GMC Sierra Owners Manuals
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Safety System Check
Now and then, check that the safety belt reminder light, safety belts, buckles, latch plates, retractors, and anchorages are all working properly.
Look for any other loose or damaged safety belt syst ...
Owner Checks and Services
At Each Fuel Stop
• Check the engine oil level.
See Engine Oil on page 10‑8.
Once a Month
• Check the tire inflation pressures. See Tire Pressure on page 10‑44.
• Inspect the ti ...
Fuel E85 (85% Ethanol)
Vehicles that have a FlexFuel badge and a yellow fuel cap can use either unleaded gasoline or ethanol fuel containing up to 85% ethanol (E85).
For all other vehicles, use only the unleaded gasoline d ...





