Q: My 2010 Chevy Impala reads reduced engine power and won't start now it cut off on me once on the highway I had to coast to get off

asked by on July 08, 2017

My car read's reduced engine power and now it won't start what do you think needs to be replaced on it ?

My car has 135000 miles.
My car has an automatic transmission.

Hi There, The check engine light indicates that there is likely something wrong with the engine or transmission in your vehicle and will ususally come on in conjunction with the vehicle going into the reduced power mode. This happens when the vehicle computer detects something wrong with the engine or transmission that may potentially cause further damage or present a safety issue. It is important to have this diagnosed as soon as possible as it could range from something minor to something more serious. Unfortunately, there are many different reasons for this light to come on and the best way to diagnose is to have the vehicle hooked up to a scanner which will download the engine fault codes indicating more specifically what may be wrong. I would recommend having an expert from YourMechanic come to your location to diagnose and inspect your vehicle.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing


Experienced Mechanic?

Earn up to $70/hr

What others are asking

How do I use the air conditioning?
The air conditioning system brings cold air into your vehicle, to help keep you cool on hot days. To turn on the air conditioning, press the A/C button in the middle of the Fan Speed Control knob. A light will...
Warped brake rotor--what causes that and how to repair
You need to change both. My advice is not to have them turned because if you have rotors made out of steel and they warp, and you turn them the other way to make them flat then they are thinner....
Front coil spring housing corroded and broke away
Hey there, thanks for writing in about your 1997 Mercedes-Benz E300. This is also related to your other question regarding the coil springs. As explained, the perch is a structure that supports the coil springs. Often times, when one or...
Rough idle, missing, almost dies when in gear, shaking violently when driving in low speeds
Hi, thanks for writing in. I'd be happy to provide my insight. I recommend you have the engine checked for vacuum leaks, or and check if carbon is clogging the EGR valve (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-exhaust-gas-recirculation-egr-valve). If you still cannot find the reason...
Car won't start but lights turn on Chrysler 200
First thing to check would be the battery. While it can have enough power to turn accessories like the lights on, it may not have enough cranking amps to start the engine or allow the security system to trigger start...
Not sure what part my car needs. It it shakes when I'm getting off the high way. And it feels like it's dancing in the front.
Hello, thank you for writing in. When dealing with a shake or wobble, its always best to start with the simplest options and work your way up in complexity. Make sure your tires are properly inflated, and have the tires...
We have a 1992 Chrysler lebarron convertible. When it rains the driver side floor holds water as well as the back floor on driver
There are several pathways that will admit rainwater and leave it where you have described. The leak can be pinpointed if you request a vehicle water leak diagnostic (https://www.yourmechanic.com/services/clear-fluid-is-leaking-inspection). If you request that service, the responding certified mechanic will get...
I was driving my car and i noticed it start making weird noises and then the engine quit working
It's hard to say from this chair, there is a wide range of possibilities. But you might just be having charging system problems. If the charging system failed a few days before, you can drive for a few hours before...
2006 jetta 2.5 revs on its own in neutral or when clutch is in.
This problem of erratic and/or high speed is often referred to as "surging" or "hunting". The causes include vacuum leaks and EGR system faults, a faulty idle air control (IAC) valve or circuit, faults in the fuel pump control circuit,...

Related articles

A Buyer’s Guide to the 2012 Chevrolet Impala
A A true classic, the 2012 Chevrolet Impala may not have all of the latest high-tech features of other sedans on the market, but it is a tried-and-true model with lots of room, plenty of comfortable features, and a large...
2012 Chevrolet Equinox vs. 2012 GMC Terrain: Which One Should I Buy?
The mid-size crossover SUV category offers the comfort and size of an SUV, but on the platform of a car, giving it the look and feel of a large hatchback. The unibody construction typical of passenger vehicles is used instead...
The Best Used Cars to Buy If You Have 3 or More Kids
If If you have three or more kids, you could probably get by with a mid-size sedan if all you want to do is take them from Point A to Point B. Realistically, though, having kids means music lessons, athletics,...