2017 Chevrolet Volt

Was driving on highway when given error ""Propulsion Power Reduced." This resulted in less power available, which is a safety hazard. Then after a while of driving (on the highway) I received the error "Engine Not Available," which caused me to have to continue on electric only power. If I did not have any battery left in the traction battery, I would have had to maneuver to the shoulder. The error code revealed by a scan with the OBD device P0403 relates to a failed EGR valve. There are no replacement parts for this valve, according to GM, so future failure is likely.

Currently, two two issues are ongoing with my 2017 Chevrolet Volt Premier. I took my Volt to Epic Chevrolet in Sacramento, CA, on August 9, 2024, because the "Propulsion Power Is Reduced" warning and the "Service Park Assist System" warning came on with the "Check Engine" light. After diagnosis I was informed that the "EGR Valve" has failed; however, Chevrolet cannot procure the EGR Valve to repair my Volt and it is now October 14. I have been coordinating with Chevrolet Customer Assistance who continue to inform me that they are looking for the part but cannot provide it - apparently this part has been redesigned. This is the third time in 12 months that the Volt has been in for repair, all under warranty, for charging and propulsion related issues. On August 23, 2023, the Volt was in the shop for 15 days getting the "Battery Energy Control Module" replaced under warranty. On [XXX], one week after being repaired, my car would not start and had to be towed. That time the "Hybrid Battery Disconnect Relay Assembly" failed and was in the shop for 14 days, again repaired under warranty. This time, my car has been in the shop for 66 days waiting for an EGR Valve that, per Epic Chevrolet, is covered under warranty. It is unacceptable for Chevrolet to warranty its cars but not have the parts to perform the repair and let owners continue to pay loans on a car, insure a car, and have financial hardships for not having a car. I am not confident that, once fixed, something else will not go wrong. Plus, I was quoted $1,160 to fix the safety issue of the Parking Collision Warning. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Automation-On 10.1.24 my car stopped working. It would turn on, but would not shift. It was also showing my EV was fully charged but the EV miles read 0. My husband came and plugged my car in and saw that when I turned the car on it read "shift to park" Also the codes from my OnStar app read "Lithium Ion Battery"- Issue found in High Voltage battery. "12 volt battery needs attention" 10.2.24 we called GM to report issues and referenced N232432680 (BCEM). We were informed that even though we can read diagnostic reports on OnStar it needed to be confirmed from a certified GM dealership that they could not confirm this is the warranty issue if they did not 1st had the certified dealership share their diagnostic report. Bergstrom shared it sounded like BECM that is under warranty. They continued to share it didnt look good and the VIN was not in the system to be covered. Shared the minimum amount we would pay was $440 for the 2 issues for labor/diagnostics.10.4.24 we called GM to file a report we were given a case manager to work our case. 10.8.24 received call from case manager shared no warranties seen on file. I asked for this to be documented and emailed to me, I was told she could not share this information other than this phone call. Bergstrom called saying the car was ready to pick up, cleared codes/no issues, drove 26 miles with no codes. Shared GM never seen/heard anything like this and had no advise/help to offer. Shared only charged for 1 hour of labor. Asked for trade in for car. Was given price $1,200 under trade in value. Cause due to car not safe, potential issues. No documentation shared, nothing to show issues, car is clean/cleared to drive they had no answer than my car was fine but was not able to give lowest amount for trade in due to issues

At least 4 times in the past 1.5 years, my car has given the message “propulsion power is reduced” at random times. Each time after receiving this message, the car engine begins making a loud noise and the acceleration is greatly reduced, forcing me to drive at a slower speed until the message goes away. The most recent time it happened, in Aug 2024, it was late at night in an area with little to no cell service and I was genuinely terrified the car would just shut down, as I knew this model has done the same to other Volt owners. Thankfully, I did make it home, but this is something that has happened more times than I’m comfortable with, and I fear the day it happens again and puts others at risk. It has not received any further inspection other than the yearly state inspection, which is up to date.

Reduced propulsion message appears on the dash and car lost propulsion on the highway. The EGR blew a fuse and the car enters the walk home mode. This problem should be covered under warranty but my dealership says it is not covered. This issue causes the car not to be able to drive. Chevy is back ordered for the part and there is no estimate of when the part will be available. They apparently do not make the part anymore and there is no fix. Th EGR seems to have bad soldering and blows the fuse #3.

While driving on high-speed devided highways including stretches where traffic was 2-way (single lanes separated by concrete barrier during road maintenance) Chevy Volt indicated "reduced propulsion", and in 2 cases forced shut-down of electric and gas engine where the single-lane travel had cement barriers on both sides of the driving lane.In at least one case, the engine forced 30-40 mph travel until a break in the right-hand cement barrier was interrupted and I could get off the highway. In another case, the engine and fuel propulsion shut down but there was a breakdown lane on the right allowing traffic flow but exposing me to risk due to how close 65 mph traffic was passiing me. In each failure case, after turning off and re-starting the vehicle, the vehicle seemed to have re-set propulsion control and I could continue the trip at normal speed until another warning but not complete faillure occurred (both lanes being available so I could drive to an exit, turn off the ignition, restart and resume the travel). I believe the failure was in the BECM (Battery Energy Control Module) but the Chevrolet dealer identified an EGR failure that prevents their repair team from diagnosing the BECM. Whatever the failure was, it put me iin a very dangerous situation in at least 2 points in my 600 mile trip.

This car has a failed EGR valve which first became evident in March of 2024. There are no parts available, this in an emissions issue but the failure causes blown fuses which can cause the car to completely stop running which is a safety issue. Reduced propulsion is a symptom which is dangerous and this has been confirmed by three Chevy dealerships. I have had the EGR valve cleaned to the tune of $1200, have a deposit on a new valve which doesn't seem to exist for $850. There were no other messages before the failure. I am driving the car with the EGR valve disconnected, mostly on the battery power but no end is in sight to this problem.