Shifting from Two-Wheel Drive High to Four-Wheel Drive High

GMC Sierra / GMC Sierra Owners Manuals / Driving and Operating / Drive Systems / Four-Wheel Drive / Shifting from Two-Wheel Drive High to Four-Wheel Drive High

• Shifts between Two-Wheel Drive High and Four-Wheel Drive High can be made at any vehicle speed.

• Shift the transfer case lever in one continuous motion into either the Four-Wheel Drive High or Two-Wheel Drive High position.

• Shifting from Two-Wheel Drive High to Four-Wheel Drive High while the vehicle is in motion may require that moderate force be applied to the shift lever for a few seconds before Four-Wheel Drive High can be engaged, especially in cold weather.

• In extremely cold weather, it may be necessary to slow or stop the vehicle to shift into Four-Wheel Drive High.

• While in Four-Wheel Drive High, the vehicle can be driven at any posted legal speed limit.

    See also:

    When the Light Is On Steady
    This indicates that one or more of the tires are significantly underinflated. A Driver Information Center (DIC) tire pressure message may also display. See Vehicle Messages on page 5‑42 for mor ...

    When to Check and Change Lubricant
    It is not necessary to regularly check front axle fluid unless a leak is suspected, or an unusual noise is heard. A fluid loss could indicate a problem. Have it inspected and repaired. ...

    Root Directory
    The root directory of the disc is treated as a folder. If the root directory has compressed audio files, the directory displays on the radio as the CD label. If a disc contains both uncompressed CD a ...