2025 Chevrolet Tahoe Engine Problems

Your engine shut down without warning while driving, causing your steering wheel to lock and leaving you stranded in the road with no way to move the vehicle to safety. The engine won't restart, though the dashboard and radio still work. Your dealership and GM identified a known issue with the 3.0L Duramax diesel engine and are replacing the motor, but the process has taken weeks with unclear timelines for completion. The repair will involve a complete engine replacement.

Your vehicle suddenly downshifted and shut off while driving on the highway and wouldn't restart. The dashboard showed a message saying 'conditions not correct for shift' and you couldn't shift into neutral, requiring the car to be towed. This issue likely involves the transmission control system or engine management computer not communicating properly.

Your engine's thrust bearing failed completely, causing metal debris to scatter into the transmission bell housing and torque converter. You'll hear loud metal clanging noises from the bell housing area, but no warning lights will appear before failure. GM is aware of this issue but is handling it on a case-by-case basis at dealerships rather than issuing a recall. The engine will need to be replaced.

Your engine has completely failed and is no longer running. This will require a full engine inspection or replacement to determine the cause and restore your vehicle to working condition.

Your engine shut down completely while accelerating after a border checkpoint stop, and wouldn't restart initially—a "check transmission" warning appeared on the dashboard. After several minutes, the engine started but had no power and made loud knocking and squealing sounds from the engine compartment, along with multiple warning lights. The dealership found trouble code P0016 (camshaft/crankshaft timing issue) and metal debris in the oil, suggesting internal engine damage that will require diagnosis and likely major engine repair or replacement.

Your engine's crankshaft has excessive movement due to a failed thrust bearing, and your dealer has grounded the vehicle for repair. You've been without your car since January 20, 2026, and despite receiving a couple of text messages from the service manager, you haven't been given a timeline for when the vehicle will be ready. The repair will likely involve replacing the faulty thrust bearing to restore proper crankshaft support and engine operation.

Your check engine light started flashing and the vehicle entered limp mode, prompting a safety warning to pull over. After the dealer reprogrammed the engine on 4/25, the problem continued—your car keeps losing power while driving. The dealer has scheduled another appointment to investigate the issue.

Your check engine light came on after about 680 miles of driving. The dealership diagnosed a faulty transmission valve body, which is a known issue with this transmission since 2019. The required replacement part is currently on back order with no estimated delivery date from GM.