The EGR Valve and EGR Cooler went out on the vehicle while driving on the highway, causing my propolsion power to decrease or rendered unusable. This also caused inconsistent engine pressure and caused my engine to overheat, having to pull over multiple times while driving. The problem has been diagnosed by a Chevorlet certified repair center. There were no warning lamps or messages until the problem began abrubtly while driving.

- New Smyrna Beach, FL, USA

The EGR valve failed. This caused the vehicle to have insufficient propulsion while driving. The dealer has confirmed the EGR valve is the problem. The vehicle is at the dealership. The check engine light came on. The dealer is now stating the replacement EGR valve is a $4000 part because GM stopped making the part when they discontinued the Volt. An EGR valve should cost $250-$400 not $4000. The current trade-in value of my vehicle is only $7000. I cannot get my vehicle fixed due to the cost and the vehicle is too dangerous to drive due to the power loss issues.

- Hallsville, MO, USA

I was driving effortlessly down [XXX] between san francisco and santa cruz when suddenly i seemed to be losing power. Pressing the accelerator/gas pedal was not obtaining the usual result and I was going slower and slower by what felt like the second. I also noticed that it switched to gas although it said there were around 12 miles on the EV battery which was a sign that something was wrong. Fortunately there was a break and traffic was going at a speed which allowed me to make it across three lanes of traffic in just enough time for an alert posted on my dash saying something about loss of propulsion (not sure what it said exactly, because, i was driving!) and i coasted onto the shoulder, but barely. By that time it indicated that there were zero miles on the EV battery. (2 weeks prior I had been unable to start the parked car. I had the 12V battery replaced as the local mechanic where it was towed thought that that might be the cause.) I turned the car off and back on and when I tried to shift to D or R the dash stated "Return to P" AAA made us a priority tow as we were on a major thoroughfare. We were at risk, but thankfully we were relatively safe. I called GM to say that it seemed that the EV battery had died suddenly. I was advised to bring it to the dealer. I called the dealer and they quoted me the cost of replacing the EV battery. They mentioned nothing of National Highway Traffic Safety Administration investigation into the model year 2016 through 2019 Chevrolet Volt amid complaints about the hybrid-??s battery energy control module, or BECM, some of the complaints indicating that drivers had little to no warning before the car lost operating power or entered reduced power mode, which was exactly what had happened to me. Nor did they mention a letter I discovered on line dated March 6,2024 re:Battery Energy Control Module Malfunction, and stating that they would be contacting customers. I was never contacted. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C.

- San Francisco, CA, USA

I was driving at about 50mph all of a sudden I got a propulsion error and my car stopped working it had no power! People had to swerve around me and I was almost hit. My car would not drive I shut it off and back on multiple times. Finally it started but would not go above 25 it was so scary. I went to the dealership they said it-??s known issue since 2016 and that my miles were too high so it would not be covered to fix the total amount it almost 3,000 this seems unfair that Chevy would continue to sell a vehicle knowing it had issues with a energy control module and not fix it for free. Especially when you could be killed while driving it!!

- Ocala, FL, USA

N232432680 / PE23022 On some 2016-2018 model year Chevrolet Volt vehicles, a malfunction involving the battery energy control module (BECM) may cause a reduced power mode, a no start condition, or a no charge condition. The above safety issue required an extended warranty recall for* 2016-2018 Chevrolet Volts due to a known issue with failing battery energy control modules (BECM). The warranty was not extended to vehicles sold in CARB states, as the Partial Zero Emissions Vehicle (PZEV) warranty is the same as the extended warranty granted by the NHTSA investigation which resulted in the extended warranty noted above. (N232432680) However, it GM's practice to decline warranty coverage for a CARB vehicle with the PZEV warranty if it is not longer registered in a CARB state, thereby skirting around the special coverage from the NHTSA investigation. This is a circumvention of the findings by the NHTSA and the safety of motorists.

- Mico, TX, USA

Propulsion Power Reduced and car had trouble breaking and would stall for a moment. Will not let me use the EV range even though the ev battery is at fully charge.

- Youngsville, LA, USA

On [XXX] my 2017 Chevy Volt was having propulsion issues, and later would not start at all. This was not the first instance of propulsion issues, fortunately I was able to pull the vehicle into parking lots. The vehicle was towed to Midway Chevrolet, 2323 W Bell Road, Phoenix, AZ 85023. On Friday [XXX] the dealership called me to let me know the vehicle was ready for pickup. After my arrival at Midway the car was driven one last time and must have experienced trouble, so it was checked out. Midway then informed me that one of the 32 Battery Energy Control Module (BECM) was not producing enough voltage to propel the vehicle and not drivable. Midway ordered the replacement BECM and when I inquired several days later I was told the BECM was on backorder and they hoped to have the BECM in September 2024. In September I was told that part might be available in December 2024. I have checked with the GMPARTSCENTER and other component distributers and told the part was on national back order. Although I was fortunate the vehicle didn't die completely while I was driving it, it was certainly a concern. The vehicle has now been at Midway for 6 months and the lack of availability of the replacement BECM is a concern. What if another section of the battery has a voltage issue once I get the vehicle back? I will be placed in an unsafe situation and facing months of having the vehicle at the dealership waiting on parts. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Phoenix, AZ, USA

Power surge I hit the gas to cross the highway and lack of power then got home the next morning started the car and it started serging in the driveway then it shut down altogether.

- Valdosta, GA, USA

This is a safety issue for Chevy Volt. After seven years of good operation, our 2017 Chevrolet Volt stopped running in traffic while we were driving on [XXX]. The Check Engine Light was on, and "Reduced Propulsion" Message on dashboard panel. We brought it to the dealer from whom we purchased the vehicle. Tech Report paraphrased, Customer states CK Engine Light is on and "Reduced Propulsion" Message on dash Fault Codes: P0030, P0031, P0054, P0135, P0403, P0405, P0443, P0458, P0489, P0597, P0598, P06DA, P06DB Found fuse [F03] blown for EGR valve Likely EGR Valve sticking and causing fuse to blow. The technician stated the Exhaust Gas Recirculation (EGR) Valve is defective, and needs to be replaced. Replacements are scarce, on backorder, and can be many weeks or months to wait for a part. Many report their Volt unusable, sitting idle, waiting for EGR replacement. EGR valve replacement cost is quoted as $2800, which is quite expensive for a valve replacement. This has been happening in recent time to many Volt owners. There are many reports in online forums and no the GM forum website. [XXX] There has been no diligence, interest, nor cooperation from GM. The cost of replacing the defective valve is usurious, outrageous, indefensible. This is a problem well known by GM, who neglects their obligation to contact owners of a safety hazard inherent in their vehicles. The Volt's EGR valve can cause the car to shut down by blowing the "walk home" [F03] fuse, which was our experience. This is a safety issue. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Shoreline, WA, USA

Problems with EGR valves still in defects, and engine gaz motor loose power. GM don-??t have enough parts to resolve them.

- Lauderdale Lakes, FL, USA

My car stopped all of a sudden and lost power while my wife was driving. She could've been in a major accident since the car lost power. This has happened a few times in the past. Luckily she wasn't on the freeway or she could've been rear ended at highway speeds. There were warning lamps that said check engine and "Lost Propulsion". This should be looked at closely as my safety as well as the safety of others was at risk. VERY DANGEROUS SITUATION! I had my car towed to the nearest auto repair shop where it is being looked at.

- Orange, CA, USA

The vehicle tells me to "stop and shift to park" while I am driving, and power was lost to accessories such as the climate control. Since the EGR was identified as the cause of the problem, the car remains on "Propulsion Power Reduced" mode. The EGR has been backordered for months, if not years, and aftermarket third-party EGR valves are not readily available either. However, there is no recall, and this is clearly a common problem on these vehicles as attested on GM-Volt forums. The EGR failed about one year ago, but now the message on reduced propulsion power is presented every time I start the vehicle.

- Statesboro, GA, USA

On November 8, I was on a 5 hour drive and after 4 hours while driving on the gas engine since the 43 mile electric range was already depleted, a warning suddenly appeared on the dashboard screen - Shift to Park, something about reduced propulsion and the check engine light came on. I was driving 55 mph on a highway and immediately had no propulsion whatsoever. Tried to pull over and barely got to the edge of the highway with cars and trucks speeding behind me and then around me. On the roadside, the car would turn on and off and I could change gears with the shifter, but no matter what I did the propulsion to move the car would not work. The car had to be towed to the nearest dealership for repairs where it remains.

- Stamford, CT, USA

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.

- Chicago, IL, USA

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)

- Sacramento, CA, USA

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

- Lodi, WI, USA

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.

- Winchester, VA, USA

Mil came on for egr malfunction. Part not available.

- Rockford, MN, USA

While driving on the highway there was sudden power loss with a message on the display stating "propulsion reduced" and had to pull over.

- Morgan Hill, CA, USA

As I understand it, the EGR valve failed causing the car to shut down suddenly on the highway. Apparently by blowing the "walk home" fuse. The EGR valve has been unavailable from GM worldwide since Oct 2023 and there is no estimate when it will, if ever, be available.

- Shrewsbury, MA, USA