The "Change Oil" message displayed on your Chevrolet Silverado's gauge cluster is part of the Oil Life Monitoring System, standard on many GM (General Motors) vehicles. The message appears when it's time for an oil-change; the interval is based on your driving habits (for example, it may appear more frequently if you engage in a lot of stop-and-go traffic). Once you change your Chevy's oil, the message will not disappear; the system must be reset. The process is a bit different between Chevy Silverado models.
Insert your key and turn the ignition to position "C" (Run/On) without starting the engine.
Press the second button from the top on your information center (next to the steering column, car symbol) until "Oil Life" displays on your odometer cluster.
Press and hold the "Reset" button on your information center (check mark symbol) until the "Oil Life" display changes to 100 percent.
Turn your ignition to position "A" (Lock/Off).
Insert your key into the ignition, and turn it to position "A" (Run/On) without cranking the engine.
Depress the gas pedal three times within five seconds. The "Change Oil" message will begin to flash.
Turn the ignition to position "A" (Lock/Off) once the light stops flashing (about 10 seconds).
