Denzo shows splash screen, then blue screen with clock

Denzo shows splash screen, then blue screen with clock

Denzo shows splash screen, then blue screen with clock

When turning on the vehicle, if your Denzo headunit give you the GMC splash screen, then gives you a blue screen with just the clock on it, no allowing you to navigate further, try the below steps in order. Moving to the next step, if the last didn't work:

  1. Hold down the volume knob for 5 seconds. (As the volume knob is also a radio power button.)
  2. Hold down the menu button for 8 seconds.
  3. Try a CANBUS reset:
    1. CAN-bus Reset:
  • Remove positive and negative cables from the vehicle battery.
  • Touch and hold the cables together for  5 - 10 seconds.
  • (if you have a diesel, disconnect both batteries, then do one battery at a time)
  • (If you have ESS on a newer vehicle ONLY disconnect the negative don't touch them together as you will also have a second battery)
  • Let the vehicle sit for 10 minutes.
  • Reconnect terminals.
  • With all doors closed, lock the vehicle and let it sit for 15 minutes.
  • Start vehicle with the door open.
  • Let vehicle run for 5 minutes.

If none of this works, please call Infotainment to have the radio physically looked into.

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