Intermittent groaning sound when accelerating

nahmer
25

Asked by nahmer Oct 26, 2007 at 02:48 PM about the 2007 Chevrolet Impala

Question type: Maintenance & Repair

This 2007 Chevrolet Impala with a 3.9L engine, makes an intermittent groaning sound when accelerating.  The dealer finally had the regional GM engineer ride with him.  He says that this occurs when the car shifts from 3 to 6 cylinders (a fuel saving measure) and nothing can be done about it.  Other than that, this is a wonderful car.  

1 Answer

littlehorn
29,535

Sounds like he is telling you the truth. It could just be the switchover from 3-6 cylinders. I would give it time and see if it becomes less noticeable.

Your Answer

Add photo

Related Questions

Search Chevrolet Impala Questions

Chevrolet Impala Experts

#1 Danny Wang
Danny Wang
Reputation 1,160
#2 Tom Demyan
Tom Demyan
Reputation 850
#3 littlehorn
littlehorn
Reputation 770
View All

Related Models For Sale

Used Kia Optima"
389 Great Deals out of 33,237 listings starting at $1,500
Used Chrysler Sebring"
110 Great Deals out of 4,198 listings starting at $1,295
Used Buick LaCrosse"
228 Great Deals out of 19,725 listings starting at $2,999