To replace one of these bulbs:
1. Remove the two screws holding each of the license plate lamps.
2. Turn and pull the license plate lamp toward you through the opening.
3. Turn the bulb socket counterclockwise and pull the bulb straight out of the socket.
4. Install the new bulb.
5. Push the bulb straight into the socket and turn clockwise to reinstall.
6. Push and turn the license plate lamp away from you through the opening.
7. Reinstall the two screws holding the license plate lamp.
Chevrolet Cobalt Service & Repair Manual. Idle Speed & Mixture Adjustments
Idle speed is controlled by the
ECM/PCM. No adjustment is required.
Curb Idle Speed
Curb idle speed is controlled
by the ECM/PCM. No adjustment is required.
Fast Idle Speed
Fast idle speed is controlled
by the ECM/PCM. No adjustment is required.
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