I have a 07 Impala (3.5 liter) with an engine knock at 1000 to 1500 rpm. It has been in the Dealer shop 3 times with no resolution. I have been advised to drive intil the noise gets worse! Any other notations or complaints. The car has 2200 miles? Dealer thinks it might be coming from the exhaust manifold??

Asked by Nov 22, 2006 at 05:24 PM about the 2007 Chevrolet Impala

Question type: Maintenance & Repair

I have a 07 Impala (3.5) with an engine knock at 1000 to 1500 rpm. It has been in the Dealer shop 3 times with no resolution. I have been advised to drive until the noise gets louder. (which it is!)  The car has 2200 hundred miles and I have bought it new 6 weeks ago. (With no noise when purchased.) GM tech support has not given the Dealer a solution. A file has been started on this car.  The dealer seems to think the knock is coming from the exhaust manifold? GM tech service Told the dealer to purge the cooling system, which they did with no solution?

Don Mach
Lincoln Nebraska

5 Answers

16,605

Hello, This car is too new to be having these kinds of problems. I would check into Lemon Laws in Nebraska and hope that you find some help. This site may provide additional information: http://www.mycarstats.com/safetystation.asp?mmmakes=CHEVROLET&mmmodels=IMPALA&year=2007%20&ComponentTab=RECALLS I'm very sorry to hear about your car! That just stinks! CarGrrl

1 out of 2 people think this is helpful.
815

If it is a deep sounding knock I would be inclined to think main bearings. If you drive it till it gets worse the engine will be trash and I think the dealer knows this. The exhaust manifold has nothing in to knock but may be a route for the sound to come through. An actual knock is made by parts hitting each other that shouldn't. I would take it to another mechanic who doesn't have anything to lose (like the dealer) by telling you what is actually going on. I think they owe you another car or at least a new engine.

35

I concur with CarGrrl and Corollanut. Another possability could be timing sensors are miscalabrated causing engine detonation or pre-ignition, but that is usually heard when starting off from a dead stop, or speeding up. I would start my own file and get copies of any work/visit that has been done.

45

dud chang da enge of ue car

If the later impalas were anything like the '02s I ran into when I worked in a dealership service department, it could be a loose accessory bolt. GM was notorious for underfilling the coolant (causing heater core failure) and leaving alternator bolts loose.. from the factory.

Your Answer

Add photo

Related Questions

Impala

Looking for a Used Impala in your area?

CarGurus has 36,809 nationwide Impala listings starting at $1,800.

ZIP:

Search Chevrolet Impala Questions

Chevrolet Impala Experts

#1 Danny Wang
Danny Wang
Reputation 1,590
#2 Js08016
Js08016
Reputation 1,490
#3 FordNut
FordNut
Reputation 1,380
View All

Related Models For Sale

Used Chevrolet Malibu
1,157 Great Deals out of 80,725 listings starting at $2,495
Used Dodge Charger
545 Great Deals out of 29,488 listings starting at $2,343
Used Honda Accord
1,263 Great Deals out of 78,832 listings starting at $969
Used Chrysler 300
527 Great Deals out of 21,439 listings starting at $1,500
Used Nissan Maxima
513 Great Deals out of 25,501 listings starting at $1,500
Used Buick LaCrosse
442 Great Deals out of 21,214 listings starting at $1,495
Used Nissan Altima
1,346 Great Deals out of 86,044 listings starting at $695
Used Toyota Camry
1,523 Great Deals out of 101,602 listings starting at $700
Used Dodge Challenger
428 Great Deals out of 25,748 listings starting at $7,980
Used Chevrolet Tahoe
1,084 Great Deals out of 32,099 listings starting at $1,495
Used Chevrolet Silverado 1500
2,761 Great Deals out of 150,214 listings starting at $1,259
Used Ford Taurus
364 Great Deals out of 22,720 listings starting at $1,499
Used Ford Fusion
1,281 Great Deals out of 74,014 listings starting at $1,295
Used Ford Mustang
718 Great Deals out of 39,137 listings starting at $1,000

Used Cars For Sale

2017 Chevrolet Impala For Sale
6 Great Deals out of 8,274 listings starting at $18,438
2016 Chevrolet Impala For Sale
292 Great Deals out of 6,313 listings starting at $14,999
2015 Chevrolet Impala For Sale
84 Great Deals out of 2,682 listings starting at $12,995
2014 Chevrolet Impala For Sale
151 Great Deals out of 2,939 listings starting at $10,500
2013 Chevrolet Impala For Sale
82 Great Deals out of 1,673 listings starting at $4,995