2002 GMC Sonoma Owner's Manual - Page 175

CD Adapter Kits It is possible to use a portable CD player adapter kit with your cassette tape player after activating the bypass feature on your tape player. To activate the bypass feature, use the following steps: 1. Turn the ignition to RUN or ACCESSORY. 2. Turn the radio off. 3. Press and hold the TAPE AUX button for five seconds. The tape symbol on the display will flash for two seconds, indicating the feature is active. 4. Insert the adapter into the cassette slot. It will power up the radio and begin playing. This override routine will remain active until the EJECT button is pressed. AM-FM Stereo with Compact Disc Player and Automatic Tone Control (If Equipped) Playing the Radio PWR (Power): Press this knob to turn the system on and off. VOL (Volume): Turn this knob clockwise to increase volume. Turn it counterclockwise to decrease volume. The knob is capable of rotating continuously. 3-21