Automatic Transmission Torque Converter problems of the 2017 GMC Canyon

Transmission experiences torque convertor shudder. With very hard shifts at 5 and 18 mph. Dealer complied with bulletin 18-na-355. Had improvement in shift for a while. Then hard shift return at 5 and 18 mph. During decelerations there would be a shudder. When using cruise control when reducing speed transmission would shudder. Return to dealer, when oil pan was removed found aluminum chips and one metal chip. Dealer replace with remanufactured transmission. Drove vehicle home. Then went out and drove the vehicle upon exiting drive way experience torque convertor slippage at around 12 mph with engine rpm going from 2000 to 4000. Continued to drive vehicle once torque convertor reengaged. Continued driving made couple of short trips in traffic continue to experience banging in drive train. I believe this vehicle puts my safety at risk.

This is 2nd $40,000 Canyon I've been taken for! 1st was 2016, and transmission would take off after flooring it, as it would just �lay down� and scared the wife so much, and wouldn't drive it! had to repurchase an 2017, with the 8 spd trans, and even worse! it shakes and shudders even after fluid flush, then new torque converter! then was told, there's nothing more gm can do for you!?? really? now gm is not responding to multiple calls! $43,000 truck really? never again, these vehicles should not be on the road! was promised to have this resolved this afternoon,10-28-19, and once again no return calls! will seek real council in am, as gm resolution is a joke! don't waste your time, go strait to qualified firm.

Tl- the contact owns a 2017 GMC Canyon. The contact stated that while driving at various speeds the vehicle would shutter and vibrate when pressing the fuel pedal before suddenly rapidly accelerating. The vehicle was taken to the local dealer key Chevrolet(32 key auto dr. White river jct, vt. ) who flushed the transmission and replaced the torque converter but the failures continued to occurred. The manufacturer was notified of the failures(case 9-5540993589). The failure mileage was 28,000. Jft.

Transmission began shifting hard. Before long whole truck rattled when shifting. Almost a grinding sound. Chevy diagnosed torque converter has gone bad. Back ordered for 2 weeks.

Torque converter fails at 12000 miles for many. There is a GMC notice out since 2016. Mine failed at 16000 miles and the one they replaced will likely fail again in another 16k miles. This is bad. I noticed it when I pressed on the accelerator and as I increased speed up to 45 mph. It rattled and rocked badly. The GMC repairman said, "yeap. . . . . Ever since 2016 all these damn torque converters have been failing in the Canyons and colorados because gm and chevy changed the size and strength of the metal used in order to reduce the weight of trhe vehicle. We will replace it, but I can assure you it will fail again and you'll have to bring it back to use for change out again. " wow. . . . What a bunch of crap.