2002 GMC Sierra 1500: What is the oil type and capacity?

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James B. December 17, 2020
The 2002 GMC sierra 1500 oil type and capacity iS5w30 and 4.5 quarts. Your oil needs to be changed out someday. Every 5,000 to 10,000 miles or so is a good rule of thumb. If You don't replace it, there will be problems with the engine. Having high quality oil is essential for the engine to run smoothly. You will run into problems with the oil at some point. A common problem is an awful burning odor. This needs to be viewed closely as soon as possible or the car might explode. Old or bad oil can cause the engine to stop working. Knocking noise may arise from the engine. You could experience poor gas mileage.
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John A. January 2, 2020
The 2002 GMC Sierra 1500's base engine the 4.3L V6 requires 4.5 quarts of 5W30 synthetic oil. All optional engines available the 4.8L V8, the 5.3L V8 (non-flex fuel compatible), the 5.3L V8 (flex fuel compatible), and the 6.0L V8 for the 2002 GMC Sierra 1500 all require 6 quarts of 5W30 synthetic oil.
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