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    2017 gmc sierra

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2017gmcsierraslt's Achievements


Enthusiast (2/11)



  1. How many miles and what repairs have you had to do. Have read the 2017 is the problem year curious to hear from owners of these rigs. 6.2 liter here 8 speed.
  2. Thanks for the reply blbstack. I was considering doing upgrades to the transmission but the fluid change stopped the shudder and is shifting much smoother. The 1st to 2nd clunk is rare now and seems to be normal.
  3. Thanks for that. Just missed the time frame for the powertrain warranty.
  4. Well, Ive been driving one of the service vans last 10 years or so. Finally able to drive my sierra now.
  5. Heck doesn't sound too bad to me. My dealer just charged $491.00 to do the trans flush, nothing else on my 2017 6.2 with 8500 miles on it. From reading it should have been done as a tsb as I had it done because of the shudder and vibration.
  6. Thanks for the reply. I am using the 0w20 oil and I didn't know about the 2 different oil filters. Is it the low or high pressure bypass we are supposed to use for the 6.2 liter? Thanks again
  7. Forgot to mention the transmission flush has stopped the shudder for now.
  8. I have a 2017 6.2L 8l90 4wd with max tow. I experienced the clunking when taking off and stopping sometimes lurching forward. They said that was normal operation as well and that it was learning my driving and would smooth out. The clunking seemed to get a little worse then developed the shudder. Out of warranty so I had to pay the dealer $491.44 to do the transmission flush. Was hoping the clunking would stop but it didn't. I have read over a hundred posts about transmission failure. Wanted to ask how everyone else's 2017 truck is holding up with the 6.2l and 8speed tranny. First step would be to pay for the transmission software update with a flash and relearn on the tranny. Sorry for the long post.
  9. Hi, I also have the 6.2L and the 8l90 with max tow. My tranny has clunked from the day it arrived from factory special order. Wondering if you got the new transmission and if you are happy with it or if it's doing the same thing.
  10. I have the 2017 sierra slt dbl cab with 6.2 liter 8 speed. I am averaging about 17.5 in town stop and go and the best I have got on the highway is 25 mi to the gallon.
  11. No, I did not take it to the dealer yet. I read up on it and found some people say it clears after 8 drive cycles, mine has yet to clear several hundred miles later. The lady I talked to at Range was really nice and tried to help but bottom line they know this is a problem and don't have a solution yet. My steering does not seem affected so I am not too worried and will have them clear it next oil change if they can. But am not going to use Range until it works with no codes or check engine lights.
  12. I have a 2017 GMC Sierra 6.2 liter 8 speed. I bought the newest version of range afm disabler from the range company (they said this would ensure the most recent version). I bought it plugged it in and worked fine for the initial road trip, second time I started trucK I had a check engine light and threw a "steering assist reduced" code. I also got emails from onstar saying to take truck to dealer. I called and did as Range said plug unit in with engine running and the check engine light went out but message still there. Now If I leave it plugged in about every 8 days engine light comes back on, sending unit back its not worth the hassle.
  13. Well I got my Range AFM disabler in the mail and the first time I drove it worked fine, loved being able to keep it in V8 mode. Second time, got in started truck and got a check engine light and "steering assist reduced" code, later that day I got an email from onstar saying my truck is having engine/transmission problems and to take it to dealer. Called Range and they said it's a known problem and even if I clear the code by plugging it in while the engine is running the code would come back within so many drive cycles. They have been testing but have no fixes or updated firmware for this problem as of yet. Going to have to look for other options, would love to find a tuner that would just turn off afm and not change anything else so warranty isn't voided.
  14. I just ordered mine today and also an OBD switch. As soon as I get it I will post up how it performs.
  15. I was hoping by installing the inline OBD switch it would easier to remember if I mounted the switch insight. I dont know much about the BB Tune, but am definitely going to read up on it.
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