It requires a scanner to properly diagnosis a check engine light.
The 1995 Chevrolet Geo flashing amber engine light is an indication that the engine needs to be checked soon. A red flashing engine light is an indication the engine needs to be checked immediately.
With a scan tool.
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.
Have vehicle scanned to determine the problem
After repair, you reset with a scan tool.
gage of temperature go to hot position but is not hot the engine check gages light come on
The computer has detected a problem with the emissions system.
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.
There are pages and pages of things that can cause a check engine light. You need to have it checked with a scantool. Then the code can be diagnosed and repaired.