to the turbo?
Did you have to learn or program the actuator? I'm still looking for one for my truck. Everyone says national backorder.
No programming necessary and haven’t had a problem since I posted the video
Awesome, thank you
My truck throwing same codes. Did the actuator swap keep your truck fixed?
YES NO PROBLEMS SINCE
I have a 2018 GMC duramax, my power Engine reduce Came on also my dashboard also says continue driving clean filter, did your say that to?
No it didn’t did you have a lot of extended idle time before that came on
@@diydan7019 what do you mean by extended idle
Those cleaning systems for the most part run at higher RPMs, like highway driving so extended idling for long periods, can sometimes lead it to not cleaning and force the cleaning but if your actuator is not working correctly, you are not getting the boost you need, and it will run very dirty, which can force the clean as well. What does your boost gauge read? Is it reading like it normally did or lower
What did you end up doing my says the same thing same symptoms as yours
@JoseDiaz-if1pq i Took it to a shop and they had to do a manual region
My 2017 had this light come on while I was driving down the highway and I had to pull over, steering wheel locked up and it will not start
That sounds like you lost your belt which lost your power steering
This happened to me twice
Does it need programming after switching out this part?
No programming necessary
NO PROGRAMMING NECESSARY
Any update? Still okay?
No problem so far everything working good
@@diydan7019 I’ve got a service truck doing this bull crap 5500 stellar tire service crane PTO powered boom truck illl tell my boss to look into this part it was the electric motor for the turbo right?
@@X-R-P yes
😊😊
What is the part called
It’s just called an actuator but basically look it up under electric motor that controls the boost of the turbo
I believe the part number on mine was 12683983 but don’t quote me on that
Ok because my truck is having the same issue been to the dealers 3 times and still no fix my truck is bringing up p0191 for fuel rail pressure sensor but mechanic says he replaced it but the same codes coming up and keeps going into limp mode
@@travonelam7466 that code has more to do with your fuel pressure which could be caused by a fuel filter housing is a very common issue possibly a injector or the wiring pigtails to the injectors is more likely I don’t think it is going to be your actuator on the turbo good luck