Jump to content

2015 gmc seirra transmission codes

Adam33

By Adam33
in Troubleshooting & Recalls

 Share

Recommended Posts

Adam33 New Member

Adam33

Posted
Posted

I have two transmission code on my 2015 gmc seirra, P0700 and P0741. I had an appointment at the dealership  2 weeks ago and a day before the codes went away. I bought it there anyways thinking tbe codes are stored, all they done was a fluid change, which I needed done anyways.  The codes came back yesterday. So basically what the  truck is doing is sometimes the rpms  run high before changing . It seems it happens when the truck warms up. I done some research and could be several things between dirty fluid, wiring,  and transmission control module ( tcm) , solinode value.  Just wondering if anyone came across this issue,  thanks  in advance.  Any help would be appreciated 

CamGTP Senior Enthusiast

CamGTP

Posted
Posted

My opinion is that it needs a torque converter.


Depending on mileage of the truck it probably should have the rest of the transmission gone through as well.

Adam33 New Member

Adam33

Posted
  • Author
Posted

Forgot to mention, when the mechanic did the fluid change he said the torque converter looked good.  There was no shavings in the old transmission fluid 

newdude Senior Enthusiast

newdude

Posted
Posted (edited)

P0741 is Torque Converter Clutch Performance/Stuck Off.  

 

Trans has to come out of it.

 

When they changed the fluid, did they do a flush/exchange?  Or did they actually drop the pan?

 

Also, the tech couldn't have "looked" at the converter and said "yep its good".  Its a welded together item.  

 

At a minimum, and if you are lucky, you will need just a new converter.  The problem is, if the converter has been going over time and is just now setting codes, then there will be converter clutch debris in the trans and in the pan.  So expect a converter, new pump housings if they are scored, new valve body and TEHCM (the TCM and solenoid control assembly), possibly some other clutches like 4-5-6 clutches.  

 

No matter what repair gets done, do the transmission thermostat pill flip, the SureCool delete kit or the new lower temp thermostat from GM to drop your temps.  

Edited by newdude
BlaineBug Enthusiast

BlaineBug

Posted
Posted (edited)
16 minutes ago, newdude said:

P0741 is Torque Converter Clutch Performance/Stuck Off.  

 

Trans has to come out of it.

 

When they changed the fluid, did they do a flush/exchange?  Or did they actually drop the pan?

 

Also, the tech couldn't have "looked" at the converter and said "yep its good".  Its a welded together item.  

 

At a minimum, and if you are lucky, you will need just a new converter.  The problem is, if the converter has been going over time and is just now setting codes, then there will be converter clutch debris in the trans and in the pan.  So expect a converter, new pump housings if they are scored, new valve body and TEHCM (the TCM and solenoid control assembly), possibly some other clutches like 4-5-6 clutches.  

 

No matter what repair gets done, do the transmission thermostat pill flip, the SureCool delete kit or the new lower temp thermostat from GM to drop your temps.  

 

If you don't ask for it specifically I'm 99% sure they don't drop the pan for a normal transmission fluid service.  I asked a service writer at a local dealership.  I believe it was around $200 or so for a transmission fluid flush, but that didn't include anything involving pan removal.  So I did it myself, 2 gallons of the appropriate ACDelco fluid, filter, brake cleaner, and plenty of paper towels.  Exhaust didn't have to come out either, followed the tips here about making gentle clearance with a scissor jack.

With that being said I do remember what seemed like all of the 2016-2016 truck and SUV models having the issues with their torque converters.

Edited by BlaineBug
Adam33 New Member

Adam33

Posted
  • Author
Posted

He dropped the pan, I know that because he wanted permission to do so. He said everything looked good.The code that  stays is p0700, the p741 is pending and comes and go.

CamGTP Senior Enthusiast

CamGTP

Posted
Posted

P0700 just points to a general fault and not a direct fault. That code just means there is a problem. If the other code is a P0741, that is the direct fault and likely the cause of your whole issue with the transmission.

 

Torque converter failures are one of the most common issues with the 6L80e.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Recently Browsing   0 members

    • No registered users viewing this page.

  • Forum Statistics

    250.5k
    Total Topics
    2.7m
    Total Posts

  • Member Statistics

    342,947
    Total Members
    8,960
    Most Online
    Sothpaw27
    Newest Member
    Sothpaw27
    Joined

  • Who's Online   0 Members, 0 Anonymous, 485 Guests (See full list)

    • There are no registered users currently online

  • Latest Articles

  • Posts

    • Grumpy Bear
      Some Assembly is Required

      By Grumpy Bear · Posted

      www.enginelabs.com/news/what-i-learned-today-bearing-clearances-vs-oil-viscosities/     www.enginelabs.com/news/oil-viscosity-can-the-numbers-be-misleading/ The Big Lie… Coming full circle to the reason Lake discusses the Porsche engines in particular. Based on the 2000 samples in the SPEEDiagnostix database, increasing the oil viscosity in these engines, even those run on the track, showed no significant difference in results.   The smoking gun was in the oil chemistry. That is where the data shows higher instances of more wear. Molybdenum was the key; the higher the amount, the less the wear. Speed postulates that higher viscosity oils have more thickeners to artificially inflate their viscosity numbers. These thickeners lose viscosity under shear, and the result is that not all oils of the same viscosity have the same shear stability.   Having enough viscosity is the most important characteristic, but according to Speed, once that required viscosity level is reached, additive chemistry matters more than additional viscosity. Speed also states, oil pressure problems on the racetrack aren’t a viscosity problem; it’s an oiling system problem. Running a thicker oil is just a band-aid for an underlying oiling system problem.
    • Grumpy Bear
      Some Assembly is Required

      By Grumpy Bear · Posted

      Can it still be Assembled II?   Viscosity on the decline by various means. Heat on the rise making that worse. Engine RPM in the tank. Smaller motors with more boost trying to emulate an electric motor. Full torque, zero rpm. Then we will triple the OCI. Argh.    But wait....there is more. LSPI has pushed a shift from Ca to Mg and as that cost more PLUS the run to lower sulfur compounds the TBN is moving in the wrong direction for the increased OCI's demanded.    That not being enough to placate a demand for a parameter they can't measure the other sulfur bearing compounds are also under attack. That would be zinc and phosphorus sulfonate compounds. To some degree those are being replaced with boron esters and others, i.e. titanium ect. All of which have shorter service lives. And there there is the "Secrete Sauce" marketing for AW adds that 'Can't be detected by UOA's" but trust me because I (the blenders) never ever lie.    Spoiler alert; ALL additives are sacrificial! Smaller amounts of the old blended with less robust versions of the new do not equal longer service lives. So what are the blenders recommending? Wait for it.......   MOVING THE GOAL POSTS! OMG      Let's declare the long standing TAN/TBN crossover irrelevant and tell people that soot is a great 'graphite' based lubricant which can aid tribo films. Wait, what? Let's declare that the standards used for oxidation and nitration were to conservative and can be expanded. Let's tell them that because GDI fuel dilution, although being a VISCOSITY KILLER and an acid generator is actually okay because we have better base oils that limit viscosity failure limits. (Said knowing this is measured in fractions of a centipoise and in bases not commonly used in shelf oils)   Lying from the heart is not just the new normal but we have a public, a very young public, that is so ignorant of the facts and so sure of their "RESEARCH" into AI driven models base in regurgitated  instead of scientific research based unvarnished, peer reviewed FACTS that the incoming guard is loosing their grip on reality and the OEM's are tickled pink while the blends bend the knee.    You have an ever limited set of tools to work with. And sooner or later those will be taken from you as the API and the EPA strangle the last remaining fluids from the system. What you have left is your wits. If you care to use them.    At some point in the very near future it will not longer be possible to do "What is best for the machine", and be replaced with "The best you have access too". You WILL be rewarded with half the life and twice the cost. That isn't that hard to predict.         
    • Chuck FB
      Software Update

      By Chuck FB · Posted

      I trust you saw the other comment where he knew what he was talking about !. Yes, these darned newer vehicles with all their so smart they are stupid technology, goes and drains the battery down. As you might see my other comment, I installed a Noco 5 battery tender under the hood and at this point still have the cord routed so I have to lift the hood and then plug it in but am typically parked in a garage or a shed so its not risking the engine hood in the wind. That way I am assured or hopefully so of not finding I have a battery drawn down and can't even start the truck and that also damages the battery to draw it down too far. 
    • Chuck FB
      Software Update

      By Chuck FB · Posted

      I guess no surprise my guesses were wrong !, at least now I know if I ever happen to see it grayed out in my own truck as to what is going on.    I never happened to catch my truck with it grayed out, it seemed every time I would test to see if there was an update it never found anything and yet more than once I would check to see if there was an update and there was nothing, then a day later or even that same morning I would drive to town and after more than one engine shut down in town as I did my errands it would pop up that there is an update now ready to install and the only place I have a connection to the internet is at home by wifi so its not as if it grabbed the download while driving. I don't trust these new vehicles due to all the crap they can decide to do while sitting for some days not running and run the battery down so most of the time if I know the truck will sit for a few days I plug in the battery tender I have mounted under the hood and so the only time the truck must have downloaded software was when it was sitting in the garage where the signal is awful but I have that tender plugged in and somehow it managed to download it. I honestly detest all this crap, way to easy to leave a person stranded.    Since I don't trust any of it I don't do the install of the already downloaded software until I get home and sometimes have even sat in the truck to watch what its doing as its going through the process to its conclusion as its not like it is set up that it will tell you the next time you fire up the engine that the update that was initialed actually installed or installed properly. Yes I can go into the updates and see the list. After I go through the install where I feel its safe to do so in case it breaks down as a result, I will plug in the battery tender after the fact to recharge as I don't know how much power its taking just to do the install and that can take a while for it to install. 
    • nfisherman
      Software Update

      By nfisherman · Posted

      Thanks for the reply. All settings were correct and the engine was off, as it was supposed to be. It turned out to be something simple. I took a drive for about an hour. I must have had a low battery without knowing it. The voltage gauge on the display looked ok. At the end of my drive, I shut off the engine and the update prompt came up and it updated normally. It’s ironic because one of the features of the update is a reduction of battery drain. 

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...