Setting the Tone (UPO)
Perform the following functions in order to set the tone:^ Bass-Press the knob slightly so it extends. Turn the knob to increase or decrease the bass. When you use this control, the radio's tone setting will switch to manual.
^ Treb-Press the knob slightly so it extends. Turn the knob to increase or decrease the treble. When you use this control, the radio's tone setting will switch to manual. If a station is weak or noisy, decease the treble.
Push the knob back into its stored position after adjusting the tone.
For a description of RPO Code(s) shown in this article, refer to the RPO Code List found at Vehicle/Application and ID. RPO Codes