Chevrolet Impala owners have reported 15 problems related to gas recirculation valve (egr valve) (under the engine and engine cooling category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of Chevrolet Impala based on all problems reported for the Impala.
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.
See all problems of the 2007 Chevrolet Impala.
I let me 2008 chevy Impala warm up as the windchill is around -35 degrees below zero. I started out of the parking lot, when all of a sudden my message display said "reducing engine speed", then it said "service disabled, disabled service throttle". Then the veh came to a complete stop and left me stranded in the middle of a parking lot! there are no towers available at all till tomorrow morning either. Tried jumping starting the vehicle - but to no avail. Called a chevy dealer and they had no idea what was happening with it.
See all problems of the 2008 Chevrolet Impala.
Upon entering my vehicle and waiting for the engine to warm up as it was around -05 degrees f there were no issues to be had. About 15 seconds after leaving my parking spot at my place of employment and 70 feet later my engine started feeling weird, heard a chime and saw my dashboard with the wording "engine power reduced. " not knowing what it was and knowing I had no other choice continued driving home. 4 days pass no issue then yesterday when it was 27 degrees f outside again had the car warm up and about same time frame and same distance later the same series of events occured but this time the rpm was bouncing between 700 and 1100 when I was moving in idle. Pulled over and opened the hood to inspect (car was shaking a lot at this point) and the engine is shaking as much as it could while still in its restraints, upon reving the vehicle the engine leveled out but with the foot off the gas again the shaking started again. Until further notice a vehicle that I need for my commute to and from work is parked. I do not feel safe driving not knowing what can happen.
See all problems of the 2006 Chevrolet Impala.
About weeks before the incident, my car seem to misfire. The car was parked for 3 days. When tried to start it, the engine exploded and caught fire. The intake manifold and motor oil cover and some other engine parts exploded out of car. When contacted gm and mentioned the incident, no action was taken by gm and the refuse to take any action or acknowledge any responsibility. It appears that same engine has issues which caused a recall on April 14, 2009. The symptoms/cause are described as:
"gm recalled 1. 5 million vehicles with this engine on April 14, 2009 due to risk of fire from engine oil leaking under the valve cover gaskets onto hot exhaust manifolds. The fire could spread to the nearby plastic spark plug wire retainers on the valve cover and then to the rest of the engine compartment. Gm fitted the affected vehicles with redesigned spark plug wire retainers.  these engines were noted for having problems with the plastic upper intake manifold cracking around the egr passage. The engine would then vapor lock. "
I did take my car to dealership to take care of this recall but it appears that it does not fix the problem and it still exists and my car is totaled. But gm has told me that according to texas law it is not responsible for any issues after 4 years from the purchase date.
See all problems of the 2000 Chevrolet Impala.
Tl-the contact owns a 2002 Chevrolet Impala. The contact stated that when trying to accelerate the vehicle it would hesistate and take it's time. The vehicle was taken and inspected by a dealer. They advised her that the egr valve was causing the engine to misfire and needed to be re0placed. The vehicle has not been repaired. The manufacturer has not been contacted. The failure mileage was approximately 110,000. Tb.
See all problems of the 2002 Chevrolet Impala.
Problem started with the trans - wasn't shifting right, hard shift. Took it to rotolo chevy in fontana, CA. Catalytic converter, nearly $800 to get new one only to have the car completely die on the side of the road when the tranny disintegrated. Replaced under warranty. Ever since I have had shifting difficulties - took it back a week later to be told it has a "Smart adapt" in trans and needed approx 1000 miles to sync itself, now the car sputters, has a misfire code in cylinder 2, trans code. Hard starts, randomly stalls when making right turns, interior and exterior lights surge when at an idle, car constantly feels like it wants to stall - it can actually make you nauseas when sitting at a stop light because of the surging of the car. This morning the car just stalled when I was at a stop sign. All plugs, plug wires and coil pack for cylinder 2 have been replaced with no correction to how the car runs. Sounds and feels worse when you put the car into reverse, but smooths out some when in drive. Filed complaint with bar regarding cat replacement, recommended refund to dealer for unnecessary item - dealer refuses to give money back. Told me car would never run right after the tranny was replaced because I refused to have them change the motor mounts. The car has not run right since, but a second opinion found that the mounts were ok - recommended that one of the back mounts be replaced as it was more worn than the others.
See all problems of the 2003 Chevrolet Impala.
While driving at various speeds, the engine would stall and shut off. The problem started at 90,000 miles. Have brought the car to the chevy dealer and they have not been able to diagnose the problem. The car is not generating any error codes. I almost got into an accident twice due to shutting off during acceleration. I have noticed that the stalling or shutting off starts after the temperature reaches approximately 125 degrees f and happens randomly. When I am operating the air conditioner, the stalling is more noticeable due to the engine load. So far, the dealer has replaced the crank sensor and ignition module which has not corrected the stalling and shutting down.
The contact owns a 2004 Chevrolet Impala. The contact attempted to start the vehicle when the security warning indicator light illuminated on the instrument panel. The engine would not operate while the security warning indicator was illuminated; however, the engine started after approximately ten minutes. The contact stated that the failure appeared to be more pronounced when the temperature was 50 degrees. The identical failure occurred twenty times. The vehicle was taken a dealer where the technician stated that the failure was contributed to the vcm unit and connectors, which had been replaced. The failure continued to occur. The failure mileage was 97,000. The current mileage was 105,000.
See all problems of the 2004 Chevrolet Impala.
My wife and I purchased the chevy Impala to be our first vehicle together after getting married. Bought this vehicle brand new only 102 miles on it before we drove it off the lot. Little did we know it was going to be 4 years of nightmares and headaches. At the time read many review about the Impala, nothing too major was found. After the first week, the power steering seemed to be failing, especially during rain. Took it back to the dealer and they could not replicate the incident. They told us they could not find anything wrong and to bring it back if the problem continued. It didnt take long and we were back at the dealer with the same problem. Dealer said they checked the belts and the fluid all working properly. After a few other times of the power steering failing took the vehicle to another dealer and they too could not find anything wrong with the ps. So, after several trips back to dealer we decided to just deal with it. Which brings me to my next complaint about the 2008 Impala, at just over 10,000 noted abnormal wear on tires, and wires peeking through on the inside. Took it in to dealer and they accused us of abusive driving behavior and neglect, which was a new on to me. Anyway, they refused to replace the tires siting the warranty only covers defects and normal driving conditions. So, by this time we are starting to regret the purchase of this vehicle. We had to replace all 4 tires @ 98. 00 each. About year later at 28,000 miles began to have this problem once again. After many hours of debates and phone calls they agree to "check out our problem" with no cost to us. Low and behold wouldn't you know it, they found nothing wrong with the vehicle and advised us to purchase better brand tires. The last time I looked michilan was a top brand tire. On top of everything else, main seal in motor began to leak. This was the last straw!.
This car has been a electrical/mechanical nightmare and I'm finding many, many, reports on the internet of owners having the same problem(s). 1) intake manifold gasket leaks causing catalytic converter and egr valve to clog. The result of this is exhaust gases can't escape , backing up and burning/blowing a hole in the intake manifold itself. All above items had to be replaced at a very substantial cost. 2) blinkers intermittently work. Mostly they don't work. This is caused by a defective (flasher) module located in the dash behind the 'flasher" button. This IA very,very common. 3) a/c heater blower fan stops working on speeds 1,2 then 3 resulting. This is due to resistors burning up on a module mounted behind the dash and in front of the blower motor. My question here is, at what point does someone hold the manufacturer responsible for these obvious factory defects. All you have to do is google any of the above complaints and see how many people are affected. Help !!!.
See all problems of the 2001 Chevrolet Impala.
My 2000 chevy Impala hesitates when it starts, it seems to get worst when it is about 90 degrees outside. Dealer replaced a couple of parts, but now the said they can't do anything else about it. I said that the should replace the engine for a new one. I am just a consumer.
Loud "thumping" noise coming from lower engine area. Echanic diagnosed problem. Fly wheel disinegrated. Poorly manufactured part. One month later "low coolant" engine light came on. Mechanic diagnosed problem as bad intake valve seal. Poor quality gm part. Both parts replaced and repaired as recommended.
Check engine light keeps indicating egr valve problem. Has been replaced 4 times. Worse in the cold weather than in summer. Also, check coolant light came on long trips, then went off. Had to spend $800 to replace cover.
Engine surges when coming off of idle. Dealer has stated it is a know problem and that GMC is working on a fix for the egr valve.
See all problems of the 1996 Chevrolet Impala.
Engine check light comes on intermittently. Dealer reports egr valve is bad, but can not get part for several weeks. When driving vehicle over bumps, turning corners or stopping, occupants can hear fuel in fuel tank "sloshing/splashing" from inside passenger compartment .
|Problem Category||Number of Problems|
|Engine And Engine Cooling problems||
|Engine Cooling System problems||
|Manifold/header/muffler/tail Pipe problems||
|Car Stall problems||
|Check Engine Light On problems||
|Engine Shut Off Without Warning problems||
|Engine Stall problems||
|Engine Oil Leaking problems||
|Gasoline Engine problems||