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

17,795

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 of 2 people found this helpful.
855

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.

55

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 34,068 nationwide Impala listings starting at $899.

ZIP:

Search Chevrolet Impala Questions

Chevrolet Impala Experts

#1 Js08016
Js08016
Reputation 1,790
#2 Danny Wang
Danny Wang
Reputation 1,650
#3 Tom Demyan
Tom Demyan
Reputation 1,620
View All

Related Models For Sale

Used Chevrolet Malibu
1,059 Great Deals out of 77,896 listings starting at $1,500
Used Dodge Charger
454 Great Deals out of 29,317 listings starting at $2,300
Used Honda Accord
941 Great Deals out of 77,703 listings starting at $899
Used Chrysler 300
401 Great Deals out of 19,197 listings starting at $850
Used Nissan Maxima
323 Great Deals out of 24,375 listings starting at $999
Used Nissan Altima
1,153 Great Deals out of 79,636 listings starting at $500
Used Buick LaCrosse
229 Great Deals out of 20,610 listings starting at $2,400
Used Dodge Challenger
212 Great Deals out of 23,426 listings starting at $7,990
Used Ford Mustang
543 Great Deals out of 45,840 listings starting at $1,999
Used Ford Fusion
1,179 Great Deals out of 79,428 listings starting at $998
Used Chevrolet Silverado 1500
1,769 Great Deals out of 181,161 listings starting at $250
Used Toyota Camry
1,098 Great Deals out of 90,895 listings starting at $1,599
Used Chevrolet Tahoe
556 Great Deals out of 31,361 listings starting at $1,500

Used Cars For Sale

2017 Chevrolet Impala For Sale
79 Great Deals out of 13,389 listings starting at $17,599
2016 Chevrolet Impala For Sale
36 Great Deals out of 2,492 listings starting at $13,999
2015 Chevrolet Impala For Sale
18 Great Deals out of 1,600 listings starting at $11,995
2014 Chevrolet Impala For Sale
75 Great Deals out of 2,518 listings starting at $9,195
2013 Chevrolet Impala For Sale
63 Great Deals out of 1,467 listings starting at $4,295

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.