RyGuyFD

Update: I hope this can at least help anyone who is also experiencing this transmission issue. Brought the truck back to the dealership because the trans is still "slam shifting" and was starting to hunt for gears and "slam" into gear on the acceleration as well as the downshift when stopping. Current ticket that I have states that the truck threw 3 codes: P2227- Barometric Sensor (BARO) Range/Performance Problem, P2228- BARO Sensor/Circuit Low and P0113- Intake Air Temperature Sensor (IAT). So, the mass air flow sensor, intake air temperature sensor and barometric sensor replaced. At no time did any idiot lights illuminate my dash board which apparently these codes are supposed to activate. So, after getting off of the phone with the Sales Manager and GM Corporate I received a call back from the service writer who told me the truck was fixed and ready for pickup. I should probably mention that two hours prior he called me and stated that they were trying to find the part and did not know when the truck would be done but that it would be fixed within the week. I asked at what point they are going to admit that they sold me a truck that is not sound, considering that all of this is occurring with under 8k miles on the clock, and the response was exactly what could be expected. The truck is still not shifting correctly (I was given a 17 1500 z71 to drive while the truck was in the shop and it didn't seem to shift at all like mine), I am now experiencing a sound that I can only compare to an exhaust header leak from the left side under load at less than 2k rpm and the damn cab rattles over every bump/each time a door is closed. Like I said, I hope that at least this helps with anyone trying to research/confirm an issue that GM seems to know about...the lawyer that I spoke to today so that they have had a lot of cases regarding Silverado Transmissions...

Hey Snowman, Here is the link for gm: http://www.gm.com/lemon-law.html. I gave them all the info as to what was going on with the vehicle, current mileage, purchase/service/pickup dates, vin number and invoice repair number from the dealership. They were very prompt in responding, stated that they were "sending the issue up to a senior advisor" and I was contacted within 3 days. From what I can deduce between the dealership not giving me any flak about the issue, and corporate being so quick to respond, I have a feeling that they are aware of this issue. The truck is going back in for service next week and I'm anticipating that they will have another 1500 for me to take home so I'm very curious to see if the borrowed truck from the dealer will drive any better. Hope this helps.

Thanks everyone for the insights! At least this reinforces some of what I have read in regards to this not being an isolated issue. I mean, I understand that between the AFM and the 6 speed the truck is "shifty" trying to get you the best fuel economy but you guys are absolutely right in that it seems a little excessive. I opened a ticket with GM corporate in regards to the issues I'm having so that at least it's documented properly. They were actually extremely receptive to my concerns and promptly contacted me to find out how we could go about remedying the issue. I do have to say that I am extremely disappointed with the stock suspension and tires. The truck does not like to hold a line without excessive body roll and the tires just will not hold the road. Yes, the new Rancho QuickLift kit with RS90000 shocks should remedy this, but I will say that both of my 150s stock were sprung much heavier and felt much more sound. I got out of Ford because of the mountain of issues that I ran into with the Triton series motors, and figured I'd go to something with one of the best small block V8s around, but my goal keeping this truck until it died just doesn't seem as attainable with trans issues so early in its life.

Hey All, I purchased my first Chevy pickup, a 2017 1500 LT Allstar 4x4 5.3 and I am having some transmission issues. My truck bangs into gear on the downshift during moderate to hard braking from a short acceleration (city type driving). I brought the truck back to the dealership with 7000 miles on the clock to have the trans assessed and repaired. The tech that worked on the truck wrote on the ticket "Test drove and confirmed customers concern found vehicle bangs into gears when slowing down. Called GM technical assistance and was instructed to replace control solenoid valve assembly. Removed and replaced transmission control module programmed and test drove-ok at this time." I've had the truck back for two days, put about 200+ miles on it and the issue has resurfaced. Has anyone else experienced similar issues with hard downshifts in stop and go traffic, and if so has anything been done to remedy? Any help is greatly appreciated.