Recent content by Litsnsirn

  1. L

    21 Yukon XL Service TPMS System?

    I agree, it’s just one of the replies above told me to disconnect the positive. I am a telecom engineer and i got into that, originally, by being an emergency vehicle upfitter. The first thing we did when a car was about to get worked on was disconnect the negative terminal.
  2. L

    21 Yukon XL Service TPMS System?

    After much procrastination, i disconnected the negative terminal, because I couldn’t figure out how to lift the positive terminal off after loosening it. I let it sit a half hour, and after reconnecting the service TPMs popped up immediately and three of the four tires had no response the...
  3. L

    21 Yukon XL Service TPMS System?

    Is there a way to read the voltage of the sensors?
  4. L

    21 Yukon XL Service TPMS System?

    Two days ago the service TPMS message came up on my Yukon and the front tire pressures weren’t displayed any longer. Today I tried doing the TPMS relearn and I wasn’t able to get the front sensors to beep. After some driving around, the rears stopped reporting so all four tires aren’t showing...
  5. L

    Do any of the video on dash screen adapters work on these trucks?

    Mirroring the phone was what I was thinking. I don’t have data turned on for the car anymore, do you need that or can you hotspot it off your phone?
  6. L

    Do any of the video on dash screen adapters work on these trucks?

    I was wondering if any of the aftermarket adapters to supposedly allow you to watch video on the dash screen of a 21 Denali, actually work? Are there any other mods you can make for that? Also, is there a way to get rid of the ‘feature’ that keeps you safe by not allowing you to navigate file...
  7. L

    6.2 recall question?

    It’s a 21
  8. L

    CarPlay audio cutting out (revisited)

    My 21 Denali does this with the phone confected by wireless and I sporadically get the sd card removed message and the phone disconnects when it is plugged in, by either the port in the front of the console or under the armrest. Is there a fix for this yet?
  9. L

    6.2 recall question?

    Are all 6.2’s from 21+ getting looked at? I have received a postcard and letters from several law firms looking to represent me, but at my last oil change, I noticed that the dealer put 0w20 in, so I asked if my truck was under the recall inspection and oil spec change, and he punched my vin in...
  10. L

    Wheel speed sensor erratic?

    Well, I have an update. Dealer said that they think the hub is failing and generating debris, which is damaging the sensor. They want to replace the sensor i just changed and the hub. They gave me my car back while they order the parts.
  11. L

    Wheel speed sensor erratic?

    I’m kind of at a loss as to what I am looking at, not knowing the sampling rate, etc…
  12. L

    Wheel speed sensor erratic?

    Then a couple of minutes later, here’s the bad sensor again:
  13. L

    Wheel speed sensor erratic?

    Here’s the bad sensor:
  14. L

    Wheel speed sensor erratic?

    This first one is an example of what the graph looks like on a good sensor:
  15. L

    Wheel speed sensor erratic?

    I switched over to my cheap Bluetooth code reader because the sensor outputs seem to be in a format that I can read and all four wheel speeds seem to be mostly the same.
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