One is the sensor (I’m guessing) when I start the car and then take off immediately after starting. 'The traverse has two peculiar issues with the transmission. 'sometimes qhen you go from park to drive it takes 30 seconds then slams into drive' For this brief time (a few seconds) the transmission acts as if it is In neutral and vehicle can move if on incline and foot off brake.' 'Occasionally when shifting from park to drive, transmission does not immediately engage. Have been getting 29 mpg on trips, fantastic. makes you feel like do I have a lemon, other wise great vehicle I love. Been problematic determining the cause, Chevrolet is in process of getting parts to change out torque converter, hope it fixes it. 'Vehicle shudders when shifting but is not consistent, does it 80+% of the time.

The fuild was changed and the transmission computer reprogrammed about 18 months ago and have not had any reoccurences since.' A Technical Service Bulletin was eventually released to all dealerships. The early models had the incorrect transmission fluid added at the manufacturer. This was a common issue with the newer 9 speed transmissions in the vehicles and early assembly dates. 'From the beginning the transmission would shudder during low speed gear shifts. Even after transmission rebuild, shifting is still a bit jerky especially from a stop.' '9-spd tranny has never shifted smoothly, either up or down. I'll never buy another GM veh, I have been a GM guy all my life, till now.' It stumbled and shut off once, now warning, no codes. CHEVROLET can't seem to be able to recreate the problem so no action is ever taken. 'The car has had shifting issues from the first month we got it. Replacing the transmission fluid has resolved the issue.' 'Rough shifting in lower gears when accelerating and it was mostly when in the 2wd mode. 'Part of the recommend fix for transmission slippage.' I had to turn it on, put it in drive, put it in park, turn it off, and repeat until the message disappeared.' I was not able to lock the car when this message was given, although I could still drive the car. 'I would put the car in Park and turn off the engine, but the car would give me an error message that the car was not in park. 'The shift linkage needed to be replaced because it had to be forced to go into park.' Second appears related to software, doesn't know it's in park.' 'Appears to slip into Neutral sometimes when driving. (2018 Chevrolet Traverse High Country 3.6-L V6) 'Would not accept park, kept chiming, had to keep jerking shift stick until it stopped.' I remain very pleased with the second generation Chevrolet Traverse.' First year of new models often have growing pains. A rental car was provided for the duration and the costs we covered by warranty. The vehicle spent almost 6 weeks at the dealership in order to obtain a replacement part. This prevented the vehicle from being powered off competely. 'the shifter assembly was defective and would not sense that the vehicle was in Park. Had to take it to the dealer to have the selector assembly replaced.' I had to keep shifting back and forth and messing with the selector to get the alarm to go off. It was very difficult to get the alarm to go off. In other words, the system did not recognize that the vehicle was in park. 'When you stopped the vehicle and shifted into Park, the shit to park warning indicator came on and would not go off.

Chevy traverse transmission problems