How do you install MAF on 2006 HHR?

To install a Mass Air Flow (MAF) sensor on a 2006 Chevrolet HHR, first, ensure the engine is off and the key is removed. Disconnect the negative battery terminal, then locate the MAF sensor on the intake duct. Remove the screws or clips securing the MAF, disconnect the electrical connector, and replace it with the new sensor. Reassemble everything in reverse order, reconnect the battery, and start the engine to check for proper operation.