Transmission rebuild or replacement, torque converter, clutch replacement.
What Owners Say
"The truck started jerking very hard"Kenneth W., OH (2018 GMC Canyon SLE 3.6-L V6)
"I think it is all related in the transmission"Charles W., MD (2018 GMC Canyon SLT 3.6-L V6)
"Within first 500 miles above 46 mph truck generated a feeling of driving over a "washboard". Dealership played dumb until I returned with Technical Service Bulletin directing dealers to test for noise level with "picoscope". Mine supposedly did not generate sufficient noise to warrant replacing torque converter. So, per TSB they did a triple flush of tranny fluid. It did make a very modest change in sensation and noise, but certainly didn't fix it. Last I checked there were three class action lawsuits over this issue, over several GM platforms using this particular torque converter. There are several blogs with lots of people with same issue."Anonymous, FL (2018 GMC Canyon SLT 3.6-L V6)