2021 Chevrolet Suburban: won't start

Filed Jul 26, 2026 · Fuel system · VA

Pulled out in 4 lane traffic. Got almost to 55mph. Vehicle lost all power, slowed down and auto shifted to neutral, vehicle stopped and went to park. Vehicle would not start back nor transition to Neutral to remove from highways. 2021 suburban with just 35,000miles. Shut down a lane on a 55mph highway. Code P129F

Filed Apr 19, 2026 · Fuel system · WA

My 2021 Chevrolet Suburban experienced a sudden no start condition which required the vehicle to be towed for repair. A diagnostic inspection determined that both the fuel pump and the fuel pump control module had failed. I paid out of pocket for the full repair, including replacement of both components. Several months later, GM issued a safety recall for the fuel pump control module on this vehicle. I submitted a reimbursement request to GM. GM agreed to reimburse only the control module , but refused to reimburse the fuel pump, even though the pump failure was directly caused by the defective module that is now under recall. Federal recall reimbursement guidelines require manufacturers to reimburse the full cost of the remedy for the defect. In this case, the defective module caused the fuel pump to fail, making the pump replacement part of the necessary remedy. GM’s refusal to reimburse the full repair cost leaves me paying for damage caused by the recalled component. I am requesting the federal safety agency’s assistance in reviewing GM’s refusal to reimburse the full repair cost associated with this recall related failure.

Filed Jul 27, 2025 · Engine · CA

On 7/26/2025 approximately 8:30pm (PDT), driving south on CA I-880 in third lane from right traveling at approximately 50mph when vehicle engine died and went into neutral gear. Dashboard alert indicated to press start engine button, but would not start. Managed to maneuver vehicle to right shoulder amid rush hour traffic. Fortunately, a CA Highway Patrol officer saw us and was able to render assistance. Vehicle would not restart or go into neutral after several attempts to restart engine. Special tow vehicle was called to give us a tow home. This incident happened after we received a Chevrolet recall notice back in May or June about the engine and did take the vehicle in for service on 6/10/2025. The dealership service recommended using higher weight oil and it would help mitigate any potential issue. Obviously, this was not the case. We were very fortunate to avoid any serious injury or damage on the highway due to engine failure.

Filed Apr 27, 2025 · Fuel system · FL

Car would not start. towed into dealer for repair. This is the second time this has occurred, a well-known issue with GM trucks. on both occasions was a defective part, Fuel pump power control module.

Filed Aug 7, 2023 · Fuel system · FL

While driving on the I-4 interstate on Saturday August 5, 2023 - my 2021 Cheverolet Surburban stalled as if it had no fuel (had 3/4 of a tank). I was barely able to get over to the shoulder across three lanes of traffic on an overpass before it completely shut off! The Surburban would not start - when pressing the start button the ignition clicked for an extended period of time. We used On Star to contact GM/Chevy roadside support. They ran a remote diagnostic stating an issue with the Fuel Management System. I was told that this is a common problem with the fuel pump failure. I see there are open recalls for many other GM vehicles but not for my VIN currently. My Surburban has 40,669 miles. We waited over 3 hours for the tow truck that was dispatched by GM/Chevy. We were not in a safe location. Turns out my Surburban cannot be placed in neutral without the vehicle being started, which means it had to be dragged on and off the tow bed. I had to pay $450 to have it towed to my my home town dealer as we were 90 miles from home. We were originally going to tow it to a local dealer when the Surburban stalled but they told me not to as they are backed up and could even look at it for 9 days. I am now waiting on word from my dealer. Clearly the recall needs to be expanded based upon what we are finding online and from what everyone is telling us locally.

Filed Feb 10, 2023 · Fuel system · MN

My vehicle died unexpectedly in the middle of the road while backing out of my driveway with cars coming and going around me. It would not start up again nor could I put it in neutral to move it out of the way. I’ve learned my 2021 Suburban has a defective high pressure fuel modular. Also learned there is a parts shortage as well.

Filed Jan 26, 2023 · Electrical, Engine · KY

Multiple issues with transmission since owned. It randomly goes into "limp" mode and everything will blink and it won't start back. The transmission has always shifted hard and sounded funny they told me if was normal for the vehicle. Leaking transmission fluid when owned for 4 months. I have had to the dealer multiple times, several repairs, told it is safe to keep driving by GM. The inverter is bad and told me it was ok to drive until they can repair. GM will not give me a fair response or answer. The dealership won't buyback, and offered to purchase for nearly 30k less than I bought it for 18 months ago brand new. The engine light comes on and off randomly told me it was ok with a diesel it may do that when it gets cold.

Filed Jan 11, 2022 · Engine, Transmission · TX

Came to a stoplight and the car came to a stop. The car then automatically shifted into park on its own. The car would not shift out of park an the engine would not start. The car just died. Police showed up as I was in the middle of traffic and no one could even get the car to shift into neutral to push it out of the road. Very dangerous situation. Tow truck came and they could not even get the car in neutral. So they had to drag the car onto a flat bed. Dealer has examined the car. The starter was bad, the fuse box was bad but the major issue was in the engine where the lifters went out. To have the lifters go out at less than miles is unacceptable. The dealer commented that they are seeing this issue constantly from 2021 Chevy SUVs. This is a major safety issue in that there is no was to put my 2021 suburban in neutral when this happens to clear the vehicle from a busy highway. Please investigate this.