Operation CHARM: Car repair manuals for everyone.

Tuning

^ Press lightly on the TUNE control in order to release the tune control from the tune control's recessed position.
^ Rotate the TUNE knob to the right in order to increase the frequency.
^ Rotate the TUNE knob to the left in order to decrease the frequency.
^ Push the TUNE control back while not in use.

UNO/ULO: For a description of the RPO Code(s) shown in this article, refer to the RPO Code List found at Vehicle/Application and ID RPO Codes