2007 Chevrolet Impala Cruise Control Problems

Your Impala has repeatedly stalled and lost power while driving, including on a busy highway during rush hour, creating a dangerous situation. You've replaced the throttle body and throttle pedal twice and had the engine computer reprogrammed at a GM dealer, but the car now displays "reduced engine power" and "service throttle" warnings before shutting down completely. The engine is cutting off abruptly instead of gradually reducing power, forcing the driver to regain control in heavy traffic. A thorough diagnostic of the throttle control system and possible engine computer reprogramming may be needed to resolve this issue.

Your car's check engine light came on with error code P2138 related to the throttle pedal position sensor. After replacing the sensor, your car suddenly limited its speed to 5-10 mph, the traction control light turned on, and the information center displayed "engine safety reduced." When you reinstalled the original sensor, the car returned to normal speed, but the problem may happen again. The underlying issue likely requires a proper throttle pedal position sensor replacement or electrical inspection, and your car is currently failing state emissions inspections due to the fault code.

INTERMITTENT TRACTION LIGHT AND ABS LIGHT POOR ACCELERATION

TAKATA RECALL WHILE DRIVING I KEEP GETTING A 'ENGINE POWER REDUCED' MESSAGE AND MY CAR IMMEDIATELY SHUTS OFF IN THE MIDDLE OF TRAFFIC.

CAR RANDOMLY DISPLAYS REDUCED ENGINE POWER. ON INTERSTATE REDUCED DOWN TO 20MPH COULD HAVE GOTTEN MY FAMILY KILLED. RESEARCHED ONLINE ALOT OF IMAPALA HAVING SAME ISSUE. THIS IS VERY DANGEROUS

ENGINE POWER WAS REDUCED WHILE I WAS TRAVELING WITH THE FLOW OF TRAFFIC. I ATTEMPTED TO ACCELERATE BUT CAR STARTED SLOWING DOWN. TOOK THE VEHICLE FOR REPAIR AND REPLACED THE PEDAL POSITION SENSOR WAS REPLACED. I CONTACTED CHEVY DEALERSHIP SERVICE DEPT AND WAS TOLD IT'S A COMMON OCCURRENCE. IMPALAS HAVE A THROTTLE SENSOR INSTEAD OF CABLE. IF THE SENSOR GOES OUT, THE ENGINE POWER IS REDUCED TO PROTECT THE ENGINE INTEGRITY. IN SOME CASES, IT'S REDUCED SIGNIFICANTLY. THE MANUFACTURE NOTED MY CONCERN BUT THE REP WOULD NOT ESCALATE THE MATTER. I WENT ONLINE TO FILE A COMPLAINT AND THERE IS A CHEVY FORUM WITH SIMILAR CONCERNS. GENERAL MOTOR REPS REPLY WITH COMMON RESPONSES TO TAKE THE VEHICLE TO AN AUTHORIZED MECHANIC AND THEIR CONCERN HAS BEEN NOTED. I WAS INFORMED BY REPRESENTATIVE AT 800# FOR MANUFACTURE TO CALL BACK IF IT HAPPENS AGAIN. THANKFULLY I WASN'T GOING AT A HIGHER SPEED IN DALLAS TRAFFIC. NOT SURE IF I WOULD HAVE HAD THE LUXURY OF PULLING OVER.

SERVICE TRACTION CONTROL ENGINE POWER REDUCED DRIVING DOWN THE INTERSTATE AND IT DROPPED THE SPEED FROM 75 TO 40 IN MATTER OF MINUTES MY FAMILY ALMOST GOT RAN OVER BY A SEMI THIS IS A SERIOUS SAFETY ISSUE AND SOMEONE IS GOING TO GET SERIOUSLY HURT

MY ISSUE STARTED WITH MY CAR TURNING OVER. IT WOULD NOT WANT TO START FIRST TRY BUT WOULD TURN OVER ON THE SECOND. SOME TIMES IT WOULD START FINE AND OTHERS IT HESITATED. AFTER DEALING WITH THIS FOR A WHILE MY BATTERY DIED AFTER SPENDING A LITTLE WHILE IDLING. TOOK IT TO CHECK THE ACCELERATOR AND THE BATTERY BUT BOTH WERE FINE. CONTINUING TO INTERMITTENTLY ACT UP WHEN STARTING, IT ALSO STARTED TO SHOW OTHER PROBLEMS. I WAS GETTING IN MY CAR TO LEAVE AND IT STARTED UP FINE BUT BEFORE I COULD PULL OUT OF MY DRIVE WAY MY CAR STARTED SHAKING AND SHOWING AN "ENGINE POWER IS REDUCED" MESSAGE. I TURNED IT OFF RAN INSIDE AND WHEN I CAME BACK OUT TO SHOW OTHERS THE ISSUE IT STARTED WITHOUT A PROBLEM AND DID NOT HAVE THE MESSAGE ANY MORE. STILL HAVE THE TURNOVER HESITATION, I CONTINUE TO DRIVE IT HOWEVER IT STARTED TO SHAKE AND SHOW THE SAME ENGINE POWER REDUCED MESSAGE AS I PULLED INTO MY APARTMENT COMPLEX. ALSO HAS DONE THIS WHEN LEAVING AND TURNING INTO A MAIN ROAD, CAUSING US TO PULL OVER AND WAIT TO START IT AGAIN. TOOK IT TO GET CODES TESTED AGAIN AND IT PULLED UP A DIDN'T MATCH CODE. AFTER DOING RESEARCH TONS OF OTHERS HAD THE SAME PROBLEM AND WORSE. MANY SHOWED THE SOLUTION TO BE REPLACING THE THROTTLE BODY AND THROTTLE POSITION SENSOR WHICH WE DID. SLIGHT HESITATION ON THE START UP BUT TOOK IT AROUND THE BLOCK NO ISSUES. WENT TO TEST IT ON THE HIGHWAY AND BEFORE WE EVEN MADE IT THE ENGINE POWER REDUCED CAME ON AND CAR SHOOK AGAIN. THERE AND SO MANY OTHERS THAT HAVE HAD THIS PROBLEM AND MANY HAVE NOT FOUND THE FIX. EXTREMELY DISAPPOINTING SINCE WE CANNOT RETURN THE PART AFTER IT'S BEEN INSTALLED. I AM WORRIED TO TAKE MY CAR OUT AND DRIVE IT ON THE HIGHWAY BECAUSE I DO NOT WANT THIS TO HAPPEN WHILE I'M AT INCREASED SPEEDS.

TL* THE CONTACT OWNS A 2007 CHEVROLET IMPALA. WHEN THE ACCELERATOR PEDAL WAS DEPRESSED, THE VEHICLE SHIFTED AND JERKED. THE CONTACT TURNED THE TRACTION CONTROL BUTTON OFF, BUT THE VEHICLE FAILED TO MOVE. THE TRACTION CONTROL AND ENGINE INDICATORS ILLUMINATED OFF AND ON. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 160,000.

TRACTION CONTROL LIGHT CAME ON AND CAUSE MY CAR TO REDUCE POWER

TL* THE CONTACT OWNS A 2007 CHEVROLET IMPALA. THE CONTACT STATED THAT WHILE DRIVING AT 60 MPH, THE ACCELERATOR PEDAL WAS DEPRESSED BUT THE VEHICLE FAILED TO ACCELERATE AS THE REDUCED ENGINE POWER ERROR MESSAGE DISPLAYED. THE VEHICLE WAS TAKEN TO A DEALER WHERE IT WAS DIAGNOSED THAT THE ACCELERATOR PEDAL NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED. HOWEVER, THE FAILURE RECURRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 140,000.

TL* THE CONTACT OWNS A 2007 CHEVROLET IMPALA. WHILE TRAVELING AT 40 MPH, THE VEHICLE BEGAN TO ACCELERATE WITHOUT THE ACCELERATOR PEDAL BEING DEPRESSED. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS APPROXIMATELY 69,000.

WHILE DRIVING MY VEHICLE, THE TRACTION CONTROL LIGHT AND CHECK ENGINE LIGHT CAME ON...THEN A MESSAGE STATING "ENGINE POWER REDUCED" CAME ON. MY CAR DROPPED THE SPEED FROM 60 TO 20, ON THE HIGHWAY. IT HAPPENED AGAIN A MONTH LATER AND I WAS TOLD THAT MY ACCELERATOR PEDAL NEEDED TO BE REPLACED. THIS HAPPENED AGAIN IN MARCH OF THIS YEAR, AND I WAS TOLD MY FUEL PUMP HAD GONE OUT. NOW IT HAS HAPPENED AGAIN THIS MORNING, AND THE MECHANIC DOESN'T KNOW WHAT'S WRONG WITH IT BECAUSE IT HAPPENS INTERMITTENTLY SO HE CAN'T DIAGNOSE IT UNLESS IT DOES IT WHILE THE CAR IS IN HIS POSSESSION.

WHILE DRIVING, MY CAR GIVES A MESSAGE OF "REDUCED ENGINE POWER" AND COMPLETELY SHUTS OFF...REGARDLESS OF WHAT SPEED I AM DRIVING. THIS HAS HAPPENED 3 TIMES IN THE PAST 2 DAYS. VERY UNSAFE! I HAVE READ ONLINE OF HUNDREDS OF THIS SAME TYPE VEHICLE HAVING THIS PROBLEM. WHY ISN'T THIS A RECALL ISSUE? I BELIEVE ANOTHER CAR MANUFACTURER HAD A SIMILAR ISSUE WITH ONE OF THEIR ACCELERATOR PARTS AND THAT COMPANY RECALLED AND REPLACED THESE PARTS FOR NO CHARGE TO THE OWNER. I BELIEVE CHEVROLET NEEDS TO DO THE SAME THING.

WHILE DRIVING MY "SERVICE TRACTION CONTROL" MESSAGE CAME ON FOLLOWED BY "REDUCED ENGINE POWER". IT SLOWS DOWN MY VEHICLE AND SOMETIMES I CANNOT EVEN ACCELERATE WHEN THESE MESSAGES APPEAR. THEY ALWAYS COME ON TOGETHER AND EVERY SINGLE TIME I DRIVE. SOMETIMES RIGHT AWAY, SOMETIMES AFTER I'VE BEEN DRIVING FOR AWHILE. IT USE TO NOT HAPPEN WHEN I WAS USING MY CRUISE CONTROL BUT NOT EVEN WHEN THAT IS ON IT HAPPENS.

AT ABOUT 10 MPH UPON ACCELERATING THERE IS A GROWLING NOISE AND THE ABS/TRACTION CONTROL LIGHT COMES ON. THIS LASTS FOR ONLY A FEW SECONDS, BUT THE CAR FEELS LIKE IT MAY NOT KEEP GOING. *TR

WHILE DRIVING THE TRACTION CONTROL LIGHT COMES ON AS WELL AT REDUCED ENGINE POWER. IT DROPS THE SPEED OF THE CAR DOWN TO 40 MPH OR LOWER. IT DOES NOT ACCELERATE EASILY WHEN COMING TO A COMPLETE STOP. THIS CAN CAUSE AN ACCIDENT AS I HAVE HAD SEVERAL NEAR MISSES. THE LIGHT WILL GO OFF IF YOU TURN THE VEHICLE OFF FOR A FEW HOURS BUT DOES END UP COMING BACK ON. *TR

MY IN-LAWS WERE DRIVING THEIR CAR WHEN SUDDENLY THE ACCELERATOR PEDAL WAS UNRESPONSIVE. LUCKILY, THEY WERE NOT INJURED BUT WERE ABLE TO COAST TO A STOP. THEY WERE TOWED TO A SERVICE CENTER WHERE THE ACCELERATOR PEDAL POSITION SENSOR WAS REPLACED. TOTAL COST WAS $317.41.PART NUMBER 25830023 I RETRIEVED THIS PART AND OPENED IT UP. I WAS STARTLED TO FIND THAT PARTS OF THE CIRCUIT BOARD WERE NEVER SOLDERED. I AM A LICENSED MASTER ELECTRICIAN, HAVE AN AAS DEGREE IN ELECTRONICS TECHNOLOGY AND AS A HOBBY HAVE BEEN DOING AUTOMOTIVE REPAIR FOR 45 YEARS. THIS PART SHOULD NEVER HAVE LEFT THE FACTORY. I CONTACTED GM AND THEY SIMPLY SAID THE PART IS NOT ON OUR RECALL LIST SO WE WILL NOT REIMBURSE YOU OR LOOK INTO THIS ANY FURTHER. I HAVE THE PART. I'M GUESSING THERE COULD BE MANY MORE JUST LIKE THIS. MY IN-LAWS ARE 80 AND I'M PURSUING THIS FOR THEM. THEY HAVE SOLD THIS CAR. THANKS. *TR

TL* THE CONTACT OWNS A 2007 CHEVROLET IMPALA. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 62 MPH, THE TIRE MONITORING WARNING LIGHT ILLUMINATED AND THE ENGINE BEGAN REVVING WHILE THE CRUISE CONTROL WAS ACTIVATED. THE BRAKE PEDAL WAS DEPRESSED BUT THE VEHICLE ACCELERATED CAUSING THE CONTACT TO CRASH INTO THE MILE MARKER SIGNS AND A DITCH. A POLICE REPORT WAS FILED. THE CONTACT SUSTAINED A BROKEN RIB ON THE RIGHT AND NECK BURN FROM THE SEAT, FRONT SEAT PASSENGER SUSTAINED A FRACTURED VERTEBRAE IN THE LOWER BACK. THE REAR DRIVER'S SIDE PASSENGER SUSTAINED THREE BROKEN RIBS AND A BRUISE ON THE CHEST AREA. ALL REQUIRED MEDICAL ATTENTION. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE VIN WAS UNAVAILABLE. THE APPROXIMATE FAILURE MILEAGE WAS 130,000.

TL* THE CONTACT OWNS A 2007 CHEVROLET IMPALA. WHILE DRIVING APPROXIMATELY 30 MPH AND ATTEMPTING TO AVOID A CRASH, THE VEHICLE ACCELERATED FORWARD WHEN THE BRAKES WERE ENGAGED. AS A RESULT, THE CONTACT'S VEHICLE STRUCK ANOTHER VEHICLE. A POLICE REPORT WAS NOT FILED AND THERE WERE NO INJURIES. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 60,000.

TL* THE CONTACT OWNS A 2007 CHEVROLET IMPALA. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 55 MPH, THE ENGINE STALLED AND THE ELECTRONIC THROTTLE CONTROL WARNING LIGHT ILLUMINATED. THE CONTACT WAS ABLE TO RESTART THE VEHICLE ON THE FIRST ATTEMPT. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE AND CURRENT MILEAGE WAS 60,400.

THE VEHICLE HAS A REDUCE ENGINE DISPLAY AND THE ACCELERATION STARTS TO SLOW DOWN THE CAR TO AROUND 40MPH. SOMETIMES THE CAR WILL SHUT OFF. *TR

MY WIFE'S DAILY DRIVER IS A 2007 IMPALA . SHE WAS DRIVING HOME WITH OUR THREE KIDS WHEN THE CAR STARTED SHAKING AND THE REDUCED ENGINE POWER DISPLAY CAME ON. AFTER THAT SHE COULD ONLY GO ABOUT 25MPH. THIS SCARED HER AND COULD HAVE CAUSED AN ACCIDENT. I LOOKED ONLINE AND FOUND FORUMS ABOUT A LOT OF PEOPLE HAVING THE SAME PROBLEM AND IT PISSES ME OFF THAT GM HASN'T RECALLED THESE VEHICLES . DOES SOMEONE HAVE TO DIE BEFORE THIS SITUATION IS TAKEN CARE OF? *TR

TL* THE CONTACT OWNS A 2007 CHEVROLET IMPALA. THE CONTACT STATED THAT ATTEMPTING A RIGHT TURN, THE VEHICLE SUDDENLY ACCELERATED AND SHE WAS UNABLE TO ENGAGE THE BRAKES. THE CONTACT MENTIONED THAT THE VEHICLE CRASHED INTO A BRICK WALL. A POLICE REPORT WAS FILED AND THE DRIVER WAS BADLY BRUISED. THE VEHICLE WAS TOWED TO THE DEALER WHO WAS NOT ABLE TO DIAGNOSE THE FAILURE. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE AND THE VEHICLE WAS NOT REPAIRED. THE FAILURE AND CURRENT MILEAGE WAS 21,000. UPDATED 11/29/11 *BF UPDATED 12/02/11

2007 CHEVROLET IMPALA. CONSUMER STATES VEHICLE JERKED WHILE DRIVING, THE AIR CONDITIONER WAS CLUCKING, THE ENGINE LIGHT CAME ON AND THE SPEEDOMETER STOPPED WORKING *TGW THE DEALER ADVISED THE CONSUMER THE AIR INLET ACTUATOR AND SPEED SENSOR NEEDED TO BE REPLACED. *JB

(1) MY WIFE PULLED INTO A PARKING SPACE AT OUR CHURCH AND APPLIED THE BRAKES TO STOP. (2) THE CAR CONTINUED ON ROLLING OVER A CONCRETE BARRIER AND KNOCKING DOWN AN ORNAMENTAL IRON FENCE SURROUNDING THE PARKING LOT AND CONTINUING OUT INTO THE STREET WHERE IT FINALLY STOPPED. IN ADDITION TO THE DAMAGE TO THE FENCE, THERE WAS CONSIDERABLE DAMAGE TO THE FRONT OF THE CAR. (3) CAUSE OF FAILURE HAS NOT BEEN IDENTIFIED. ON ONE OR TWO PREVIOUS OCCASIONS, WHEN PULLING THE CAR INTO OUR GARAGE I HAVE HAD THE CAR STALL AND THEN SURGE FORWARD. CAR IS BEING TAKEN TO A BODY SHOP TO REPAIR THE DAMAGE. *TR

TL*THE CONTACT OWNS A 2007 CHEVROLET IMPALA. WHILE DRIVING 65 MPH DOWNHILL WITH THE CRUISE CONTROL ACTIVATED, THE VEHICLE AUTOMATICALLY ACCELERATED TO 85 MPH. THE DEALER WAS UNABLE TO DIAGNOSE THE CAUSE OF FAILURE. THE MANUFACTURER ADVISED THE CONTACT TO READ THE OWNER'S MANUAL. THE CURRENT MILEAGE IS 5,300 AND FAILURE MILEAGE WAS 4,700. UPDATED 08/07/07. *JB