The oil filter size for a 2015 GMC Sierra depends on which engine you have. Most Sierra models use a standard spin-on filter with a 3/4-16 thread, but the canister length and exact part number vary by engine (4.3L V6, 5.3L V8, or 6.2L V8). To be sure, identify your engine and verify the replacement by checking the filter you remove or the official parts guide for your vehicle.
Engine options and typical filter characteristics
Here are the common engines for the 2015 Sierra and what that usually means for the oil filter size in practice. The thread size is generally 3/4-16 across these engines, but canister length varies by brand and design. Use an OEM or widely compatible aftermarket filter designed for GM 3/4-16 spin-on filters.
- 4.3L V6 (gasoline) — standard spin-on filter with 3/4-16 threads; canister lengths commonly around 3 to 3.5 inches, depending on brand.
- 5.3L V8 (gasoline) — same 3/4-16 thread; typical canister lengths around 3 to 4 inches, depending on brand and design.
- 6.2L V8 (gasoline) — same 3/4-16 thread; typical canister lengths around 3 to 4 inches, depending on brand and design.
Note: The exact part number and dimensions vary by brand. The best way to ensure a perfect fit is to match the old filter or consult the GM original equipment (AC Delco) filter that’s listed for your engine and vehicle by part lookup using your VIN.
How to confirm the exact oil filter size for your Sierra
- Find the exact engine in your Sierra (4.3L, 5.3L, or 6.2L). The engine badge on the engine bay or the owner’s manual can confirm this.
- Check the oil filter you currently have on the vehicle for the part number or consult the filter's base where the part number is often printed.
- Use a reputable parts lookup (GM's official parts site, or a trusted aftermarket supplier) and input your year, model, and engine to obtain the exact filter model and size compatible with your vehicle.
- Purchase an OEM or cross-referenced filter (for example, an AC Delco GM Original Equipment filter, or a Wix/Purolator equivalent designed for GM 3/4-16 spin-on filters) that matches the identified part number.
When replacing, ensure you also replace the gasket, lubricate it lightly with clean oil, and hand-tighten to the manufacturer’s recommended torque to avoid leaks.
Summary
- Oil filter size on a 2015 GMC Sierra depends on engine: 4.3L V6, 5.3L V8, or 6.2L V8.
- Common thread size is 3/4-16 across these engines, with canister length varying by brand (roughly 3 to 4 inches).
- Always verify with the old filter, the owner’s manual, or a VIN-based parts lookup to ensure you get the exact correct filter for your truck.
Bottom line: by identifying your engine and using a 3/4-16 spin-on filter sized to the brand you choose, you’ll typically find a compatible option for a 2015 Sierra. When in doubt, reference the original part number or use a VIN-driven parts lookup to lock in the exact size.