Method 1: Using the Trip Odometer Reset Button
Many GM Denalis use the trip odometer reset button to cycle through various information displays. This usually involves:
1. Locating the button: This button is typically located on the instrument cluster, near the steering wheel. It's often a small button or a stalk on the left side of the steering wheel. Look for a button marked with a small triangle or a similar symbol.
2. Pressing and holding: Turn the ignition to the "ON" position (don't start the engine). Press and hold the trip odometer reset button. Keep holding it.
3. Cycling through displays: The information displayed on your driver information center (DIC) should start cycling through various options like average fuel economy, distance to empty, average speed, etc. Keep holding the button until you reach the display you want to reset (e.g., average fuel economy).
4. Releasing the button: Release the button once the desired display is shown. It might reset automatically; otherwise, there might be a separate option to reset it within the DIC menu.
Method 2: Using the Infotainment System
Some newer Denali models allow resetting certain information via the infotainment screen:
1. Access the settings menu: Navigate through the menus on your infotainment screen (the touchscreen in the center console). Look for a "Settings," "Vehicle Information," or similar menu.
2. Find the relevant option: Look for options like "Reset Average Fuel Economy," "Reset Trip Odometer," or similar choices. The exact wording might vary.
3. Select and confirm: Select the option you want to reset and confirm your choice.
Method 3: If All Else Fails - Consult Your Owner's Manual
Your owner's manual is the definitive guide for your specific Denali model year and features. It will provide the precise steps for resetting the onboard computer functions. The manual will likely illustrate the buttons involved.
Important Note: Resetting the onboard computer typically only clears certain data like average fuel economy, trip odometer readings, and average speed. It won't reset engine fault codes or other diagnostic information stored by the vehicle. If you need to address diagnostic trouble codes, you'll need a code reader or a visit to a mechanic.
