In my humble opinion, if the trans is obviously not slipping when you drive it, maybe it doesn't need replacing. If you can't get any help from either dealership, and your stuck with it, drive on, and see what happens.
Thanks for the reply. I had my independent inspection done this morning and the only codes of any kind were the ones stored in the transmission control module. The codes were P0877 and P0989. I am working on decoding the RPO codes to determine whether this car has a Gen 1 or Gen 2 6T70 transmission, but if it's Gen 1 those codes would be consistent with failing pressure switches on the TEHCM. This could be fixed by replacing the pressure switches or at most the entire TEHCM, but hardly something severe enough to warrant rebuild / replace of the entire tranny. It is also consistent with the only symptom so far shown, which is delayed engagement. So I'm increasingly skeptical of the claim made by the original Chevy dealership and will be asking them to pass along the service invoice with the previous owner's name redacted.In my humble opinion, if the trans is obviously not slipping when you drive it, maybe it doesn't need replacing. If you can't get any help from either dealership, and your stuck with it, drive on, and see what happens.
Those 2 codes are consistent symptoms of the pressure discs in the valve body needing replacement. Member reubenswinks has an excellent tutorial here on the forum. May use the search feature at the top of this page. Search: '12+ 6-speed: P0989 Code. Cheap parts and a definite diy project.Thanks for the reply. I had my independent inspection done this morning and the only codes of any kind were the ones stored in the transmission control module. The codes were P0877 and P0989. I am working on decoding the RPO codes to determine whether this car has a Gen 1 or Gen 2 6T70 transmission, but if it's Gen 1 those codes would be consistent with failing pressure switches on the TEHCM. This could be fixed by replacing the pressure switches or at most the entire TEHCM, but hardly something severe enough to warrant rebuild / replace of the entire tranny. It is also consistent with the only symptom so far shown, which is delayed engagement. So I'm increasingly skeptical of the claim made by the original Chevy dealership and will be asking them to pass along the service invoice with the previous owner's name redacted.
The inspection also showed that the rear bumper support is completely rusted out on the passenger side. That is a safety concern in the event of a rear collision and rather surprising since dealerships are required by law to perform safety inspections on used cars in my state. One of the wiper blades was split, which is a non-issue as far as replacement cost, but it shows that the safety inspection at the dealership was beyond negligent. Other than that we found a few "buyer beware" typical wear items on the front end - my front sway bars are splitting open and the bushings are worn, and the steering rack is leaking will probably go in the next year. That's on me and I will be saving up for those repairs throughout this year.
In the meantime I am going to keep the information from today in my back pocket and see what they say at the Honda dealership tomorrow when they look at it. If they repair the bumper support and meet me halfway on the TEHCM pressure switch repair I think I'd call the issue resolved. I really love the car; the engine, brakes, and suspension are all spectacular for a car this size and the interior and Bose stereo are great. I hope the dealership will make it right.
when I bought my 2013 Chevrolet Impala LTZ from a car dealer in Sacramento I went and took it to jiffy lube had a full oil change drove it back home to Nevada and made one more trip to Sacramento with no promblem. On my way back to Sacramento on my third trip I wanted to check the trasmission fluid to make sure it was good. I had no problems driving back and forth those two times ran like a champ. So when I went to check the tranny oil it was fine. I noticed a screw driver that was in the engine so I pulled it out. That was the end of having a good running car. I went to start the car and as I was putting it in reverse the car made a loud shiffitng sound and I noticed that where the cars shows you the R,N,D,1 didnt mark when I put it in reverse. It had no power. Had a friend come over to look at it. I guess the screwdriver was pressed up against the trasmission control module plug the one that runs from the computer to the trasmission to give it a better connection. Because the plug has a lock on it that was broken. I was so mad I called the dealer who sold it to me and he told me to have it towed back to Sacramento that I could not afford I was so mad. He had just put another engine in the car like one day before I bought it so he had to connect the engine to the trasmission right so he put the screwdriver in there and sold me the car like that. So I came out the pocket $1000 just to have it fixed. It was giving me the same code so whey dont you check the plug and maybe it just that and not the trasmission going out. Good Luck.Thanks for the reply. I had my independent inspection done this morning and the only codes of any kind were the ones stored in the transmission control module. The codes were P0877 and P0989. I am working on decoding the RPO codes to determine whether this car has a Gen 1 or Gen 2 6T70 transmission, but if it's Gen 1 those codes would be consistent with failing pressure switches on the TEHCM. This could be fixed by replacing the pressure switches or at most the entire TEHCM, but hardly something severe enough to warrant rebuild / replace of the entire tranny. It is also consistent with the only symptom so far shown, which is delayed engagement. So I'm increasingly skeptical of the claim made by the original Chevy dealership and will be asking them to pass along the service invoice with the previous owner's name redacted.
The inspection also showed that the rear bumper support is completely rusted out on the passenger side. That is a safety concern in the event of a rear collision and rather surprising since dealerships are required by law to perform safety inspections on used cars in my state. One of the wiper blades was split, which is a non-issue as far as replacement cost, but it shows that the safety inspection at the dealership was beyond negligent. Other than that we found a few "buyer beware" typical wear items on the front end - my front sway bars are splitting open and the bushings are worn, and the steering rack is leaking will probably go in the next year. That's on me and I will be saving up for those repairs throughout this year.
In the meantime I am going to keep the information from today in my back pocket and see what they say at the Honda dealership tomorrow when they look at it. If they repair the bumper support and meet me halfway on the TEHCM pressure switch repair I think I'd call the issue resolved. I really love the car; the engine, brakes, and suspension are all spectacular for a car this size and the interior and Bose stereo are great. I hope the dealership will make it right.