2020 Chevrolet Equinox

December 2025 I was at a complete stop and the car clunked and the brake pedal got hard hard to push and then a couple months later a brake sensor light came on and when I plugged the code reader into it, it said give me a brake sensor code, and then it started slamming on the brakes all by itself when I went to takeoff hard like give you whiplash hard and it didn’t just do it once it did it a few times and then it wouldn’t go into reverse and then it wouldn’t go in neutral, and then it started smoking. My safety was affected by it, slamming on the brakes that could make someone hit me. It could hurt my back and neck. Yes, I have proof. Yes, I notified the dealer. Yes the vehicle has been inspected and I got an estimate by two different Car Lot the one I bought it from Ken valor motors, and Matt Mazzoni’s I have. Plus I have diagnose diagnostics printouts from OnStar and this is a 2020 vehicle. It should not be having these problems and now I’m stuck paying for a vehicle that I can’t even drive.!!

I am submitting this on behalf of my daughter, [XXX] . On Friday, May 8, 2026, [XXX] was traveling southbound on Highway 89A approaching [XXX] . Highway 89A is a narrow, winding two-lane canyon road with limited shoulder and significant elevation changes. While still on the canyon road, her 2020 Chevrolet Equinox suddenly lost all power, including power assist to both steering and brakes. A sudden loss of power steering and brake assist on this road presented a serious risk of loss of vehicle control. Fortunately, she was able to get the car stopped off of the roadway. However, she was then unable to place the car into Park or shut off the ignition. Multiple warning lights were illuminated across the instrument cluster. Her roadside assistance plan towed the car to the nearest repair facility, where on Monday, technicians were unable to replicate the issue. A previously stored DTC P3055 was found in the diagnostic system. This code relates to a known and documented issue with Chevrolet Equinox vehicles, for which Chevrolet has issued multiple Technical Service Bulletins, including TSB 21-NA-139, which identifies the Multifunction Power Supply Converter (GM Part #13510484) as the known culprit for this failure mode. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

On Saturday, April 18, 2026, I was driving home from a neurology appointment with my two daughters, including my child with special needs. I intentionally chose not to take the expressway and instead drove a lower-speed route home for safety reasons. While traveling approximately 35 mph, the vehicle suddenly displayed an “Engine Power is Reduced” warning. As I attempted to safely maneuver through traffic and pull over, the brake pedal became extremely stiff and difficult to depress, requiring significant physical force to slow and stop the vehicle. The sudden reduction in braking assist created a serious safety hazard for my family. Had this occurred at highway speeds on the expressway, the outcome could have been catastrophic. A post-incident inspection identified failure of the vacuum pump drive assembly and related timing/variable valve timing (VVT) components. Photographs taken during disassembly document the condition of the timing chain, camshaft, VVT actuator/phaser, vacuum pump assembly, and associated components at the time of repair. Diagnostic records also documented DTC Code P1101 following the incident. The vehicle is currently undergoing further inspection and diagnostic evaluation at a certified Chevrolet dealership to validate CPO warranty coverage and determine the full extent and cause of the failure. Based on the sudden loss of engine performance and reduction in brake assist, I believe this condition represents a significant safety risk to vehicle occupants and the public.

The contact owns a 2020 Chevrolet Equinox. The contact stated that while driving at various speeds and attempting to accelerate from a stop, the engine started choking. The vehicle lost automotive power, stalled, and shut off unexpectedly and stalled. The contact waited for a while, restarted the vehicle, and continued driving. The failure became persistent, and several attempts were needed to restart the vehicle. Recently, the failure reoccurred 4 times while attempting to drive to the residence. The contact stated that water was leaking into the cabin of the vehicle from the moon roof, and the rear wheel well was filled with water, and there was water moving around inside the vehicle, and the floor mats were extremely wet. Due to water entering the vehicle, the moon roof and the radio were inoperable. The contact stated that the check engine and TPMS warning lights were illuminated. The vehicle was inspected by a family member and was diagnosed with fuel injector failure. The vehicle was taken to the dealer, but was not diagnosed for the stalling failure. The dealer replaced the fractured fuel cap; however, the failures persisted. The manufacturer was not made aware of the failures. The failure mileage was approximately 68,000.

Multiple times (Friday, March 27, Monday March 30, 2026) we have had the 2020 Equinox fail to accelerate at green lights. The gas pedal is pressed to the floor and car is VERY slow to accelerate. It takes multiple depressions of the gas pedal to accelerate more than 10 mph. There are open recalls on certain vin numbers from the NHTSA but mine was not on list yet appears to have many of the same concerns. Our local mechanic believes the details of recall bulletin 20V668000 should apply to our car as well.

The contact owns a 2020 Chevrolet Equinox. The contact stated that after coming to a complete stop, the vehicle hesitated while accelerating. No warning light was illuminated. The vehicle was taken to an independent mechanic, who replaced the front wheel drive transmission assembly, flushed the transmission fluid, and updated the transmission control module. The manufacturer was made aware of the failure and informed the contact that there was no recall associated with the VIN. The failure mileage was approximately 72,000.