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  1. Neuner

    P0307 + P0300 Misfire - '14 Suburban

    I'm getting both codes together, P0307 and P0300. Every time I read about both occurring in my search, everyone pointed towards the fuel injector. Wouldn't say engine runs rough, it just has a periodic 'hiccup'. It even took a while for the check engine light to come on. Occurs the whole time...
  2. Neuner

    TPS Issue

    There's connections within the fuse box and underneath it. The bulletin only mentions those under the fuse box. i inspected those and cleaned them even though they looked really good. I think the connections within the fuse box appear to have been the culprit. They were dirty and corroded...
  3. Neuner

    TPS Issue

    Thanks, I'll need to review. Following the Bulletin, I removed the fuse box to inspect the connections. The majority started to show corrosion or were dirty so I sprayed it with a contact cleaner. I also went ahead and replaced the associated Fuse #5 for the ECM / Throttle, just in case. Put...
  4. Neuner

    TPS Issue

    Found a Service Bulletin that is related to this issue. No.: PIP3783D Majority of the Conditions, Recommendations, and Instructions relate to potential shorts to ground or high voltage drops between the APP (TPS) and ECM. It points to pin outs C109/X109 and C205/X205 for review. I'm hoping...
  5. Neuner

    TPS Issue

    That didn't last long. Threw codes and went into limp mode twice this morning. Had to clear them quickly as it was not safe so I'm only assuming it's the same codes. I don't know what to do next. Replace wire loom plugs? Should I just give up and take it to a repair shop? I don't want to...
  6. Neuner

    TPS Issue

    Hopefully the last update; After all of the issues with replacing the Throttle Body, I was finally able to force the Chinese Diagnostic Tool to setup for a different GM model to wipe codes and initiate a throttle position relearn before sending it back. The throttle response and engine power...
  7. Neuner

    TPS Issue

    Slow boat from China and they sent me a used one even though I ordered new. Box opened, missing charger cord, and finger prints all over it. Even had the PO email and contact info stored. Going to return. Wouldn't trigger a relearn but was able to pull some diagnostic data that I wasn't able...
  8. Neuner

    TPS Issue

    Is the Tech2 the only way for us to trigger the relearn for the Throttle Position? I also have a Toyota Sienna that's needing it as well. Would be great if there was a scanner that performed this function for both like the Launch CRP129E Local shop will perform the reset for $80 each but I'd...
  9. Neuner

    Throttle Body Relearn

    Put the Old Original back in and now it's acting up for even that one. Got the Hitachi and it does not have the GM stamp on it like the others but it looks much nicer and was packaged much better. Even after sitting over the weekend with the battery unplugged (which also allowed a thief to...
  10. Neuner

    Throttle Body Relearn

    This really sucks. Picked up the replacement and installed. Idled at the typical RPMs but ran extremely rough and threw different codes triggering limp mode, stabilize and traction lights, etc. Ran 3 minutes, waited 1 min and then retried with the same effect. Stopped the relearn process...
  11. Neuner

    Throttle Body Relearn

    Thanks for that. If that is the case then how is ACDelco also claiming to be the manuf? Since the TPS Pedal Assembly and TB appear to be related and talk to each other or both to the ECM about what is going on, then I'd lean towards them both needing to be of the same manuf to eliminate...
  12. Neuner

    Throttle Body Relearn

    Oh yeah, saw that. It's about $150 in difference. Figured with the weird issues I'm having, didn't want to take the chance of introducing something else with what might not be OEM. I learned the hard way when I swapped in an OBDII fuel injected engine into my old Jeep and tried to save some...
  13. Neuner

    Throttle Body Relearn

    Put the old one on, and all is fine. No codes. Before and after Relearn procedure, idle is ~740. Going to exchange.
  14. Neuner

    Throttle Body Relearn

    Here's photos of the OEM that was on my vehicle and a pic of the new ACDelco. Where does it say Hitachi is OEM? Both have the GM stamp, same model # and QR Code.
  15. Neuner

    Throttle Body Relearn

    The reason is with my other thread; https://www.tahoeyukonforum.com/threads/tps-issue.139288/ GM Genuine. Going to put the old one back in and get this one exchanged. Thankfully it's quick and easy to replace.
  16. Neuner

    Throttle Body Relearn

    Did all that. Left battery disconnected for a couple of hours. Started it up, revved to about 2k and then settled to about 8-900 and stayed. Let run for 3 minutes. Turned off an let sit for 1 minute. When I started it again, it produced the same 2 codes and went back to idling at 3k. I...
  17. Neuner

    Throttle Body Relearn

    Cleared codes, started and idled at about 1500k. Drove it for about 30 minutes, most of it above 45 mph. I accelerated and decelerated quite a few times. It also did this on its own. As codes were detected, I cleared them. With foot off of gas, it would pull along at 45-50 mph. Idle at stop...
  18. Neuner

    Throttle Body Relearn

    Replaced the Throttle Body on our 2014 Suburban LT and went through the relearn procedures. Ran it for 3 minutes but it's at 3040 rpm for 15 seconds, drops to 2640 for 5 seconds and then back up to 3040. It does this over and over again. I shut it off and waited 60 seconds as instructed...
  19. Neuner

    TPS Issue

    As I went several days without issue, I thought I had it. Longest I had gone in a while. This morning it triggered again as I pulled into work. Checked connections, removed and reconnected them and no change. Next up I guess is to replace the throttle body. Found: Genuine GM 12629992...
  20. Neuner

    TPS Issue

    Thanks for the suggestion! Didn't know about a relearn. I downloaded and used an app that specifically resets the throttle. All of the dash lights came on and it said complete. Never seen that before. Anyways, going to move forward with one thing at a time. If this doesn't work, going to...
  21. Neuner

    TPS Issue

    The new Pedal Assembly I picked up was the exact same. Made in Mexico but with the GM Stamp/Sticker. Replaced it and made a small errand. Going over a speed bump it threw the code again and went into limp mode. It can't be the pedal. I'm really thinking it's a loose connection someplace...
  22. Neuner

    TPS Issue

    Had to go out of town and got a stomach bug so haven't done anything. The replacement pedal I got was from Mexico and so I started searching. Found reviews of others stating that their "Made in Mexico" pedal assemblies failed after only about 6 mos of use. I'm now searching for one that is...
  23. Neuner

    TPS Issue

    Thanks. It's one of those teeter-totter questions. Buy tool + find out you have to pay $1XX to replace the TPS anyways or replace the TPS, have it still act up and spend a lot more trying to resolve it in pieces because you don't have a Tech2. Being a newb with one of those, how hard will it...
  24. Neuner

    TPS Issue

    I do not. I use a simple OBDII with the Torque Pro app. I'll need to research as I'm not familiar. Any suggestions? Thank you for the response.
  25. Neuner

    TPS Issue

    Wasn't sure if this belonged here or in the Engine / Drivetrain so please move if needed. However, I would appreciate the attention as I am unable to find a resolution to this common problem. '14 Suburban LT, 2wd. Got the familiar p2127 error code; Faulty Accelerator Pedal Position Sensor...

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