Oldsmobile released the Alero for the 1999 model year. The Alero gave Oldsmobile a new presence in the sporty, family car market, which it lacked at the time. The Alero only lasted six model years, as General Motors cut the entire Oldsmobile lineup in 2004. the 2004 Alero came standard with a 2.2-liter four-cylinder that produced 140 horsepower. It also had a 170-horsepower, 3.4-liter V-6 engine as an available option. The 2004 Alero was fitted with GM’s “Oil Life System,” which illuminated a “Change Oil” light at precise oil change intervals. Resetting this “Change Oil” light is a simple process that only takes a few minutes.
Insert the ignition key into the Alero’s ignition and turn it to the “On” position, but do not start the vehicle.
Press and release the accelerator pedal three times within five seconds.