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  1. DJPoertsch

    Proposal for an tune on my Tahoe 5.3 2007 LTZ (Germany) with LPG system

    Hello everyone @Geotrash , @j91z28d1 . Yesterday I wrote to my LPG professional and converter again. He also told me that it would be typical behavior if you wanted to climb mountains with a wall unit attached to the back. Since LPG has a higher octane value, but a poorer energy density than...
  2. DJPoertsch

    Under load there is a brief loss of power which sounds like cylinder deactivation.

    I found the actual error. It was my air conditioning compressor. He simply reduced the power too much. Apparently he was just too old. I have now installed a new one and lo and behold, you can notice that it switches on, but I no longer have this dramatic loss of performance. I'm glad my Tahoe...
  3. DJPoertsch

    Proposal for an tune on my Tahoe 5.3 2007 LTZ (Germany) with LPG system

    Hello, dear community and professionals. Currently, I've bought an I1000 on eBay and already turned off the DOD under the Stock Tune. Now, my question for you. I myself live in Germany and will often be traveling with a caravan now. Which further tuning would you recommend to me to get a better...
  4. DJPoertsch

    Major power loss w/ AC on

    Here I found some information about our Problem, but I can't figure out how this solution will fit together that this throttle Body cleaning would solve the Problem with the reduce of power at that much what I feel when my compressor is turning on...
  5. DJPoertsch

    Dramatic loss of Power with AC on

    I have the same problem on my 2007 Tahoe. I lose a lot of power when my compressor switches on. I have already changed new spark plugs, ignition cables and the ignition coils. As soon as the compressor is switched on it feels like it is running on 4 cylinders. But only when it turns on. Three...
  6. DJPoertsch

    Major power loss w/ AC on

    I have the same problem. I lose a lot of power when my compressor switches on. I have already changed new spark plugs, ignition cables and the ignition coils. As soon as the compressor is switched on it feels like it is running on 4 cylinders. But only when it turns on. Three days ago I carried...
  7. DJPoertsch

    I want to replace my ignition coil, which one do you recommend Tahoe 5.3 2007

    I have a professional Aircon Sevice device in our workshop. We first vacuumed everything to eliminate a small leak on the service valve of the air conditioning system. The valve seal was no longer so good. After that, 1134g of refrigerant and 336g of oil were filled. According to GM's specifications
  8. DJPoertsch

    Under load there is a brief loss of power which sounds like cylinder deactivation.

    First of all, thanks for the tips. By chance, I have already found a few posts here in the forum that had the same problem as me. In this case, cleaning of the throttle valve was suggested. Someone wrote that a user had replaced the compressor and it didn't work at first. Only the cleaning of...
  9. DJPoertsch

    I want to replace my ignition coil, which one do you recommend Tahoe 5.3 2007

    First of all, thanks for the tips. By chance, I have already found a few posts here in the forum that had the same problem as me. In this case, cleaning of the throttle valve was suggested. Someone wrote that a user had replaced the compressor and it didn't work at first. Only the cleaning of...
  10. DJPoertsch

    Under load there is a brief loss of power which sounds like cylinder deactivation.

    I found the problem. It is the air conditioning compressor. As soon as it turns on, I lose a lot of power. I had never had that before. As soon as the compressor clutch engages, I have a massive loss of performance. That I can hear it as described on the engine noise even really loud. My...
  11. DJPoertsch

    I want to replace my ignition coil, which one do you recommend Tahoe 5.3 2007

    I found the problem. It is the air conditioning compressor. As soon as it turns on, I lose a lot of power. I had never had that before. As soon as the compressor clutch engages, I have a massive loss of performance. That I can hear it as described on the engine noise even really loud. My...
  12. DJPoertsch

    I want to replace my ignition coil, which one do you recommend Tahoe 5.3 2007

    I used a Prins VSI with Valve Care. I have a great workshop that knows a lot about LPG systems. They had already removed all the injectors and tested the rail on the test bench and they inject perfectly. What initially prompted me to change the spark plugs, ignition coils and cables was that I...
  13. DJPoertsch

    I want to replace my ignition coil, which one do you recommend Tahoe 5.3 2007

    Hallo friends. I was replacing now the Spark Plugs and the wires also the coils. But if you can read as follow, i don't think my problem would be coming from the ignition. Hello my friends from the forum. I currently have a problem that I can't quite figure out. It manifests itself as follows...
  14. DJPoertsch

    Under load there is a brief loss of power which sounds like cylinder deactivation.

    Hello my friends from the forum. I currently have a problem that I can't quite figure out. It manifests itself as follows. When I have to drive up a hill and I accelerate my Tahoe and then hold the accelerator pedal, I hear the engine for about 3 seconds, as if the cylinder deactivation is...
  15. DJPoertsch

    I want to replace my ignition coil, which one do you recommend Tahoe 5.3 2007

    Hello everyone. Since my topic is still topical and I probably have a defective coil here, I wanted to attach a stamp again. What do you think of the NGK 49471 Performance Ignition Coils? Can you also recommend them? At least they are almost 20 euros cheaper than GM. Thanks Markus
  16. DJPoertsch

    I cannot learn the Schrader 21507 TPMS sensor in the Tahoe 2007

    Thanks for your answer. I used the same tool as you. But unfortunately, this tool didn't work. It wasn't until I bought the Autel TS508 Maxitpms that I was able to wake up all the sensors and then save them via OBD2. I think the Schrader 21507 are absolutely worth the money. Because I often...
  17. DJPoertsch

    I cannot learn the Schrader 21507 TPMS sensor in the Tahoe 2007

    Like I said, Amazon isn't always reliable. Contrary to the information from Amazon, the Schrader 21507 are perfect for my vehicle. You just can't easily teach them with the China Tester. I used the ****-TPMS TS508 for this. They had to be woken up and the ID#S saved into the ECU via OBD. All...
  18. DJPoertsch

    I cannot learn the Schrader 21507 TPMS sensor in the Tahoe 2007

    Hello dear friends here in the forum. Today I can share with you my solution to my Schrader 21507 sensor problem. I bought the MAXITPMS programming device TS508 from Autel. Apparently my sensors 1. weren't awaked and 2. The ID wasn't stored in the ECU. With this device, it was super easy...
  19. DJPoertsch

    I cannot learn the Schrader 21507 TPMS sensor in the Tahoe 2007

    I have been advised by many users that Schrader TPMS sensors are better than the cheap ones from Amazon and eBay, which is why I bought 8 sensors to replace my winter and summer tires. When ordering, I checked very carefully whether they were approved for my vehicle, I looked at the year of...
  20. DJPoertsch

    I cannot learn the Schrader 21507 TPMS sensor in the Tahoe 2007

    That's also the reason why I registered here in this forum, because I get great information and help from you and from you too, so that I don't make any mistakes and I also really enjoy exchanging ideas, because in Germany the US car forum isn't quite as big as it is here and that's why I'm...
  21. DJPoertsch

    I cannot learn the Schrader 21507 TPMS sensor in the Tahoe 2007

    Unfortunately, I order from Germany and have to rely a lot on the specifications here. Amazon is not the place where I like to buy spare parts. Especially since many fakes are sold. I have now sent a message directly to Schrader asking for clarification. Because somehow you have to be able to...
  22. DJPoertsch

    I cannot learn the Schrader 21507 TPMS sensor in the Tahoe 2007

    Amzon is not a reliable source when it comes to defining cars. I was on the website of TPMS.com and there is my Tahoe listed. See pictures
  23. DJPoertsch

    I cannot learn the Schrader 21507 TPMS sensor in the Tahoe 2007

    As I answered above, I have this tool lying around in the car. I also put in new batteries. No matter where I put the nose of the tool down, I don't get a honk signal. Not even when I deflate the tire. ‍♂️
  24. DJPoertsch

    I cannot learn the Schrader 21507 TPMS sensor in the Tahoe 2007

    I tried the sensors with the same tester as you described to me. Nothing works. I also pressed the relearn button and deflated. That didn't work either. ‍♂️
  25. DJPoertsch

    I cannot learn the Schrader 21507 TPMS sensor in the Tahoe 2007

    Hello dear community. I bought new TPMS sensors from Schrader model 21507 for my Tahoe through Rock Auto. In the past, I always had some cheap ones from Amazon or from China. Either the batteries were empty after 1 year, or, as is currently the case, the entire sensor unit was simply lying in...

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