2024 Chevrolet Silverado Fuel System Problems

The DEF tank failed making the exhaust system malfunction. This puts the vehicle in limp mode.

Fuel rail pressure low during engine cranking

DEF System will count miles down saying it is going to put you into limp mode while towing, when there is 3/4 plus DEF fluid in the tank. This caused me several times speed slow downs under 65 to try to make it to a safe place to add under 2 gallons to fill a 5 plus gallon tank on 70 to 80 mph highways a few times at dusk and night with limited off off travel lane access! This is telling you it will put your vehicle in limp mode! Again causing a dangerous situation! I very much feared for my well-being along a dark road with cars going 70 plus while I was trying to add DEF to a 3/4 full tank only taking around 2 gallons!!

The contact owns a 2024 Chevrolet Silverado 1500. The contact stated that while driving at various speeds on several occasions, the vehicle stalled. There was no warning light illuminated. The contact was able to pull over to the side of the road, and the vehicle was restarted. The vehicle was taken to the dealer, where the fuel pump and the fuel pump module were replaced; however, the failure worsened. The contact stated that while driving at 45 MPH, the vehicle stalled. The contact was able to pull over to the side road. The vehicle failed to restart and was towed to the dealer. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 7,500.

Vehicle does not indicate proper DEF level. Vehicle has stated several times that it is out of DEF but is not. The most recent time the vehicle was at a dealer and was noted as normal operation. Driving up to going the dealer: vehicle displayed message “DEF empty refill now vehicle speed restricted to 65mph”with a 500 mile count down. Vehicle was driven 489 miles of the 500 miles. Vehicle was taken to a dealer. Dealer confirmed that vehicle was not out of DEF, vehicle was at 40% DEF capacity (~2 gallons of fluid in a 5 gallon tank). Dealer noted that this was normal operation. This is not safe, the DEF system isn’t accurately reporting level. In other situations it hasn’t recognize DEF fills. This can potentially lead to the vehicle severely restricting speed or not allowing the motor to restart creating unsafe conditions for the passengers and other vehicles on the road way. Vehicle was under warranty at the time of the issues. Vehicle is currently just under 37,000 miles.

The contact owns a 2024 Chevrolet Silverado 1500. The contact stated while driving 55 MPH on a highway entrance ramp, the vehicle failed to accelerate upon depression of the accelerator pedal. The contact stated that the "Reduce Acceleration Drive with Care" message was displayed on the instrument panel. The dealer was notified of the failure and the contact was instructed to take the vehicle in for a diagnostic test. Once the contact arrived at the dealer, 13 diagnostic trouble codes were retrieved; however, the dealer could not duplicate the failure. An appointment was scheduled with the same dealer, and it was discovered that the diesel particulate filter was clogged with soot, causing the vehicle to enter LIMP Mode. Despite this discovery, the dealer was unable to duplicate the failure after the filter was unclogged. The vehicle resumed normal operation. The manufacturer was notified of the failure but offered no assistance. The vehicle was not repaired. The failure mileage was 11,267.

Vehicle cut off while driving down the highway and wouldn’t restart. Had to be towed to dealer with a faulty fuel pump control module

The contact owns a 2024 Chevrolet Silverado 1500. The contact stated while driving at an undisclosed, the vehicle stalled, and the check engine warning light illuminated. In addition, the contact stated that the heavy fuel consumption warning light was illuminated. The vehicle was taken to the dealer; however, the failure was not duplicated. The contact stated that the fault code had been reset. The failure reoccurred and the check engine warning light illuminated. The contact stated that there was a burning fuel odor around the exterior of the vehicle. The contact stated that the failure was persistent; however, the vehicle was taken to the dealer several times due to the failure however, the failure was not duplicated. In addition, the contact stated there was an abnormal squeaking sound coming from the front of the vehicle. The vehicle was not diagnosed or repaired by an independent mechanic or the dealer. The manufacturer was not made aware of the failure. The failure mileage was approximately 200.