2025 Chevrolet Equinox Electrical System Problems

For the second time the service high voltage system warning has came on first time it was updated the dealership said now it’s back on again A/C not working properly

On Monday, April 6th, I was turning into a parking lot and the braking system, specifically the anti-lock braking system (ABS) and electronic brake control module, appeared to malfunction. While driving, I received a warning indicating the ABS was off, and the brake pedal became soft with reduced stopping ability. The check engine light also came on. I had to coast the vehicle to a complete stop. The vehicle is available for inspection upon request. The loss of normal braking function significantly reduced my ability to stop the vehicle safely, increasing the risk of a collision. This created a dangerous situation for myself, passengers, and other drivers on the road. Brake failure at any speed presents a serious safety hazard.I am aware of similar complaints reported for this issue. My vehicle was towed to and inspected by a dealership where it sat overnight before being diagnosed; however, they were unable to reproduce the issue at the time of service. Despite this, the braking failure did occur and remains a safety concern. The service advisor told me to "bring it back if it happens again" and that it "lost communication with the EBCM" which sometimes happens. The vehicle has not yet been inspected by the manufacturer directly, police, or insurance representatives. There were no warning lamps or other symptoms of this problem prior to the failure.

On four occasions while operating the vehicle down the roadway the dash screen and infotainment / vehicle information displays all have went dark off and reset causing disruption to vital information. Cruise control stayed active. It is unknown if the advanced safety features failed during the reset.

The navigation system and the one-pedal driving system started malfunctioning. The navigation system began displaying a different location during remote driving, causing it to send me down a street against traffic. This issue has never been resolved and continues unabated. Then, while on the highway, when I needed to slow down, the one-pedal driving system deactivated, causing me to almost collide with another vehicle. This has happened more than three times this month. GM and Chevrolet just keep saying they'll call me back to resolve the issue, but they never do, and they refuse to fix it.

Braking issues Sensors go off when nothing aroung Slow backing car engages brakes Bad smell like a strong BO persists after cabin an oil fulter changed Battery / alternator drain 12-07 2025 to 01-17 2026 in auto shop I was told wainting for part ( Onstar ) Prior brake issues early April 2025 the week of having auto brakes and steering lock up during 45mph drive it was documented as a camera issue No power as if brakes applied while, Car has felt when turning like it skips while in a turn during driving all 8 visited on document other 4 not documented System dignostic or dealer service doesn't show issues. Issues have been on going without success other issues possible related or newer Miles first reported brake and steering lockup 145 miles most recent 7750

wiring harness on PCV Valve causes check engine light to come on as soon as it rains or gets wet. Dealer has tried multiple times to fix issue to no avail. The parts are on national back order and they can not get them. Dealer has told me that this is a know issue with this model year equinox.

The illuminated dashboard, center control console, and headlights suddenly turned off while the vehicle was in motion during a dark night. The blackout lasted approximately 10 seconds and I was unable to see to keep the vehicle on the roadway. After running onto the unpaved shoulder, I was able to fully stop the vehicle without hitting anything. All of the lights came back on and the dashboard showed a message that said "Auto shutoff". Then everything returned to normal. This problem hasn't been reported to the dealer yet, but will be discussed during an upcoming service to correct one of the other problems that keep occurring with this vehicle.

OnStar Telematics module is defective and keeps draining the battery causing the need for multiple jump starts. The problem has been confirmed by Don Hewlett Chevrolet Buick on March 5th, 2026 and was told that the part is on backorder and that there is no ETA.

The contact owns a 2025 Chevrolet Equinox. The contact stated that the high-voltage system message was displayed. The vehicle was taken to the local dealer, where an unknown diagnostic test and repair were performed on the computer, but the failure recurred. The vehicle was taken to the local dealer again, where the AC receiver was ordered; however, the part ordered was the incorrect part. The dealer informed the contact that the part was on back order. The vehicle was not repaired. The manufacturer was contacted and opened a case. The failure mileage was approximately 6,065.

My Onstar module is draining my battery. I have to constantly get my car jumped to get to and from. It's a danger to my job as a rideshare driver. I went to the chevy dealership today and they told me that the part I needed to order is on back order. How can a piece like that be on back order. This could potentially mess people's alternators and starters up in their cars.

While driving, a burning odor developed followed by visible smoke entering the passenger cabin from the dashboard/HUD area. We pulled the vehicle over and had it towed due to safety concerns. Dealer required dashboard disassembly to investigate potential electrical/fire condition but was unable to replicate the issue.

Vehicle telematics module defect across the board that deactivates safety features from Onstar in case of an accident. GPS and Internet connection lost.

The contact owns a 2025 Chevrolet Equinox. The contact stated that the vehicle failed to start up as needed. The vehicle was towed to the dealer; however, the cause of the failure was not yet determined. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 2,600.

IN THE EQUINOX LT, VIN [XXX] , THE TELEMETRY MODULE HAS AN ISSUE PER THE DEALERSHIP. THE VEHICLE LOSES POWER DUE TO THE TELEMETRY MODULE ISSUE. THE PART IS ON ORDER AND AS OF JANUARY 16, 2026. IT WILL TAKE 4 TO 6 WEEKS TO ARRIVE. IN THE MEAN TIME I HAVE HAD TO CALL ROADSIDE ASSISTANCE TWICE IN TWO WEEKS, AND THE VEHICLE HAS BEEN JUMPED 3 TIMES IN THE PAST TWO WEEKS. HOWEVER, THE VEHICLE HAS BEEN TO THE DEALERSHIP 4 TIMES. ONCE PRIOR TO THE DIAGNOSIS, AND THREE TIMES SINCE THE DIAGNOSIS. THE VEHICLE HAS APPROXIMATELY 16, 600 MILES, AND IS DRIVEN TO AND FROM WORK. THE TELEMETRY MODULE IS THE CAUSE OF THE OVER ALL ISSUE, PER THE DEALERSHIP. THE BATTERY CONTINUES TO GO DEAD ON VEHICLE [XXX] , 2025 CHEVROLET EQUINOX. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Just after Thanksgiving, my vehicle displayed a “Service Emergency Calling” message. I brought it to the dealership and they documented the concern, referencing GM bulletin PIP6077B, but no repairs were performed. On December 30th, while parking, I shifted into reverse and the vehicle would not reverse and instead moved forward. A “Service Transmission” warning appeared and the vehicle was towed. The dealer cleared the codes and released the vehicle without performing any diagnostics. About two weeks later, when starting the vehicle after work, several warnings appeared, including “Service Safety Restraint System,” “Forward Collision System Unavailable,” and a rear-seat alert despite no passengers. While driving, lane keep assist, lane departure warning, and blind zone steering assist were not functioning. The next morning, the vehicle suffered a complete electrical failure. It would not start, the screens stayed off, and the doors would not lock or unlock. The vehicle was towed again. The dealer replaced the battery, claimed it had simply died, and attempted to return the vehicle to me. I refused because none of the prior warnings were diagnosed, and I was told the codes “erase when the battery is changed.” After I demanded full electrical and transmission diagnostics, including a parasitic draw test, the dealership informed me the vehicle was unsafe to drive. They stated the OnStar/telematics module was draining the battery and the replacement part was backordered with no estimated arrival date. I was told multiple customers are waiting for the same part, which means this is NOT an isolated event and needs way more attention than it's being given. This defect results in loss of essential safety systems and complete vehicle shutdown, creating a significant safety risk.

The Equinox is detecting objects in the rear camera that are not there and automatically applying the automatic emergency breaking. This is causing the car to completely stop and has now caused me to injury my back due to the force of the stop. There is no warning given that the breaks are being applied. I was backing up at 7 miles an hour and the Equinox just stopped dead and there was absolutely nothing near the car. The car was in for an oil change and they said nothing was wrong with it. This latest incident of 4 now happened today and caused me to almost be hit in the parking lot of my child’s school while backing into a parking spot.

I am on 20 service calls.Mine is currently having onstar issues screens glitching, Apple CarPlay won’t connect, sensors on mirrors are going off nothing beside me, when I hit my breaks it keeps turning my emergency brake on and engine power reduced keeps coming on dash but the dealership is saying GM said my warranty is voided due to a aftermarket part

2025 CHEVROLET EQUINOX HAD, ON NUMROUS OCCASIONS, COMPLETE POWER FAILURE. THE VEHICLE HAD TO BE JUMP STARTED MORE THAN ONCE. THE VEHICLE WAS BROUGHT IN TO THE DEALERSHIP, BY THE OWNER, WITH POWER FAILURE CONCERNS. THE VEHICLE WAS TOWED TO THE DEALERSHIP DUE TO COMPLETE POWER FAILURE CONCERNS. THE VEHICLE HAD BRAKE PEDAL ISSUE WHEN POWER FAILURE OCCURRED. MEANING THE BRAKE PEDAL WAS NOT ABLE TO BE PRESSED. DISPLAY SIGNALS: ERRONEOUS DATE/TIME, ABS, CHECK ENGINE, VEHICLE DRIVE MODE UNAVAILABLE YOUR VEHICLE MAY NEED SERVICE. FURTHERMORE, ON ONE OCASSION A POWER SURGE WAS DETECTED. THE VEHICLE WAS DIAGNOSED AND AN ADVISOR STATED THE TELEMETRY MODULE IS GOING OUT. HOWEVER, THE PART THAT WAS REPLACED IN THE 2025 CHEVROLET EQUINOX, SEVERAL WEEKS LATER, WAS ACTUALLY THE TELEMATIC CONTROL MODULE. THE VEHICLE DISPLAYS DRIVE MODE UNAVAILABLE YOUR VEHICLE MAY NEED SERVICE, EVEN AFTER TELEMATIC CONTROL MODULE REPLACEMENT BEGINNING THE NEXT DAY AFTER PART REPLACEMENT. THE MESSAGE DISPLAYED BY THE 2025 EQUINOX OCCURS ON A DAILY BASIS. ISSUES ARE OCTOBER 2025 TO PRESENT DAY.

Twice, while driving in falling snow away from home, the front wipers did not work properly when switched to LO or HI. They behaved as if set to intermittent wiping. The intermittent wiper setting worked properly to adjust the wipe interval. But setting to LO or HI did not cause the wipers to go constantly. As far as I could tell, the arm pivot area was clear enough for them to wipe. The problem went away on its own without restarting the car. It happened again a few days later when parked in a driveway.

The vehicle became completely disabled due to a sudden battery drain at approximately 5482 miles. I purchased the car with 2553 on it in May. The vehicle would not start a few times and had to be towed to the dealership on Friday Dec. 26, 2025. The dealer confirmed that the OnStar/telematics module is malfunctioning and continuously draining the battery. The defective module is on backorder with no estimated arrival date, leaving the vehicle unusable. They also do not know if they have a loaner for me. This creates a safety risk because the vehicle can become inoperable without warning, potentially stranding the driver. The issue has been reproduced and confirmed by the dealership. Prior to the failure, the OnStar system stopped functioning, but no warning lights appeared on the dashboard. My Chevy App stopped working 26 days ago as well. I now have a Loan payment to make for a car that isn't even working and brand new. Dealership doesn't know a timeframe either.