2016 CHEVROLET VOLT Power Train Problems

Driving at 75 MPH on the freeway the power completely cuts off an a message appears on my dash "Propulsion Power is Reduced" - Pressing the gas barely gives any power, Imagine being in the middle of flowing traffic doing 75 mph to close to 20 mph. Research shows me this is a KNOWN issue with GM and the problem is with the BECM control module. There is also the issue of the EGR valve which apparently is tied into the BECM. I brought to the Chevy dealer and they said the BECM NEEDS to be replace ASAP because GM knows this is a dangerous situation and GM extended the warranty on this part to 150,000 miles. My vehicle is at 152,400 miles and they will not cover this. This is a serious issue that should be a recall that forces GM and Chevy to pay for this fix as it is something they have been aware of for years and it is a major accident waiting to happen. Please make them issue a recall for the BECM fix.

Vehicle had the Battery Energy Control Module fail at about 87,000 miles. Vehicle will not start and will leave you stranded when this happens. This is a known defect and GM issued a special coverage to extend the warranty for this specific component, but for some reason only applies to a handful of VINs. Mine was not one of them, so I got stuck with a $2500 repair bill. I love the car and am not mad that they are breaking, engineering is hard. I am mad that even after a requirement from the NHTSA, Chevy is refusing to repair a known defect with their vehicles that can leave the owner stranded and is making the owners foot the several thousand-dollar repair bill. This was my first Chevy, and due to the poor way this has been handled, probably my last.

The contact owns a 2016 Chevrolet Volt. The contact stated that while starting and driving at an undisclosed speed, the "Reduced Propulsion" message was displayed. Additionally, after parking the vehicle, the "Shift To Park" message was displayed, and the vehicle failed to turn off. The contact pressed the Start/Stop button and then opened and closed the front driver's side door to turn off the vehicle. The vehicle later failed to charge and start as needed. The vehicle was towed to the dealer, where it was determined that the Battery Energy Control Module (BECM) needed to be replaced; however, the part was on backorder. The vehicle was not repaired. The manufacturer was made aware of the failure and a case was opened. The failure mileage was approximately 83,574. The VIN was unavailable.

Mileage: 83,574

Faulty micro-switch from factory, causes power surge. Flawed microswitch in transaxle shift cable. Incomplete connection of microswitch resulting higher voltage to PCM.(power control module) This irregularity, shows a DTC code reducing power propulsion during movement. The car will loose power & ability to shift. During driving movement. Quite a safety concern. A "shift to park" error displays on driver display screen. An OBD2 scanner will clear code & after a few attempts remain operational. However intermittent & unpredictable when to expect the loss of traction power.

My 2016 Chevrolet Volt loses power while driving and the "propulsion power reduced" warning message appears. This has happened multiple times in the past few weeks and it is very dangerous losing power while traveling. After taking it to a Chevy dealer for service, they advised that it was an internal failure of the BECM (battery energy control module) and that it would need replaced. After searching online it appears that this is a common issue with the Chevy Volt models from 2016 - 2019. So much so that GM extended a special warranty to cover this failure up to 15yrs and 150,000 miles. Unfortunately for reasons I still don't understand, I was informed that my vehicle is not covered under this special warranty despite it specifically being the year and model that is affected. My vehicle currently has 93k miles and was purchased in 2016. So I am just outside the original 8 year 100k mile warranty but thought I was covered under this new special coverage given that this is an issue that GM is clearly aware of. I was also shocked to find out that there apparently was never a recall for this issue. My wife and child normally take this vehicle across town at highway speeds and I'm lucky the issue only happened to me. I fear for those who brought their vehicles and are not aware of the issue and will be told that theirs isn't covered as well.

The vehicle loses power when trying to accelerate when driving in electric mode, and the gas engine kicks on after a second at which point acceleration returns. It occurs when the battery power is high or low. Sometimes a warning pops up on the dash saying speed is limited to a specific MPH.

I was driving in clear weather (with my ICE engine as propulsion) when an Engine Warning Fault light appeared on my dash and the vehicle slowed to 5mph with no response from the throttle pedal. I pulled into a parking lot, had the vehicle towed to an independent service shop, and had them check the codes. There were a dozen faults stored, but they found the 'Non Walk Home' fuse had blown, and faults pointed to the EGR Valve as having faulty electronics. They could not find an EGR valve for sale so they unplugged the EGR Valve and replaced the fuse, which allowed the engine to drive normally again, but with the Check Engine Light on at all times. I called my local Chevy dealer and they told me the EGR I needed was Part Number 12691147 for $243, but they were backordered and there were dozens of people in front of me for their dealer alone. Now, 11 months later, I'm still waiting on the part, I have found hundreds of other Volt owners online with the same issue, and the Part Number has been changed by GM to 19436113, with a price increase of 1100% to $2642. And the part is still not available because of "high demand" on a car that was discontinued five years ago.

On [XXX], this Volt was towed to the Dealer because the Volt would not start, would not charge, and the engine light was on. The Dealer claimed that the problem was the Chevrolet Volt Battery Energy Control Module (BECM), GM Part # 24296900, which was covered under the GM hybrid VOLTEC warranty (8 years, 100,000 miles). On [XXX], 2024, this Volt (VIN [XXX] ) was towed to the Dealer again because the Volt would not start, would not charge, and the engine light was on. The Dealer claimed that the hybrid battery connectors were corroded, the disconnect relay should be replaced, and the BECM should be replaced again at a total cost of $5,005.58. On [XXX], GM issued special coverage warranty N232432680 (15 year, 150,000 miles) to cover BECM replacements for a malfunction involving the BECM. Plaintiff checked the VIN at the GM Recall and Warranty Center website. The Volt at issue is covered under special coverage warranty N232432680, according to the GM website. Plaintiff asked the Dealer and GM again after [XXX] about warranty coverage for the BECM at issue. GM responded that the bumper-to-bumper warranty expired and that they would provide no assistance. On [XXX], Plaintiff filed a complaint with the local Better Business Bureau (BBB) regarding the BECM at issue. GM responded in writing that the bumper-to-bumper warranty expired and that they would provide no assistance. Plaintiff sought arbitration, but both the local BBB and the BBB Auto Line found that Plaintiff was not eligible to arbitrate with GM due to GM’s program summary guidelines with the BBB. GM breached multiple warranties and failed to provide sufficient repairs, and this Volt has been out of service for more than 80 days. Based on GM’s warranty breaches, insufficient repairs and inconsistent statements, this Volt poses serious safety concerns. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

No propulsion with U2603 through U2618 DTC in HPCM2 with "shift to park" message. BECM was replaced by dealership.

GM issued a special coverage warranty for 2016-2018 Chevrolet Volts that had a BECM failure. However, they did not include all of the Volts. We have a 2016 that has a catastrophic BECM failure. The car won't start and the only indicator was the day before it said the vehicle didn't charge. This appears to be the same issue, but Chevrolet did not include our model. We have about 87k miles and are only 3 weeks past the original warranty.

Vehicle suddenly lost power and displayed shift to park on display. Vehicle will not respond or display any status other than shift to park. Vehicle towed to dealership. Diagnosis of their mechanic is failed BECM module. Vehicle was brought to dealership 3yrs ago with infotainment center problems. Infotainment Software was updated but problem persisted. 2 years ago it was brought to dealership with complaint of intermittent inability to charge propulsion battery. Sunshine Chevrolet stated their mechanic could not diagnose issue so it was not covered under warranty. I demonstrated intermittent charging issue by plugging vehicle into dealership charger in front of showroom. I was at that time allowed to leave without paying diagnostic charge. 1½ years ago while car was still under warranty car failed to start. Called dealership. They stated it could be 12volt battery. I purchased and replaced battery at dealership. Car started but intermittent charging issue and intermittent infotainment issue continued. GM is refusing to cover BECM replacement saying Car is now out of 8yr warranty time frame.

I picked up my vehicle from Wasler Polar Chevrolet on 7/26/2023 after they claimed to have "repaired" my vehicle. After receiving my vehicle, about 5 miles away from the dealership, my vehicle suddenly quit keeping up with traffic, and lost *all* power equipment. Brakes, steering and acceleration were all unresponsive. The vehicle almost sent me under a semi-trailer, but I quickly forced the steering wheel to the left and engaged the emergency brake, which successfully stopped the car. The vehicle bricked itself, and had to be towed back to the dealership.

While driving suddenly the battery power died (1/3 battery life left) and the ICE came on reving very high and check engine lights came on and vehicle slowed. Pulled over at first spot I could find and tired to restart the car. Car would not power down or restart the ice motor and the electric drive motors stopped working and vehicle would roll backwards once put into drive. Vehicle had to be towed back to dealership. Car would not power down or reset.

I had just left my house about to enter the on-ramp to Interstate 95 south when my 2016 Volt abruptly and without warning stopped. I was unable to coast or pull the car to the side of the road. I was in the middle of the lane in a dangerous place to stop a car and a dangerous place to get out of the car due to the steady traffic entering the interstate. My car would not restart and I had it towed to the Portsmouth NH Chevy dealer. As it was the beginning of the GM strike I had to wait several days for the replacement battery control sensor then I had to wait for another 4 weeks or so for a replacement transmission to be installed. The day after I got my car back, about 2 weeks ago, the transmission fluid was leaking onto the garage floor. The Chevy dealer has ordered new transmission hoses but only one has come in and I was told not to drive my car until these were replaced. The sensor pad and transmission were covered under warranty, I was told the hoses to the transmission and labor to install them are not part of the transmission and not covered. The incident has been extremely inconvenient but the way my car just abruptly stopped and wouldn’t restart was very unnerving and could have been very dangerous. I do not have paperwork at the moment but can provide a dealer invoice of the covered work so far. Please contact me with any questions.

Driving 72mph down I5 interstate the display notified me with a check engine light with two errors, enigne propulsion reduced and engine overheating. I pulled over to the side of the road and called a tow. This was a very traumatic event. I had my partner and my 2 year old daughter in the car.I just purchased this used vehicle from a Toyota dealer the same day. It has 63k miles on it and still under powertrain warranty. I literally drove the car 45 miles. TOTAL. I have spent more time towing and fixing this car than actually driving it. This is a total lemon. I need a refund from GM and all the pain and suffering that this caused my family.

My car, without warning, lost power while driving and then flashed an engine light. This happened on a street and I was able to coast to safety, but if it had happened in an intersection I would not have been so lucky. The problem was confirmed by a dealer as a failure of the Battery Energy Control Module, which has been happening to this car with numerous other owners, according to the Volt owner website.

When attempting to power down the car, a message, “Action required, Shift to Park” appears and car will not power down. After repeated attempts, sometimes requiring 10 or more, by re-starting the car and attempting to power down, it has eventually powered down. This problem is intermittent and the car WILL power down successfully repeated times, and then do it’s “shift to park” refusal to power down. There are hundreds of complaints on the GM Volt owners’ forum and even a Technical Service Bulletin No. 19-NA-206 dated February 2020 (maybe even more recent, but that’s the latest one I know of). The service bulletin also includes the Chevy Blazer, Malibu, Traverse and GMC Acadia (which, I understand, there is now a class action suit in that regard). If the car will not power down, it could drain the battery and leave the driver stranded, as well as making the car unable to be locked, which could also be a safety issue.

Action Required Shift to Park message comes up on the dash after starting the vehicle & shifting into gear out of Park. The message goes away when shifted back into Park, but the vehicle doesn't respond when shifted into gear. Reverse, Neutral, Drive, Low - none will engage. I had to repeat the process of starting the vehicle 28 times before it would operate as it should. Start Vehicle to View Application message comes up when in Park & trying to shut the vehicle off & will not power down until the driver door is opened. I worried that I'd be stranded if this continued to happen & took the vehicle to Brad Deery Motors in Maquoketa, IA for repair on 4/14/22. I paid $736.71 & the invoice states: 106128 shift to park, diag, intermittent open in the shift park solenoid, replaced shift park solenoid and jumper harness, tested working properly. I brought the vehicle home & had the same messages appear on 4/19/22. I have since read a forum on the Volt & understand that this has been a common issue & found a service bulletin: 19-NA-206, but wondering if there is an actual recall. I plan to contact GM regarding this issue.

Action Required Shift to Park message comes up on the dash after starting the vehicle & shifting into gear out of Park. The message goes away when shifted back into Park, but the vehicle doesn't respond when shifted into gear. Reverse, Neutral, Drive, Low - none will engage. I had to repeat the process of starting the vehicle 28 times before it would operate as it should. Start Vehicle to View Application message comes up when in Park & trying to shut the vehicle off & will not power down until the driver door is opened. I worried that I'd be stranded if this continued to happen & took the vehicle to Brad Deery Motors in Maquoketa, IA for repair on 4/14/22. I paid $736.71 & the invoice states: 106128 shift to park, diag, intermittent open in the shift park solenoid, replaced shift park solenoid and jumper harness, tested working properly. I brought the vehicle home & had the same messages appear on 4/19/22. I have since read a forum on the Volt & understand that this has been a common issue & found a service bulletin: 19-NA-206, but wondering if there is an actual recall. I plan to contact GM regarding this issue.

There is a “Shift to park” message on the driver information screen when attempting to shut off vehicle. I don’t know if the vehicle is still in gear and will move (forward or back) when I think it is in Park. I have not had it in for inspection/repair yet, as it is a recent occurrence that is becoming increasingly frequent. This started happening around 11/15/2021.

When parking vehicle a "Shift To Park" error appears on the dash and vehicle will not turn off for some time. This is an intermittent issue that seems to be getting more frequent as time goes on. Vehicle can be stolen if issue is unnoticed.

My 2016 Chevy Volt has an issue where the is an intermittent shift to park message displayed while the vehicle in in park. This issue has been identified as a widespread issue and Chevrolet has published a Service Bulletin (NHTSA Technical Service Bulletin 19-NA-206). The most recent version is Version 6 that was published in December 2020. The dealership is refusing to perform repairs that are clearly under warranty. The service bulletin specifically says it is covered under the warranty.

Vehicle Shifter does not correctly register the vehicle is in park. Does not allow the vehicle to be turned off. This is a common issue experienced by Gen2 Volt owners and well known by GM Service Tech and GM has not yet issued a recall. There is a potential safety issue if someone believes the vehicle is parked and exits the vehcile and the car is left running. Potential Driver Confusion on the park status could lead to the vehicle continuing to run or being put back in gear. GM needs to issue a recall for Gen2 Volts - 2016 and on.

WHEN I PUT THE CAR IN PARK AND TRY TO TURN IT OFF, I FREQUENTLY GET AN ERROR ON THE GAUGE DISPLAY THAT SAYS "ACTION REQUIRED, SHIFT TO PARK." THIS IS VERY FRUSTRATING. WHEN THIS ERROR HAPPENS, I'M UNABLE TO POWER OFF THE CAR OR LOCK THE DOORS. I TURN THE CAR BACK ON, JIGGLE THE SHIFTER OR MOVE IT INTO DRIVE AND BACK TO PARK, AND THEN TRY TURNING THE CAR OFF AGAIN. SOMETIMES I HAVE TO GO THROUGH THIS PROCESS 5 OR MORE TIMES BEFORE THE CAR WILL POWER DOWN. THIS ERROR HAPPENS ABOUT HALF THE TIME THAT I USE MY CAR, WHICH MAKES IT A DAILY PROBLEM. I BOUGHT THE CAR USED IN OCT 2019, AND THE PREVIOUS OWNER ALSO HAD THE PROBLEM BUT I DON'T KNOW WHEN IT STARTED FOR HIM.

Mileage: 46,000

AN ERROR APPEARS "SHIFT TO PARK" WHEN PARKING. THE CAR DOES NOT RECOGNIZE THAT IT IS SHIFTED TO PARK THUS IT CONTINUES TO RUN. A RUNNING VEHICLE THAT CANNOT BE TURNED OFF AND CAN RUN ON GAS IS A CONSIDERABLE HAZARD. THE GM FORUM FOR VOLTS CONTAINS MANY SUCH MESSAGES FOR 2016 VOLTS AND A PROBLEM WITH THE SAME SYSTEM ERROR LED TO A RECALL IN 2017 VOLTS. THE PROBLEM IS OCCURRING WITH INCREASING FREQUENCY IN THIS CAR, STARTING A FEW MONTHS AGO.

Mileage: 49,061

WHEN PARKING THE CAR THERE'S A CHANCE FOR THE ERROR "SHIFT TO PARK" TO OCCUR WHEN TRYING TO TURN OFF THE CAR,. THIS IS DUE TO A DEFECTIVE SWITCH THAT WEARS OUT WITHIN THE SHIFTER ASSEMBLY. THE ERROR STARTS TO BECOME MORE AND MORE COMMON AS TIME GO ON. IT IS TOO EASY TO ACCIDENTALLY LEAVE THE CAR "ON" WHEN SHIFTING THE CAR TO PARK AND STEPPING OUT OF THE CAR AND USING THE PUSH TO STOP. THE ONLY KNOWN WORKAROUND IS TO FLICK THE SHIFTER BUTTON UNTIL THE CAR REGISTERS THAT THE CAR IS NOW SHIFTED TO PARK. THIS IS A RECURRING AND WELL KNOWN ISSUE IN THE CHEVY VOLT COMMUNITY. IT'S PREDICTED THAT ALL 2016+ CHEVY VOLTS WILL EVENTUALLY DEVELOP THIS ISSUE DUE TO THE DEFECTIVE DESIGN OF THIS SWITCH. I HAVE ANOTHER VOLT IN THE FAMILY THAT'S ALREADY HAD THE SHIFTER REPLACED BECAUSE OF THIS SAME ISSUE.

Mileage: 34,000

AFTER 100K MILES RIGHT WHEN MY WARRANTY ENDS, I'M GETTING THE SHIFT TO PARK ERROR MESSAGE, CONSTANTLY HAVING TO POWER UP THE VEHICLE OFF AND ON IS ANNOYING. I I FEEL LIKE THE CAR IS BREAKING MORE. VERY UNSAFE.

Mileage: 100,000

AFTER PUTTING THE SHIFT LEVER IN PARK, THEN POWERING THE VEHICLE OFF THE DASHBOARD WOULD ADVISE TO SHIFT THE VEHICLE IN PARK. COULD NOT LOCK VEHICLE, LIGHTS WOULD REMAIN ON. THIS COULD BE WORKED AROUND BY PRESSING THE SHIFTER KNOB A FEW TIMES TO CLEAR THE MESSAGE. BROUGHT VEHICLE IN FOR REGULAR SERVICE, WAS ADVISED THERE WAS A SHORT IN THE WIRING HARNESS RELATED TO THE SHIFTER KNOB. HARNESS WAS REPLACED, ISSUE HAS NOT REPEATED. IT HAS BEEN NOTED ONLINE THAT THIS IS A COMMON ISSUE WITH GENERATION 2 VOLTS, I WANTED TO ADD MY VEHICLE TO THE LIST OF THOSE AFFECTED.

Mileage: 48,000

WHEN PUTTING SHIFTER TO PARK, THE ACTION REQUIRED MESSAGES IS SHOWN AS: 'SHIFT TO PARK' ISSUE. THE CAR WILL EFFECTIVELY NOT TURN OFF. YOU'LL BE UNABLE TO LOCK THE CAR AND THE LIGHTS WILL STAY ON FOR A FEW MINUTES. WORSE YET, IT IS INTERMITTENT ALTHOUGH IT GENERALLY GETS WORSE OVER TIME.

THE VEHICLE DOES NOT RECOGNIZE IT HAS BEEN SHIFTED INTO PARK, WHICH DOES NOT ALLOW THE VEHICLE TO BE TURNED OFF. DASH DISPLAY STATES 'ACTION REQUIRED, SHIFT TO PARK'. THIS HAPPENS CONSISTENTLY AND IS A KNOWN ISSUE BY CHEVROLET. YET THEY HAVE NOT ISSUED ANY RECALL. IT IS KNOWN AS THE 'SHIFT TO PARK' ISSUE. THERE IS NO WORK-AROUND FOR THE ISSUE OTHER THAN SHIFTING BACK AND FORTH INTO GEARS, SOMETIMES HUNDREDS OF TIMES, BEFORE THE ERROR CLEARS. FOR EXAMPLE: MY WIFE TOOK MY DAUGHTER TO AN EMERGENCY ROOM AND COULD NOT GET THE VEHICLE TO TURN OFF. SHE TRIED TO CLEAR THE ERROR A FEW TIMES BEFORE HAVING TO LEAVE THE VEHICLE RUNNING IN THE PARKING LOT.

Mileage: 36,000

KEEP GETTING ACTION REQUIRED MESSAGE "SHIFT TO PARK" EVEN THOUGH THE CAR HAS BEEN POWERED OFF. IT TAKES ABOUT 5 TRYS NOW TO ACTUALLY POWER OFF THE CAR, HAVE TO REPEATEDLY TURN THE CAR ON AND OFF TO ACTUALLY POWER OFF THE VEHICLE.

Mileage: 60,000

WHILE TURNING OFF VEHICLE: VEHICLE IS SHIFTED TO PARK IGNITION BUTTON IS PRESSED MESSAGE APPEARS ON CONSOLE 'ACTION REQUIRED: SHIFT TO PARK' VEHICLE WILL NOT TURN OFF WITH PRNDL IN PARK POSITION

Mileage: 45,000

SYSTEM DOES NOT RECOGNIZE WHEN GEAR IS IN PARK (P) - THE PROMPT ON THE SCREEN STATES "ACTION REQUIRED: SHIFT TO PARK" (SEE ATTACHED SCREENSHOT) EVEN WHEN THE GEAR IS ALREADY ON PARK (P) - THE WORK-AROUND IS SHIFTING THE GEAR FROM PARK (P) THEN L THEN BACK TO PARK - SOMETIMES YOU HAVE TO DO THIS SEVERAL TIMES. *TR

UNABLE TO TURN OFF CAR WHEN SHIFTER IS PHYSICALLY SHIFT TO PARK, BUT DASH WARNING HAS A "SHIFT TO PARK" WARNING. BACK IN DEC 26 I BOUGHT THE CAR IN FOR THE SAME ISSUE AND THE SHIFTER CABLE WAS REPLACED. BUT SHIFT TO PARK WARNING RETURNED A FEW MONTHS LATER. IT IS A MATTER OF TIME BEFORE THIS ISSUE WILL RETURN . *TR

Mileage: 30,742

SHIFT TO PARK ISSUE. WHEN TRYING TO TURN OFF THE CAR YOU PUT IN PARK AND PRESS ON/OFF BUTTON. CAR SAYS YOU NEED TO SHIFT INTO PARK EVEN THOUGH YOU HAVE SHIFTED INTO PARK AND IS SO INDICATED ON THE DASH. YOU HAVE TO SHIFT THE SHIFTER AND TURN ON AND OFF UNTIL FINALLY TURNS OFF. CRAZY AND A KNOW PROBLEM. DANGEROUS AND NEED A RECALL.

CAR SAYS "SHIFT TO PARK" AT RANDOM, WHEN CAR IS ALREADY IN PARK. PREVENTS YOU FROM POWERING OFF THE VEHICLE, AND HAVE TO SOMETIMES WIGGLE THE SHIFTER BEFORE IT WILL DETECT IT IS ACTUALLY IN PARK.

Mileage: 40,000

VARIOUS TIMES WHEN PUTTING THE CAR INTO PARK AND THEN TURNING OFF THE CAR THE MESSAGE STATING ACTION REQUIRED: SHIFT TO PARK WILL SHOW ON THE CONSOLE SCREEN. THE CAR WILL NOT TURN OFF UNTIL THE CAR RECOGNIZES THE GEAR IS IN THE PARK POSITION, WHICH IT ALREADY IS. IT TAKES SOME SHAKING OF THE SHIFT BUTTON TO GET THE CAR TO REGISTER THAT THE GEAR IS IN THE PARK POSITION. IT USED TO HAPPEN MAYBE ONCE A MONTH BUT NOW IT SEEMS TO HAPPEN A FEW TIMES EACH WEEK.

Mileage: 71,114

2016 GEN 2 CHEVY VOLT EXPERIENCING ERROR MESSAGE OF 'SHIFT TO PARK' EVEN THOUGH CAR IS IN PARK. CAR WILL NOT TURN OFF UNTIL MESSAGE CLEARED AND THAT TAKES SEVERAL ATTEMPTS. ISSUE IS WIDESPREAD BASED ON INTERNET SEARCH. ALSO, TRANSMISSION COOLING FLUID LEAK FROM TRANSMISSION COOLANT INTAKE LINE REQUIRING COMPLETE REPLACEMENT.

Mileage: 63,500

THIS IS AN UPDATE TO MY ORIGINAL COMPLAINT #:11299056 FOR UN-COMMANDED ACCELERATION ON 1/13/2020. THE CHEVY DEALERSHIP WORKED WITH GM CORPORATE ENGINEERS AND WERE UNABLE TO DUPLICATE THE PROBLEM AFTER SEVERAL DAYS. THE RETURNED THE CAR AND BLAMED IT ON THE FLOOR MAT. THIS IS NOT LIKELY SINCE THE MAT IS A OEM HEAVY RUBBER MAT AND THE ACCELERATOR PEDAL DOES NOT REST ON THE FLOOR BOARD. SINCE THE CAR WAS RETURNED AND DRIVING FOR WEEKS, I NOTICED THE BATTERY RANGE WILL NOT CHARGE MORE THAN 49 MILES OF ELECTRICAL CHARGE WHEN IT OFTEN CHARGED UP INTO THE 50-60 MILE RANGE PRIOR TO THE INCIDENT. I'VE BEEN DRIVING THE CAR IN SLOWER HEAVY TRAFFIC LATELY AND THIS DRIVING STYLE OFTEN INCREASES ELECTRIC MILEAGE RANGE AFTER A FULL NIGHTS CHARGE. IT WILL NOT DO SO ANYMORE EVEN THOUGH THE ECONOMY MANAGEMENT SCREEN INDICATE MAXIMUM RANGE ECONOMY OF OVER 250 MPG. I'M A RETIRED GAS TURBINE MECHANIC AND I KNOW A PROBLEM WHEN I EXPERIENCE ONE. I SUSPECT THAT A BATTERY CELL MAY HAVE HAD AN UNCONTROLLED DISCHARGE AND IS NO LONGER ABLE TO ACCEPT A RECHARGE. I HAVE RELAYED THIS INFORMATION TO THE DEALER. NO RESPONSE YET.

Mileage: 40,000

CAR WON'T SHUT DOWN AND STATES SHIFT TO PARK ON SCREEN WHILE CAR IS IN PARK. SHIFT ASSEMBLY IS BAD.

Mileage: 25,300

UN-COMMANDED VEHICLE ACCELERATION UNDER FULL ELECTRIC DRIVE MODE (TWICE). WHILE DRIVING STEADY AROUND 65 MPH ON THE FREEWAY (NO CRUISE CONTROL USED), A SLIGHT STEP ON THE ACCELERATOR, CAUSED THE CAR IMMEDIATELY ACCELERATED UP TO 88 MPH (DASH SHOW LARGE ELECTRICAL DRAW OF BATTERY POWER). STEPPING ON THE BRAKE, USING THE REGEN PADDLE ON THE STEERING WHEEL AND REPEATED PRESSING THE CRUISE CONTROL POWER DIDN'T DISENGAGE THE POWER SURGE. CAR WOULD ACCELERATE WHEN BRAKE PRESSURE WAS LIFTED. AFTER REPEATED HARD PRESSING OF THE BRAKE PEDAL, THERE WAS A "CLACK" SOUND FROM BELOW THE DRIVER CONSOLE AND THE CAR RETURNED TO NORMAL. BEING ON THE FREEWAY, I WAS NOT ABLE TO PULL OVER AND RESTART/REBOOT THE CAR. I CONTINUED TO DRIVE CAUTIOUSLY, MONITORING THE CAR AND LEFT THE FREEWAY FOR SURFACE STREETS. EVERYTHING SEEMED TO BE OKAY UNTIL I CAME TO A COMPLETE STOP BEHIND TRAFFIC. WHEN TRAFFIC STARTED MOVING AGAIN, I LIGHTLY DEPRESSED THE ACCELERATOR PEDAL AND THE CAR BEGAN ACCELERATING QUICKLY ON IT'S OWN. SEVERAL HARD PRESSES OF THE BRAKE PEDAL AND THE CAR RETURNED TO NORMAL. THIS SECOND INCIDENT WAS NOT AS VIOLENT AND THE FIRST AND THERE WAS NO "CLACK" SOUND FROM BELOW THE DRIVER DASH AS WITH THE FIRST. THIS IS WORRISOME AND CANNOT BE RELATED TO THE CRUISE CONTROL SINCE IS WAS AT A STOP AND CC ISN'T SUPPOSED TO ENGAGE UNDER 25 MPH. THE REST OF THE SEVERAL MILES TO MY WORK WAS UNEVENTFUL. I'VE CONTACTED THE DEALER ABOUT THE SAFETY OF DRIVING IT OR HAVING IT TOWED. WAITING FOR THEIR RESPONSE. I IMAGINE THE ON-BOARD COMPUTER WOULD'VE STORED TODAY'S DRIVING DATA.

Mileage: 40,000

WHEN PARKING THE CAR AFTER HAVING STOPPED, ANT ERROR MESSAGE 'SHIFT TO PARK' APPEARS ON THE DISPLAY EVEN THOUGH THE SHIFTER WAS IN PARK. THIS PROBLEM PREVENTS CAR FROM BEING TURNED OFF.

Mileage: 38,532

UNABLE TO TURN OFF POWER TO CAR WITH ERROR ON DASHBOARD SAYING SHIFT TO PARK. HAVE TO POWER ON AND OFF SEVERAL TIMES WHILE MOVING THE SHIFTER IN AND OUT OF PARK TO GET THE CAR TO TURN OFF.

Mileage: 29,368

THIS VEHICLE HAS A SHIFT TO PARK MESSAGE THAT BEEN SEEN ON MANY GM VEHICLES. SOME OF THE OWNER SITES I HAVE BEEN TO SAY THAT THIS IS COVERED UNDER WARRANTY. I HAVE NOT BEEN SO LUCKY WITH GM. THE DEALER DID COVER 1 REPAIR OF THIS PROBLEM BUT NOW SAYS I HAVE TO PAY. THE PROBLEM HAS RETURNED AND PERSISTS. A SHIFT TO PARK MESSAGE IS DISPLAYED ON THE DASH AFTER THE CAR IS IN PARK AND WILL NOT SHUTDOWN. I HAVE ATTACHED ALL THE DOCUMENTATION THAT I HAVE.

Mileage: 30,217

SENSOR DOES NOT RECOGNIZE WHEN CAR IS IN PARK. CONTINUES TO RUN AND WILL NOT TURN OFF WHEN IN PARK. ERROR MESSAGE DISPLAYED IS "SHIFT TO PARK" EVEN WHEN IN PARK. THIS IS A SAFETY ISSUE BECAUSE CAR WILL NOT DISENGAGE OR TURN OFF. THIS OCCURS FREQUENTLY.

Mileage: 21,000

SHIFT TO PARK DISPLAYS AFTER YOU'VE SET THE CAR TO PARK.

ALL VEHICLE SYSTEMS ARE NOT REGISTERING THAT THE VEHICLE IS IN PARK WHEN THE SHIFTER IS IN THE PARK POSITION. THE INSTRUMENT CLUSTER GEAR INDICATOR REGISTERS THE VEHICLE AS IN PARK, BUT WHEN ATTEMPTING TO POWER DOWN THE VEHICLE AN ERROR MESSAGE OCCURS DIRECTING THE DRIVER TO SHIFT THE VEHICLE INTO PARK. WHEN EXITING THE VEHICLE THE DOORS WILL NOT LOCK.

Mileage: 39,000

WHEN VEHICLE IS SHIFTED INTO PARK POSITION AND ENGINE IN POWERED OFF, THE DASH READS OUT THAT VEHICLE MUST BE IN PARK POSITION. I HAVE TO JIGGLE THE SHIFTER OR DEPRESS THE BUTTON SEVERAL TIMES TO ENGAGE INTO PARK POSITION. IF THIS IS IGNORED THE VEHICLE DOES NOT REGISTER IN PARK AND CANNOT SAFELY BE LEFT UNATTENDED. THIS OCCURRENCE HAS BEEN HAPPENING FOR OVER A MONTH AT A DAILY RATE. THE DEALERSHIP DOES NOT HONOR THE POWER TRAIN WARRANTY FOR THIS ISSUE.

MY VEHICLE WAS STATIONARY IN A LEFT TURN LANE AT AN INTERSECTION. I TOOK MY FOOT OFF THE GAS AND PRESSED THE GAS PEDAL TO ACCELERATE THE CAR THROUGH THE INTERSECTION. WHEN I PRESSED THE GAS, THE CAR DID NOT ACCELERATE. I REPEATEDLY TRIED TO ACCELERATE AND THE CAR SEEMED TO NOT EVEN IDLE BECAUSE IT WOULD ROLL BACKWARDS WHEN THE BRAKE WAS RELEASED. AFTER A WHILE THERE WAS SOME WEIRD NOISES AND THE CAR DID SOME UNUSUAL SHAKING. I ALSO OBSERVED ON MY DASHBOARD THAT THE CAR WAS SWITCHING BETWEEN THE ELECTRIC BATTERY POWER AND THE GAS FUEL POWER. I WAS NOT CLICKING ANYTHING TO DO THIS IT WAS DOING IT WHILE I HAD MY FOOT ON THE BRAKE AND WAS TOUCHING NOTHING ELSE. AFTER ABOUT AN HOUR AND MANY TRIES THE GAS FINALLY ENGAGED AND I WAS ABLE TO PULL THE VEHICLE INTO A NEARBY PARKING LOT BUT THERE WERE STILL VARIOUS NOISE PROBLEMS AND SHAKING. HAD THE VEHICLE TOWED TO THE DEALERSHIP TO HAVE IT SERVICED. THE DEALERSHIP SAID THE TRANSMISSION FAILED AND A NEW ONE WAS SENT AND PUT INTO THE VEHICLE. THE VEHICLE ONLY HAD 1080 MILES ON IT.

Mileage: 1,080