How to Check Lubricant

To get an accurate reading, the vehicle should be on a level surface.

1500 Series
1500 Series

A. Fill Plug
B. Drain Plug

All Except 1500 Series
All Except 1500 Series

A. Fill Plug
B. Drain Plug

• When the differential is cold, add enough lubricant to raise the level from 0mm (0 in) to 3.2mm (1/8 in) below the fill plug hole.
• When the differential is at operating temperature (warm), add enough lubricant to raise the level to the bottom of the fill plug hole.

    See also:

    AM
    The range for most AM stations is greater than for FM, especially at night. The longer range can cause station frequencies to interfere with each other. For better radio reception, most AM radio stati ...

    Symbols
    The vehicle has components and labels that use symbols instead of text. Symbols are shown along with the text describing the operation or information relating to a specific component, control, message ...

    Introduction
    The names, logos, emblems, slogans, vehicle model names, and vehicle body designs appearing in this manual including, but not limited to, GM, the GM logo, GMC, the GMC Truck Emblem, and SIERRA are ...