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rviscuso

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  1. I had the transmission serviced today; new filter and six quarts. The technician let me in the shop while the pan was down. The old filter inlet looked clean. The magnet had a collection of normal clutch wear material. All is well. I guess I'm getting a bit sensitive in my older years. He said to come back in a few years and get the fluid changed.
  2. I brought the truck in for oil change and transmission diagnostic. The short answer from the dealer is working as designed. The tech, 30 years experience with transmissions, drove the truck before the oil change then he requested we both go for a test drive afterwards. I pointed out when AFM kicked in/out and the rpm's moved; I could see the smile on his face. Yes that is normal. He went on to explain the balancing act between engine/transmission for optimum fuel combustion. These transmissions are constantly adjusting. I have faith that there was no BS here. No codes were present. His parting words, again no BS, was that my truck drove better than 90% of the trucks he sees in the shop. I will add here that they waived the $199 tranny diagnostic fee. I have 43,000 miles on the TC replacement. With two months left on the warranty, I will bring the truck in for a transmission pan drop fluid/filter change. If there is excessive metal then we will discuss what action to take.
  3. I found this on Sonnax. Is this what you referring to? https://www.sonnax.com/tech_resources/845-6l80-6l90-transmission-tech-advisory-consider-an-updated-converter-in-your-next-rebuild
  4. newdude, I like the idea of a data recorder. Thanks! I have an oil change coming up so will double up on that visit.
  5. Thanks guys. I purchased the truck on July 2, 2017. With less than 52,000 miles and less than five years have gone by the drivetrain is still under warranty. How do I get what so far has been a reluctant dealer to take action?
  6. 2017 Silverado LT 5.3 4X4 6speed transmission 51,000 miles When I first bought the truck the transmission suffered from severe bucking or shudder under light load. GM calls it chuggle. The cause was "intermittent tcc delamination causing scoring on fluid pump". They replaced the torque converter, cover housing and pump cover along with a flush. This was at 10,000 miles. That seemed to solve the chugging problem. For the last year or so I have noticed that the torque converter unlocks and locks frequently at freeway speeds. When it locks, following an unlock, there is a noticeable lurching forward. This is not neck snapping but is definitely noticeable. This lurching motion also occurs when upshifting 4/5 or 5/6. While driving at freeway speeds (65 70mph) when I slightly let off the accelerator the rpm's rise about 200 then settle down. If I should slightly press down the same thing happens. However, when driving at a steady freeway speed, and holding steady on the throttle, on level ground I can feel this unlock/lock along with seeing the engine speed move up then settle down. If I engage cruise control on level ground it is worse and occurs more often. But, with cruise control on and there is a slight road incline there is no unlock or downshift. When I press hard on the throttle then it downshifts and accelerates fine. Locking/unlocking and lurching; I do not recall the transmission behaving like this in the early years. The dealer says if it doesn't throw a code then it is operating normally. I can see that there are times when it should unlock such as when under load, but should it be this happening this frequently and be so noticeable? Or maybe I am being too sensitive? Anybody experience the same thing? Is this normal transmission behavior?
  7. I went back to the dealer to have them take another look. The answer is that my truck does not have a hard drive which would store the music index. With the key off and after a few hours or so memory is lost for the music index. The next time the key is turned on the index has to be reestablished. The other vehicles I mentioned have hard drives and therefore do not exhibit this behavior.
  8. The dealer upgraded the software. For the first week or two all was well then the problem returned. I may have discovered a cause. I think that bluetooth from my phone may be having an effect. I noticed that with bluetooth turned off on my phone then start the engine that the problem does not occur. My phone is Samsung Android. Any thoughts?
  9. Thanks for the advice guys. I did try a Patriot 128GB NTFS with no improvement. The 256 FAT32 continues to hourglass from time to time. I have an appointment with the dealer for this Tuesday. Stay tuned. My brother has a 2015 Sierra which does not exhibit any issues with his flash drives; 128GB FAT32. And, my 2017 Stingray does not have any issues using my other Patriot 256GB NTSF. Different software? Strange
  10. Well that was short lived. The erratic behavior has returned. This past week it reverted back to loosing the 'folder view'. When turning on the key it did not continnue with playing the previous days song but rather went into random mode. Apparently the index was lost as folder view was not available. I pulled the USB then reinstalled then waited a half hour or so as it hourglassed which I believe is the index process. I spoke with the dealer. His suggestion was to only use a flash drive as new and not one that has had song deletions. There may be a software upgrade other than the automatic one. I will bring the truck in next week for a software check/upgrade.
  11. There are 16,933 files and 1,430 folders, 122GB. I replaced the 256GB with a 128GB NTFS. The 128 wasn't quite big enough so I had to remove a few albums prior to copying. There was no improvement. I reformatted the 256GB to FAT32 and guess what, that seems to have solved the problem. It was questionable the first day; indexing took maybe 20-30 minutes but then folder view was not always available. Sometimes it would show 'unknown' and slow to recognize the song. However, for the past week and maybe a dozen or so on/off cycles it has been consistent in picking up where it left off. It does not start up instantly; it typically shows 'unknown' but within a few seconds or so recognizes and displays the song. So for now I will consider it a success.
  12. I too had been looking and recently found this Gogear storage CNSLPLUS-BLA which fit perfectly on my 2017 LT. http://www.gogearmobile.com/organizers.html
  13. As the title suggests the USB music is exhibiting erratic behavior. Sometimes folder view is not available (it is not indexing as the flash drive was not removed). When returning to vehicle and turning on key, the music played will typically be what I was last listening to; sometimes it will randomly play something else. Sometimes it shows “No Media Found” then after a period of time when it does recognize the USB it shows “No Artist Info”. The song title will display but no artist or album title. When this happens there is no sound and adjusting the volume control has no effect. If I press radio the sound works, then pressing media and now the sound works and the song title, artist and album display correctly. 2017 Silverado LT. The USB is Patriot Slate 3.1 256GB NTFS. I have another one which works fine in a 2017 Corvette. The owner’s manual page 203 states USB format FAT16/32 or ex FAT is recognized but NTFS is not. Page 201 states USB 2.0. However, page 27 of the Infotainment manual states that it supports file systems FAT32 and NTFS. So, what to believe? What do you guys think? Anyone have the same or similar issues?
  14. Thanks for the feedback. Looks like one vote for sink and one no sink. I will have to decide if it is worth pursuing. Or if I am being too (butt) sensitive.
  15. If you need a chiropractor I'll cover the first visit.
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