OILCHANGEDIY

2021 GMC Sierra HD

Maintenance & specsVERIFIED Jun 13, 2026
Engine Oil
0W-20
Full Synthetic
OEM spec · dexos1 Gen 3Buy oil
Capacity
8qt
with filter
7.7 qt without filter
Oil Filter
PF63E
ACDelco (OEM)
OEM spec: dexos1 Gen 3

The 2021 GMC Sierra HD takes 0W-20 Full Synthetic with a total capacity of 8 quarts (filter included). The OEM oil filter is the ACDelco PF63E, with 5 compatible alternatives listed below. Note: this vehicle has 6 active recalls — check the recalls section below. Below you’ll find complete maintenance specs, fluid capacities, parts, and links to buy what you need.

⚑ QUICK DIY TIPS FOR THE 2021 GMC SIERRA HD
  • Using the OEM filter (ACDelco PF63E) is recommended for warranty compliance.
  • Always use 0W-20 Full Synthetic as specified by GMC — using the wrong viscosity can void your powertrain warranty.
01

Oil & Filter

OilBuy
Viscosity0W-20
Oil typeFull Synthetic
Capacity (with filter)8 qt
Capacity (w/o filter)7.7 qt
OEM specdexos1 Gen 3
Filter Options
ACDelcoPF63EOEM
Buy
Wix51061
Buy
FramPH7575
Buy
ACDelcoPF2232OEM
Buy
DonaldsonP551313
Buy
FleetguardLF14000NN
Buy
OEM oil filter for 6.6L L8T V8 (gas)
Drain Bolt & Hardware

Drain bolt specs not yet added.

06

Safety Recalls

6
07

Technical Service Bulletins

732
08

Tools & Supplies

Oil Drain Pan
Catch the old oil cleanly
Shop on Amazon
Funnel
Spill-free refill
Shop on Amazon
Socket Wrench
For the drain plug
Shop on Amazon
0W-20 Oil
8+ quarts
Shop on Amazon
Shop parts for the GMC Sierra HD
Find oil, filters, and maintenance parts for the 2021 GMC Sierra HD on Amazon.
Shop parts ↗
Step-by-step guide
Detailed walkthrough with tips for first-timers.
Read guide
How often to change oil
Intervals, severe service, and what your car needs.
Read guide
Synthetic vs. conventional
Which oil type is right for your engine and budget.
Read guide
Other 2021 GMC models
Other GMC Sierra HD years
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