Most parts stores have code readers only they are not qualified to erase codes , like the earlier post you need to find out the code before you clear it so don't screw up something disconnecting the battery because the code will still be there until its manually cleared , may be something as simple as loose gas cap if the car runs good its usually something that has fluked a code , good luck !
Let's start with the service ligth first this mean you need to service your car do the oil change on it first as for the check engine light that could be caused by the service ligth I do agree with the other post go to autozone or Orielly auto parts they will scan it for you and tell you the codes they will not clear them because it's the rule the Corp office has you may talk to the person and they may clear it for you the nicer you are to them the more likely they will reset it for you
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There are 2 ways that I know of to turn off the check engine light.
1. Disconnect the cable from the negative (-) terminal of the battery for 10 to fifteen minutes, then reconnect.
2. By using a device that reads the diagnostic codes of the car's on board computer.
There are places that offer to do this for you at variable cost. Disconnecting the battery is the easiest and cheapest route, but in the long run its best to have your car checked by a qualified technician.
It may not be a big problem .
Take it to your local auto parts store . They most times will read the codes for free witch you need to know what this code is .
But with chevys sometimes hitting a pot hole or going down bumpy road is enough to make the MIL light come on .
But you need to check it out people who drive there cars with things wrong with them end up paying a lot more then people who fix problems before they get out of control
SOURCE: Have a 2003 Chevy Impala. Check engine light
Bank 1 is the rear O2 sensor, but experience says to change both. The front one is right behind the engine in the middle of the engine compartment. The rear O2 sensor is on the top of the exhaust pipe, just behind the catalytic converter. But the same code that shows it is the O2 sensor (which is P0420), is the same code for the catalytic converter, or a vacuum leak. Make sure if you do change the catalytic converter, ensure that the new one is OBD-2 compliant. And the vacuum leak could possibly come from the manifold gasket. Let me know what the problem was!
SOURCE: check engine light on
You cannot reset the check engine light any other way than using a scan tool. Some auto parts stores will scan the vehicle for free then at least you will know the area of the fault.
SOURCE: 06 chevy impala v6 3.9 liter engine. Check engine
there is a large evaporative leak. keep away form ottozoo, they dont have the brain power to actually diagnose a light bulb., their job is to sell parts., if they sell you the wrong parts tough.Take it to a qualified repair shop that does a lot of GM work or the dealer.
SOURCE: How can I reset check engine light on 2003 Chevy
Hi. the recommended action is to use a diagnostic CPU. Once attached to the in-car port under the dash, you can use this CPU to clear, and reset the DTC. There is another way, as well. You can , simply, pull the negative battery cable for 5 to 10 minutes. This will force the DTC to be cleared, thus, causing the light to shut down for a short time.
http://technoanswers.blogspot.in/2012/02/car-starting-issues.html
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Thanks.
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