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How to reset check engine light on 2006 trailblazer?

To reset the check engine light on a 2006 Trailblazer, follow these steps:

1. Turn the ignition key to the "On" position, but do not start the engine.

2. Press and hold the "Trip" button on the instrument cluster.

3. While holding the "Trip" button, turn the ignition key to the "Off" position, then back to the "On" position.

4. Continue to hold the "Trip" button until the check engine light flashes three times.

5. Release the "Trip" button.

6. Start the engine.

7. The check engine light should now be reset.