2024 Chevrolet Silverado 2500: sudden loss of power

Filed Apr 15, 2026 · Engine · KY

On or about March 14, 2026 vehicle in question stopped working, losing all power and gave a message that the vehicle was over heating and to turn off immediately. A large amount of steam emitted through the coolant reservoir that was a mixture of oil and coolant. Vehicle was towed to a manufacturer service location. The oil/coolant system ruptured damaging the radiator, thermostat, hoses and related parts. Vehicle with low mileage/hours was consuming engine oil at what one would consider a greater rate. ( 1 quart every other day). Our organization is aware that the diesel model of this truck had a recall for a oil/cooling system issue and we believe the same liability may lay with the gas version. Mileage was approximately 13,000 at time of breakdown.

Filed Mar 16, 2026 · Engine, Steering · WA

My 2024 Chevrolet Silverado 2500HD Bison ZR2 (VIN [XXX] ) suddenly lost all power steering, acceleration, and propulsion while driving my children to school at approximately 8:00 AM on March 16, 2026. The truck came to a complete stop with no warning lights or prior indication. This matches the exact ‘critical issue with the engine and transmission system’ alert I received from OnStar Advanced Diagnostics the same morning. Steering was completely unresponsive and I had no acceleration. My children were passengers — this was extremely dangerous. I have not driven the vehicle since and have requested towing to the dealer. Please investigate under any open probes into 2024 Silverado HD power-loss and steering failures. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Mar 4, 2026 · Transmission · TN

While accelerating to merge onto the highway, the transmission attempted a shift twice and could not complete the shift. That process causes an aggressive deceleration with each shift attempt. It then slowed, turned on the check engine light and displayed "Reduced Power Mode" - i.e. went into limp mode. The dealer pulled code P0747. The repair is a full transmission rebuild. I did not experience wheel lock up like other people have, but this is the same problem that has been heavily documented.

Filed Jul 21, 2025 · Transmission · TN

My truck had approximately 55,000 miles on it when the incident happened. I pulled out of a store and began going down the road and the rear wheels locked up slamming everything forward and the truck and leaving us almost rear ended. The truck was stuck in one gear after breaking the tires free with check engine lights flashing and the dash saying reduced power. It has since been at the dealership for 3 months waiting on a valve body with no end in sight. There is apparently a national back order on these faulty parts because of how common this high speed rear wheel lockup is so I am left without a vehicle or an end in sight.

Filed May 14, 2025 · Engine, Transmission · TX

The truck went to the dealer for recalls on March 21, 2025. The Truck is still within the bumper-to-bumper warranty. Recalls consisted of tailgate fix, TCM & ECM updates. The truck was returned to me approximately a week later. I noticed a significant loss of power. I took the truck back to the dealer and told them about the issue. They had it another 2 days and returned it to me, saying there was nothing wrong. Approximately a week later, I was driving down the road and the check engine light appeared on the gauge cluster. I immediately drove the truck to the dealer, and the DTCs were emissions-related. The service advisor, Jeff, told me to keep driving the truck, and it might go away. I drove the truck home, 20 mins away from the dealer, and as I pulled into my driveway, a message on the gauge cluster said, "Add engine oil." I notified the Dealer of the issue immediately. The next morning, I added a gallon of oil, and there were still no signs of oil on the dipstick. At that time, I noticed there was no coolant in the reservoir, but engine oil residue, and a collapsed upper radiator hose. The truck was towed to the dealer later that day. After inspection, the dealer said the oil cooler had failed. They sent me the service bulletin, but that bulletin only says, "oil and coolant mix," nothing about the disappearance of the fluid, and no explanation of the emissions codes. The dealer and GM's corporate office are refusing the share the diagnostic data on how they have concluded that the oil cooler has failed. Their solution is to replace the oil cooler and see what happens. This truck has 1000 miles left on the warranty, and the parts/procedures expire at the end of the bumper-to-bumper warranty. Recap: GM will not share diagnostic data, and they are refusing to extend coverage, yet their remedy is to experiment with my $70,000 truck, and the moment this truck is out of warranty, they are going to wash their hands of it. That is not acceptable.

Filed Mar 3, 2025 · Engine, Fuel system · PA

Complete engine and emission fail while driving. Complete loss of power. Created a serious safety issue while driving due to other traffic and inability to move vehicle from road side to safe area. Problem was confirmed by mechanic. Contact to GMC resulted in no response. Mechanic has reported numerous other GMC trucks with the same issue. Check engine light came on shortly before and then went off again. Contact was made with dealer as well as GMC directly regarding the issue.

Filed Jun 9, 2024 · Brakes, Electrical · KY

Charging system failed The system failed with no warning, we were traveling on a country curvy road and about to descend a grade. With the charging system failure, the truck lost power to brakes and steering. It's at the dealer, being inspected etc. No warning lights or message until the failure occured, then a battery light appeared and a charging system failed message.