After repair, you reset with a scan tool.
It requires a scanner to properly diagnosis a check engine light.
With a scan tool.
Bill Greene
The check engine light on a Chevrolet Colorado can be rest by connecting an OBD II code reader to the vehicle's computer . Each of the codes can then be reset which will turn the associated light off.
There are many sensors that can trip the check engine light to come on.
Several things could cause the 2001 Impalas check engine light to stay on. Since so many things could be wrong, check the computer codes for any leads on possible problems.
Have vehicle scanned to determine the problem
gage of temperature go to hot position but is not hot the engine check gages light come on
There are pages and pages and items that can cause a check engine light. You need to have it checked for codes with a scan tool. After repair light can be shut off with scan tool.
The computer has detected a problem with the emissions system.
Get the Engine Checked Don't waste your money getting your engine checked. Just disconnect your negative side of your battery for 10 seconds. Reconnect it and your done, no more check engine light.
Have vehicle scanned to determine the problem and have codes cleared