Table 1 shows one common power train related problems of the 2026 Chevrolet Tahoe.
| Problem Category | Number of Problems |
|---|---|
| Power Train problems |
Driving on the highway the engine failed at highway speeds and the Tahoe experienced a complete shutdown, we could not restart the vehicle nor shift to neutral. We had the vehicle towed and was told by the dealer that it needs a engine replacement at 14,000 miles.
While driving down i35 south of wellington KS in our new 2026 chevy Tahoe we experienced a vehicle shift to neutral and no transmission correction available. Coasted to ditch saw “service transmission” notice and so turned off and on engine . Went to derby KS and davis moore chevy in wichita where staff removed the warning service notice on driver info and we continued to molle chevy in blue springs mo. Where they did diagnostic and only showed ambient air fault!! this is scary! we had no transmission and had to get off road safely! please let public and our dealers know and recall all vehicles with this problem. We are afraid to drive this new 3,000 mile chevy Tahoe.
While driving the vehicle at highway speeds the vehicle starts to lurch or randomly lose power. Eventually, within a few minutes, the lurching gets worse and the check engine light starts flashing. In a gm vehicle, a flashing check engine light is critical engine failure. After pulling the vehicle to the side of the road, the check engine light stops flashing and stays on constantly. After about 10-15 minutes, the check engine light turns off completely. The gm dealership can read the history and says it's p0300 error code for general engine misfire in cylinder #6. Gm warranty refuses to fix anything because the light isn't on when the car comes into the dealership. The car has been to two different dealerships, with both of them telling me it has the same error code. Gm customer service told me without the check engine light being on when the vehicle is brought into the dealership, they would not be able to help me. This is being told to me even though everyone agrees that the check engine light has been on. I was told by gm to continue to drive the vehicle. It has been into the shop 4 times since January for the same issue. This is not safe as the engine has suffered a critical issue. I don't feel safe driving the vehicle. My gm customer service case is 110460594.