GMC 2006 Sierra - Manual (Page 434)

What Kind of Engine Oil to Use
Look for two things:
• GM6094M
Your vehicle’s engine requires oil meeting GM
Standard GM6094M. You should look for and use
only an oil that meets GM Standard GM6094M.
• SAE 5W-30
As shown in the viscosity chart, SAE 5W-30 is best
for your vehicle.
These numbers on an oil container show its
viscosity, or thickness. Do not use other viscosity
oils such as SAE 20W-50.
Oils meeting these
requirements should also
have the starburst symbol
on the container. This
symbol indicates that the
oil has been certified by
the American Petroleum
Institute (API).
You should look for this information on the oil container,
and use only those oils that are identified as meeting
GM Standard GM6094M and have the starburst symbol
on the front of the oil container.
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