Maintenance and Fluid Information for 2001 GMC C3500HD Sierra - Regular Cab Chevrolet/GMC L18
An oil change on the 2001 GMC C3500HD Sierra - Regular Cab Chevrolet/GMC L18 starts with selecting the right lubricant. The catalog lists these engine-oil viscosity grades: 5W-30. The matching product listings include Signature Series 5W-30 Synthetic Motor Oil, XL 5W-30 Synthetic Motor Oil, OE 5W-30 Synthetic Motor Oil. The grade alone is not the whole specification, so check the manufacturer’s requirements before making your selection.
What oil filter is listed for my 2001 GMC C3500HD Sierra - Regular Cab Chevrolet/GMC L18, and what is the part number?
The oil-filter part numbers listed for this vehicle include EAO59-EA, P550507-EA, 57099-EA.
What synthetic oil options are available for my 2001 GMC C3500HD Sierra - Regular Cab Chevrolet/GMC L18?
Synthetic engine-oil listings for this vehicle include 5W-30. A synthetic listing does not by itself mean the vehicle manufacturer requires full synthetic oil.
How do I find the correct oil-change interval for my 2001 GMC C3500HD Sierra - Regular Cab Chevrolet/GMC L18?
Use the manufacturer’s maintenance schedule for this engine and operating conditions. The available application data does not establish an exact oil-change interval.

