Oil
- Viscosity
- 0W-20
- Oil type
- Full Synthetic
- Capacity (with filter)
- 8 qt
- Capacity (without filter)
- 7.5 qt
OEM notes: dexos1 Gen 3
2020 GMC Sierra 1500 Maintenance & Specs
Everything you need to maintain your 2020 GMC Sierra 1500 — oil specs, maintenance schedule, recalls, and more.
The 2020 GMC Sierra 1500 takes 0W-20 Full Synthetic with a total capacity of 8 quarts (filter included). You’ll need a 15mm socket for the drain plug, torqued to 25 Nm. The OEM oil filter is the ACDelco PF63, with 4 compatible alternatives listed below. Note: this vehicle has 12 active recalls — check the recalls section below. Below you’ll find complete maintenance specs, fluid capacities, parts, and links to buy what you need.
Data last verified: April 30, 2026
Oil
0W-20
Full Synthetic
Buy on Amazon →
Capacity
8 qt
with filter
Drain plug
15 mm
25 Nm torque
Filter
PF63
ACDelco (OEM)
Buy on Amazon →
OEM spec: dexos1 Gen 3
Quick DIY Tips for the 2020 GMC Sierra 1500
- Torque your drain plug to 25 Nm (18 ft-lbs) to avoid leaks or stripped threads.
- Using the OEM filter (ACDelco PF63) is recommended for warranty compliance.
- Always use 0W-20 Full Synthetic as specified by GMC — using the wrong viscosity can void your powertrain warranty.
- Check the maintenance schedule below for your next service interval.
Filter options
Drain bolt & hardware
- Socket size
- 15 mm
- Thread size
- M16x1.5
- Torque spec
- 25 Nm
- Gasket type
- Rubber gasket
Notes: 5th gen T1XX (5.3L/6.2L V8)
Fluid specifications
Transmission Fluid
Buy →- Type
- Dexron VI
- Capacity
- 5.5 qt
- Change interval
- 50,000 mi
Brake Fluid
Buy →- DOT type
- DOT 3
- Change interval
- 45,000 mi
Coolant
Buy →- Type
- Dex-Cool
- Color
- Orange
- Capacity
- 9 qt
- Change interval
- 120,000 mi
Power Steering Fluid
Buy →- Type
- GM Power Steering Fluid
Differential Fluid (rear)
Buy →- Type
- 75W-90 GL-5
- Capacity
- 2.5 qt
- Change interval
- 60,000 mi
Differential Fluid (rear)
Buy →- Type
- 75W-90 GL-5
- Capacity
- 2.5 qt
- Change interval
- 60,000 mi
Parts & specifications
Spark Plugs
- Type
- Iridium
- Gap
- 0.040
- Quantity
- 4
- Change interval
- 100,000 mi
Battery
- Group size
- 48
- CCA
- 750
Tires
- Size
- 265/70R17
- Front pressure
- 35 PSI
- Rear pressure
- 35 PSI
Air Filter
Cabin Air Filter
Brake Pads
Wiper Blades
Maintenance schedule
Select a mileage interval above to see scheduled maintenance items.
Towing & Payload
Max Towing Capacity
13,300 lbs
Max Payload
2,240 lbs
Curb Weight
4,400 lbs
GVWR
7,100 lbs
Max Tongue Weight
1,330 lbs
Hitch Class
IV
Source: manufacturer
Estimated Current Value
Original MSRP
$52,000
Private Party Value
$27,664 – $30,576
Dealer Retail Value
$32,032 – $36,400
Trade-In Value
$24,752 – $27,664
Depreciation
44%
Estimated values assume average condition and mileage for vehicle age.
Source: estimated
Safety recalls12
Technical Service Bulletins1097
Torque specifications
- lug nut
- 120 ft-lbs / 162.7 Nm
- spark plug
- 18 ft-lbs / 24.4 Nm
14mm thread, aluminum head
Save by doing it yourself
A shop typically charges $70–$160 for this service. Buy the parts yourself and save.
Shop Parts for the GMC Sierra 1500
Find oil, filters, and maintenance parts for the 2020 GMC Sierra 1500 on Amazon.
Tools & supplies
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 →Have info for this vehicle?
Help fellow owners — submit specs from your owner's manual.
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