CHEVROLET Complaints

What component or system failed or malfunctioned, and is it available for inspection upon request? (On our 2021 gasoline suburgan, the rear wheels locked up at free-way speeds, which nearly caused a possibly fatal accident. The lock released but it appears the strain caused rear differential gear teeth to break and the rear differential now needs to be replaced for the vehicle to operate properly.) How was your safety or the safety of others put at risk? (The sudden rear wheel lockup at freeway speeds resulted in temporary loss of control of the vehicle and significant surprise to the driver, who, after swerving into the adjacent lane was able to gain control of the steering and stop the vehicle. Had there been another vehicle in the other lane the MVA could have been fatal for 9 people in the suburban and any other vehicle involved.) Has the problem been reproduced or confirmed by a dealer or independent service center? (The rear differential damage was confirmed by a dealer.) Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? (No.) Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? (No warning or messages. This has happened 3 times over 3 years, always on extended trips 9-12 hours in duration. The first two times nearly caused an accident but no differential damage. This third time, the differential was immediately damaged due to the incident. We have since learned that this is an issue with 2022 suburbans, for which a recall has been issued. A recall has also been issued for 2021 DIESEL suburbans. However, no recall has been issued to gasoline 2021 suburbans, but apparently needs to be.)

The contact owns a 2019 Chevrolet Silverado 1500. The contact stated that a body-to-chassis grounding strap was previously replaced under GM Customer Satisfaction Program: N252515590 (Corroded Ground Strap); however, after the repair, the vehicle experienced electrical failures. The contact stated that while attempting to start the vehicle, several unknown warning lights illuminated, and the engine failed to start. The vehicle was towed to the dealer, where the starter and the ECM were replaced. Additionally, the dealer determined that a secondary grounding strap needed to be replaced, but the part was not covered under the Customer Satisfaction Program. The manufacturer was contacted and referred the contact to the NHTSA Hotline for assistance. The vehicle was not repaired again. The failure mileage was approximately 100,000.

I have been smelling engine coolant for some time and found a leak on the drivers side top seam where the aluminum meets the plastic tank on the radiator. This is a known problem with 2019=2026 Chevy Blazers by GM and it still hasn't been resolved. After researching, I have found numerous Blazer owners that have this same issue and some are on 3rd and 4th radiator replacement. I am afraid to drive the vehicle due to the leak that could leave me and my family stranded on the side of the road. I am also concerned about a major leak or seam separation that could allow a large amount of coolant out that could get on the tires and cause loss of vehicle control as a result. Also, the leaking coolant is a hazard to any animals that are around as the coolant puddles under my vehicle after driving. At this point, the Blazer is running hotter and I had to add coolant. I just called to price a new radiator...$450 and install...$1,025...that isn't a cost I should have to take on with GM knowing about this issue for years.

May 28 ,2026 I left work to get some lunch And when I went back inside my vehicle I turned it on and the check engine light came On and on the dash it was telling me to park the truck and it wasn’t going more then 45mph so I called my dealer ship simspson Chevrolet in garden grove and they told me they couldn’t do anything because it wasn’t under warranty so I had to take my truck to a near by auto shop because my truck is my daily and I use to get to work so the. The body shop found out the problem it was the wiring harness it was the way they installed the wiring harness it’s manufacturing I called my insurance company and I called GMC directly and they don’t want to help me

The contact owns a 2018 Chevrolet Colorado. The contact stated that while the vehicle was parked, the key was difficult to remove from the ignition. The dealer was contacted and informed that the shift interlock switch failed to recognize that the transmission was shifted to park(P). The vehicle was not repaired. The manufacturer was contacted, but offered no assistance because the vehicle was not under warranty. The failure mileage was approximately 60,000.

The contact owns a 2024 Chevrolet Malibu. The contact received notification of NHTSA Campaign Number: 26V212000 (Back Over Prevention); however, the part to do the recall repair was not yet available. The local dealer was contacted. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair, and the contact was unable to register the vehicle with the recall unrepaired. The manufacturer was not made aware of the issue. The contact had not experienced a failure.

When putting the vehicle in park an error displays, SHIFT TO PARK, and the vehicle does not turn off completely and will ding although you’ve put it in PARK. This has been happening for well over a year and the dealership says it’s a known issue but not a recall. There are times it’s taken up to 25 mins that I’ve had to sit in the vehicle to get the vehicle to turn off by wiggling the shifter or just putting it in drive and back into park, hitting the shifter button, etc. I’ve had to let the battery die in the very beginning because I panicked when it happened and had to get into work. My son has been late to class when he uses the vehicle to drive to school. It’s been such an inconvenience and a safety issue because the vehicle doesn’t turn off and won’t lock and who knows if it’s really securely engaged in the park position or not.

The contact owns a 2016 Chevrolet Tahoe. The contact stated that while driving approximately 10 MPH in sand, the vehicle stalled, and the steering wheel seized. The contact turned off the vehicle, jiggled the steering wheel, and waited approximately 10 minutes before restarting the vehicle to continue driving. The vehicle was taken to a certified mechanic who was unable to duplicate the failure. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 56,000.

CRITICAL SAFETY INCIDENT / LIFE-THREATENING VEHICLE FIRE HAZARD. On January 2, 2026, I purchased a 2020 Chevrolet Trax. Within less than five months, while driving in active traffic, the vehicle suffered a sudden, catastrophic powertrain failure. The vehicle completely lost all acceleration, leaving me trapped and stranded in a highly dangerous roadway position. Immediately following the power failure, the engine bay filled with heavy smoke and began severely overheating. The vehicle came within moments of bursting into a full thermal engine fire. This vehicle was a rolling death trap that almost killed me on the road. No one is taking this life-threatening safety failure seriously. The selling dealership refused to address the known hazard, forcing a predatory repossession that destroyed my financial life while leaving a severely defective, fire-prone vehicle completely unaccounted for. I need an immediate federal investigation into this vehicle before this defect causes a fatal fire for another driver.

The vehicle experienced repeated high-voltage system warnings and battery conditioning system failures. On multiple occasions the “Service High Voltage System” message appeared along with codes P0530 and P1C26 related to the lithium-ion battery conditioning system that controls heating and cooling of the high-voltage battery pack. A critical U3578 code triggered an urgent OnStar alert requiring immediate service. The high-voltage fault was linked to an overcharged HVAC system that caused the A/C compressor to fail. This led to a full HVAC system replacement, radio/infotainment failure, and multiple module reprogrammings. The vehicle could not charge past approximately 65% and showed a red 12-volt battery light after charging. Burning electrical smells were present during some incidents. Warning lights and messages appeared repeatedly and were confirmed by OnStar diagnostics on April 28, May 6, May 19, and June 16, 2026. The dealer performed warranty repairs including compressor and HVAC replacement per TSB 25-NA-130, yet the same high-voltage and battery conditioning faults returned. The problem has been reproduced and documented by the dealer and OnStar. These defects affect critical high-voltage battery thermal management and electrical systems. They create risks of sudden power loss, inability to charge, reduced drivability, and potential safety hazards. The vehicle has been out of service for extended periods and is currently parked due to ongoing safety concerns. The manufacturer was notified through warranty claims and EV Concierge case #95412771 but has not permanently resolved the defect. The failed components (high-voltage battery conditioning system, HVAC compressor, and related modules) are available for inspection upon request.