Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2002 GMC SierraOil Type & Capacity
OEM spec from the factory service manual for the 2D Pickup Extra Cab, 6.0 U, 4WD, Automatic variant.
Quick Answer
Oil Type
API - SAE 5W-30
Capacity (w/ Filter)
6.00 QTS.
5.67 L
Variant
2D Pickup Extra Cab, 6.0 U, 4WD, Automatic
Source: Factory service manual — 2002 GMC Sierra 2D Pickup Extra Cab, 6.0 U, 4WD, Automatic. View full manual section →
What You'll Need
Frequently Asked Questions
- What type of oil does a 2002 GMC Sierra take?
- The 2002 GMC Sierra requires API - SAE 5W-30. The exact spec may vary slightly by engine variant — this page shows the OEM recommendation for the 2D Pickup Extra Cab, 6.0 U, 4WD, Automatic configuration.
- How much oil does a 2002 GMC Sierra need?
- The 2002 GMC Sierra takes 6.00 QTS. (5.67 L) of engine oil with the filter replaced.
- Can I use synthetic oil in my 2002 GMC Sierra?
- Yes — synthetic oil that meets the API - SAE 5W-30 specification is acceptable and often preferred for better protection and longer change intervals.
- What happens if I use the wrong oil in my 2002 GMC Sierra?
- Using oil that does not meet the API - SAE 5W-30 specification can reduce engine protection, increase wear, and potentially void warranty coverage. Always use oil that meets the OEM spec.