2008 Chevrolet Impala Engine Problems

THE CAR NEEDS AND BURNS TOO MUCH OIL AND IT'S A COMMON PROBLEM THERE'S A LOT OF PEOPLE COMPLAINING ABOUT PLEASE HELP I HAVE TO CHANGE OIL EVERY 2 MONTHS AND THERE'S NO LEAKS OR ANYTHING JUST THAT IT BURNS OIL TOO QUICK

THIS COOLANT CROSSOVER PIPE GASKET LEAK HAS BEEN A REPEATED AND MULTIPLE VEHICLE PROBLEM WITH THE 3.9L AND 3.5L AND GM ONLY CAME UP WITH 2 TECHNICAL SERVICE BULLETINS; THE LAST ONE WAS #07-06-02-006E: COOLANT LEAKING FROM ENGINE (REPLACE COOLANT CROSSOVER PIPE GASKETS) - (MAR 5, 2012). HOWEVER, THE NEW GASKET DESIGN PRESUMABLY REPAIRED THE LEAK. HOWEVER, IT DID NOT. I HAVE SEEN THIS ISSUE DISCUSSED ON SEVERAL WEB SITES WITH ALL COMPLAINING ABOUT THE SAME UNRESOLVED ISSUE. MY 2008 IMPALA WITH THE 3.9L V-6 HAS BEEN REPAIRED FOR THIS ISSUE ON THE FOLLOWING DATES, EACH TIME I WAS ASSURED IT WAS SATISFACTORILY REPAIRED: 02/09/2019 ' DIY DUE TO DEALERSHIP COST. REPAIRED PER GM TSB/GM TECHNICAL SERVICE MANUAL. 11/30/2016 ' DEALERSHIP. 03/10/2014 ' DEALERSHIP. 01/11/2013 ' DEALERSHIP. AND NOW, IT'S LEAKING AGAIN! I CHATTED WITH CHEVROLET ONLINE ON 10 APR 2020 AND CECIL SAID THAT WARRANTY HAD REPAIRED IT ONCE, BUT THE ISSUE HAS BEEN AND STILL CONTINUES. GM WOULD NO LONGER REPAIR THE LEAK. THIS IS WHAT I WAS TOLD: CECIL AT 15:40, APR 10, 2020: UNFORTUNATELY, ONCE THE DECISION IS FINAL THAT IT CANNOT BE CHANGED ANYMORE. BUT HERE IS WHAT WE SUGGEST, YOU CAN TAKE THE VEHICLE TO A CERTIFIED GM DEALERSHIP ABOUT THIS TO HAVE IT DIAGNOSED AND IT MIGHT THE SAME SYMPTOM BUT DIFFERENT ROOT CAUSE. WE CANNOT PERFORM DIAGNOSIS OVER CHAT. CECIL AT 15:41, APR 10: AND FOR ASSISTANCE, I HIGHLY SUGGEST THAT YOU SPEAK WITH THE CUSTOMER EXPERIENCE MANAGER OR CEM AT THE DEALERSHIP. HOWEVER, THE DEALERSHIP IS THE ONE WHO TOLD ME THAT IT COULD NO LONGER BE COVERED UNDER WARRANTY! THIS ISSUE IS SOMETHING GM SHOULD HAVE LONG RESOLVED WITH A BETTER SOLUTION. THIS LEAK IS A CONTINUAL PROBLEM AND GM DOESN'T OFFER ANY BETTER REPAIR OPTIONS AND WILL NOT REPAIR THE LEAK AGAIN.

MY CAR JUST STOPPED IN THE MIDDLE OF THE ROAD IN HEAVY TRAFFIC OF 45 MPH. WEATHER WAS ABOUT 90 DEGREES F.. MESSAGE ON DASH WAS "STARTING DISABLED SERVICE THROTTLE." I AM LUCKY NOT TO HAVE BEEN SERIOUSLY HURT OR KILLED. AFTER PUSHING IT TO A SIDE STREET, IT STARTED AGAIN AND SHOWED "REDUCED ENGINE POWER" AND WENT ABOUT 20 MPH. I SAW ONLINE THIS IS COMMON PROBLEM WITH MANY CHEVROLETS. WHY NO RECALL? SO DANGEROUS. REPAIR IS ESTIMATED AT $750.

TL* THE CONTACT OWNS A 2008 CHEVROLET IMPALA. THE CONTACT STATED THAT THE REDUCE POWER INDICATOR ILLUMINATED AND THE VEHICLE STALLED. THE VEHICLE WAS RESTARTED AND WAS ABLE TO DRIVE NORMALLY. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHO DIAGNOSED THAT THE THROTTLE BODY, THROTTLE BODY SENSOR, AND FUEL PEDAL SENSOR NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED, BUT THE FAILURE RECURRED. THE VEHICLE WAS TAKEN BACK TO THE INDEPENDENT MECHANIC WHO DIAGNOSED THAT THE MASS AIR FLOW SENSOR FAILED AND NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED. THE CONTACT STATED THAT THE VEHICLE WAS TAKEN TO THE INDEPENDENT MECHANIC FIVE TIMES FOR THE SAME FAILURE. THE MECHANIC ALSO STATED THAT THE SPARK PLUGS FAILED AND NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED, BUT THE FAILURE CONTINUED. THE MANUFACTURER AND DEALER WERE NOT MADE AWARE OF THE FAILURES. THE FAILURE MILEAGE WAS APPROXIMATELY 205,000. THE VIN WAS NOT AVAILABLE.

LIGHTS CAME ON DASH SERVICE THROTTLE, REDUCED ENGINE POWER. I WAS DRIVING DOWN THE HIGHWAY ON 8/16/2018 GOING 55 WHEN THE CAR STARTED TO CHATTER AND I STRUGGLED TO PULL OVER TO THE SIDE OF THE ROAD, I ALMOST WAS REAR ENDED BECAUSE IT WAS SO SUDDEN. I SHUT THE CAR OFF AND LET IT SIT FOR A BIT THEN IT STARTED AND I WENT ON. TODAY IT DID IT AND IT STILL WONT START AFTER HOURS.

WHEN MY IMPALA IS IN MOTION WITHIN THE MINUTES IT STATES ENGINE POWER REDUCED AND IT SLOWS DOWN THE CAR. IF I DRIVE 60 MPH OR MORE WHEN ENGINE POWER IS REDUCED THEN IT SAYS SERVICE SHUTTLING DOWN AND THE CAR WILL COMPLETELY SHUT DOWN IT'S A BIG SAFETY HAZARD ESPECIALLY WHEN I'M ON THE FREEWAY.

TL* THE CONTACT OWNS A 2008 CHEVROLET IMPALA. AS SOON AS THE VEHICLE WAS STARTED, THE REDUCE ENGINE POWER AND SERVICE TRACTION CONTROL WARNING INDICATORS ILLUMINATED. THE CONTACT DROVE THE VEHICLE FOR APPROXIMATELY 6 MILES AT 25 MPH BEFORE THE VEHICLE STALLED. THE ENGINE POWERED OFF AND THE STARTER DISABLED WARNING INDICATORS ILLUMINATED. THE CONTACT HAD TO COAST THE VEHICLE TO THE SIDE OF THE ROAD TO A COMPLETE STOP. AFTER A FEW MINUTES, THE VEHICLE RESTARTED AND OPERATED NORMALLY. THE VEHICLE WAS NOT DIAGNOSED NOR REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURES. THE VIN WAS UNKNOWN. THE APPROXIMATE FAILURE MILEAGE WAS 129,000. UPDATED 08/30/16*LJ

TL* THE CONTACT OWNS A 2008 CHEVROLET IMPALA. WHILE DRIVING 30 MPH, THE CHECK ENGINE WARNING LIGHT ILLUMINATED AND THE VEHICLE JERKED SEVERELY. IN ADDITION, THE BRAKES WERE UNRESPONSIVE. THE CONTACT PULLED OVER TO RESTART THE VEHICLE, BUT THE FAILURE RECURRED. THE CONTACT MENTIONED RECONNECTING A VACUUM HOSE AFTER OBSERVING THAT IT WAS DISCONNECTED FROM THE POWER BOOSTER. AFTERWARDS, THE BRAKES BECAME RESPONSIVE. THE VEHICLE WAS TAKEN TO THE DEALER WHERE IT WAS DIAGNOSED THAT THE THROTTLE POSITION SENSOR FAILED AND NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED, BUT THE FAILURE RECURRED. THE VEHICLE WAS TAKEN TO THE DEALER ONCE MORE WHERE IT WAS DIAGNOSED THAT THE CATALYTIC CONVERTER FAILED AND NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 81,000. UPDATED 03/04/16*LJ *TR

HELLO, ONLY HAD MY CAR 2 YEARS AND NOTHING BUT PROBLEMS..MY BIGGEST CONCERN IS THIS LIGHT THAT'S KEEPS COMING ON AND SAYS "ENGINE POWER REDUCED" AND KICKS MY CARS DOWN BETWEEN 20 AND 40 MILES PER HOUR..HUGE SAFETY ISSUE TO ME. I WAS DRIVING WITH MY 3 CHILDREN ON THE HIGHWAYS WHEN OUT OF NOWHERE MY CAR REDUCED TO 20 MILES ON THE HIGHWAY!!! I WAS SCARED AS WELL AS MY CHILDREN AND HAD TO EXIT THE HIGHWAY AS SAFELY AS POSSIBLE. NOW I HAVE DONE SOME INVESTIGATION ABOUT THIS AND SEE MANY PEOPLE ARE HAVING THE SAME ISSUES HOW HORRIBLE. WHY IS THERE NOT A RECALL FOR THIS? MY LIFE AND MY CHILDREN'S LIVES ARE A FACTOR AND IT'S TERRIFYING THAT NOTHING IS GETTING DONE ABOUT THIS BUT IS KNOWN BY THE MAKERS OF THIS VEHICLE..PLEASE I WOULD LIKE SOME ANSWERS AND SOMETHING DONE ABOUT THIS. I AM A NURSE OUT HERE SAVING LIVES EVERYDAY AND I CAN'T JUST AFFORD TO KEEP TRYING TO FIX A PROBLEM WITH A CAR THAT NOBODY HAS A REAL ANSWER ON WHY IT'S DOING THIS. I HAVE NO OPTION TO STILL DRIVE THIS VEHICLE AS WELL AS MANY OTHER HARD WORKING PEOPLE WHO HAVE SPENT THEIR HARD WORKING MONEY ON THESE VEHICLES AND COMPANY. THANK YOU FOR YOUR TIME AND CONSIDERATION WITH THIS MATTER. *TR

ENGINE OIL LEAKS, VALVE COVER GASKETS, HEAD GASKETS, OIL PAN GASKET. CAN SMELL BURNING OIL WHEN DRIVING & PARKED. AFTER DRIVING.

TL* THE CONTACT OWNS A 2008 CHEVROLET IMPALA. WHILE DRIVING AT APPROXIMATELY 35 MPH, THE VEHICLE STALLED AND THE STARTING THROTTLE DISABLED WARNING MESSAGE ILLUMINATED. THE VEHICLE RESTARTED AND RESUMED NORMAL OPERATION. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 166,000.

THE REDUCED POWER LIGHT CAME ON WHILE I WAS DRIVING. I CHECKED ONLINE AND IT SEEMS LIKE A LOT OF PEOPLE ARE HAVING THIS PROBLEM. IT IS A MAJOR CONCERN BECAUSE IT WILL SLOW YOUR VEHICLE DOWN IF YOUR GOING AT HIGH SPEEDS. *TR

"REDUCED ENGINE POWER" MESSAGE IS DISPLAYED AND THE CAR SLOWED TO ABOUT 20 MPH. HAD THIS BEEN THE HIGHWAY WE COULD HAVE HAD A SERIOUS ACCIDENT. ACCORDING TO VARIOUS BLOGS ON THE INTERNET GM IS IGNORING THIS LIFE THREATENING DEFECT. I WOULD PAY FOR A FIX BUT THERE DOESN'T SEEM TO BE ONE AT THIS TIME. I WILL GIVE A CHEVY DEALER A CHANCE TO MAKE IT RIGHT BUT AM NOT HOLDING MY BREATH. *TR

TL* THE CONTACT OWNS A 2008 CHEVROLET IMPALA. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 35 MPH, THE VEHICLE STALLED AND THE ENGINE LOSING POWER WARNING LIGHT ILLUMINATED. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 90,000. THE VIN WAS NOT AVAILABLE.

WHILE DRIVING MY CAR THE SPEED REDUCED ITSELF FROM 40MPH TO 5 MPH AND THE CHECK ENGINE LIGHT CAME ON ALONG WITH REDUCED ENGINE POWER ACROSS MY DASHBOARD. THE CAR STARTED SHAKING AND JERKING. IT THEN SHUT OFF WHILE I WAS DRIVING IT. I HAD IT TOWED THE NEXT DAY TO THE REPAIR SHOP AND THEY SAID A SENSOR WAS BAD IN THE GAS PEDAL AND REPLACED THE WHOLE PEDAL. 4 DAYS LATER IT DID THE SAME THING. AGAIN IT STARTED SHAKING AND JERKING THEN SHUT ITSELF OFF. I TOOK IT BACK TO THE REPAIR SHOP BUT BY THE TIME THEY COULD READ THE CODES THE CAR HAD BEEN SHUT OFF LONG ENOUGH THAT THEY COULDN'T FIND ANYTHING. THEY CLEANED THE THROTTLE BODY AND GAVE IT BACK. THE NEXT DAY IT DID THE SAME THING. I AGAIN TOOK IT BACK AND DID NOT SHUT IT OFF TIL THEY READ THE CODES. IT READ THE THROTTLE BODY WAS BAD. THEY REPLACED IT AND GAVE THE CAR BACK. 30 MILES LATER, IT STARTED ALL OVER AGAIN. I HAVE SPOKE TO GENERAL MOTORS AND THEY REFUSE TO DO ANYTHING ABOUT THIS ISSUE EVEN THOUGH THERE ARE SEVERAL FORUMS ON THE WEB WITH IMPALAS DATING BACK TO 2005 HAVING THIS SAME ISSUE. THIS IS GOING TO CAUSE AN ACCIDENT AND HURT/KILL PEOPLE IF ITS NOT ADDRESSED SOON. *TR

VEHICLE OUT OF THE BLUE SAYS "REDUCING ENGINE SPEED" AND THEN CAR SLOWS DOWN AND CAN NOT SPEED UP IN TRAFFIC CARS ABOUT TO RUN OVER ME WONDER WILL THIS HAPPEN ON THE HIGHWAY? *TR

I WAS GOING 65 MPH ON THE FREEWAY AND OUT OF NOWHERE MY ENGINE WENT INTO POWER REDUCE MODE WITHOUT WARNING AND I ALMOST GOT REAR ENDED BAD WITH MY CHILD IN THE CAR WITH ME. I DID GET TAPPED FROM BEHIND BUT REALLY NOTHING MAJOR BUT IT COULD HAVE BEEN WORSE THANK GOD I WAS ABLE TO WALK AWAY FROM THAT. MIND YOU I JUST PICKED MY CAR UP THAT FRIDAY FROM THE CHEVROLET DEALERSHIP THEY CHANGED THE THROTTLE BODY AND STILL THE SAME PROBLEM. NOW THIS IS THE SECOND TIME I PICKED MY CAR UP FROM THE CHEVROLET DEALERSHIP FOR THE SAME PROBLEM. THE FIRST TIME THEY TRIED TO TELL ME IT WAS THE BATTERY. THIS IS A VERY DANGEROUS ISSUE I'M HAVING AND IT SHOULDN'T BE TAKEN LIGHTLY. IT SEEMS THAT MANY PEOPLE ARE HAVING THE SAME PROBLEM AND INNOCENT PEOPLES LIVES ARE GETTING PUT IN DANGER FOR NO REASON..... PLEASE HELP.....THANK YOU *TR

TL* THE CONTACT OWNS A 2008 CHEVROLET IMPALA. THE CONTACT STATED THAT OIL WAS LEAKING UNDERNEATH THE VEHICLE. THE VEHICLE WAS TAKEN TO THE DEALER. THE TECHNICIAN DIAGNOSED THAT THE VALVE COVER GASKET WAS LEAKING OIL ONTO THE MANIFOLD. AS A RESULT, THE VALVE COVER GASKET NEEDED TO BE REPLACED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 90,000. UPDATED 04/08/16*LJ

I WAS DRIVING AND ALL OF A SUDDEN MY ENGINE LIGHT CAME ON AND A MESSAGE POPPED ON MY DASH BOARD THAT SAID ENGING POWER REDUCED. THIS IS ABOUT THE 10TH TIME OR MORE THAT THIS HAS HAPPENED TO ME. AFTER GOOGLE SEARCHING THE PROBLEM, THERE ARE HUNDREDS OF PEOPLE HAVING THIS SAME ISSUE WITH THEIR CHEVY IMPALA. THERE NEEDS TO BE A RECALL ON THIS!!! NO ONE SHOULD HAVE TO COME OUT OF THEIR POCKET. *JS

TL* THE CONTACT OWNS A 2008 CHEVROLET IMPALA. WHILE DRIVING 65 MPH, THE CHECK ENGINE WARNING LIGHT ILLUMINATED. THE CONTACT MENTIONED THAT THE THROTTLE SENSOR SHUT DOWN WARNING MESSAGE APPEARED. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHO DIAGNOSED THAT THE THROTTLE POSITION SENSOR NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED TWICE, BUT THE FAILURE PERSISTED. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE VIN WAS UNAVAILABLE. THE APPROXIMATE FAILURE MILEAGE WAS 65,000.