2021 GMC Sierra 1500
Maintenance & specsVERIFIED Oct 29, 2026
The 2021 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. Note: this vehicle has 7 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 1500
- Torque your drain plug to 25 Nm (18 ft-lbs) to avoid leaks or stripped threads.
- 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.
01
Oil & Filter
OilBuy
Viscosity0W-20
Oil typeFull Synthetic
Capacity (with filter)8 qt
Capacity (w/o filter)7.5 qt
OEM specdexos1 Gen 3
Filter Options
No filter cross-references added yet.
Drain Bolt & Hardware
Socket size15 mm
ThreadM16x1.5
Torque spec25 Nm
GasketRubber gasket
5th gen T1XX (5.3L/6.2L V8)
02
Fluid Specifications
Transmission FluidBuy
TypeDexron VI
Capacity5.5 qt
Change interval50,000 mi
Brake FluidBuy
DOT typeDOT 3
Change interval45,000 mi
CoolantBuy
TypeDex-Cool
ColorOrange
Capacity9 qt
Change interval120,000 mi
Power Steering FluidBuy
TypeGM Power Steering Fluid
Differential Fluid (rear)Buy
Type75W-90 GL-5
Capacity2.5 qt
Change interval60,000 mi
Differential Fluid (rear)Buy
Type75W-90 GL-5
Capacity2.5 qt
Change interval60,000 mi
03
Parts & Specifications
Tires
Size265/70R17
Front pressure35 PSI
Rear pressure35 PSI
Wiper Blades
GM84578275
Buy04
Maintenance Schedule
≈ every 6 months
- ▸Change Engine Oil & Filter
05
Torque Specifications
06
Safety Recalls
707
Technical Service Bulletins
1058Towing & Payload
Max Towing
13,300lbs
Max Payload
2,240lbs
Curb Weight
4,400lbs
GVWR
7,100lbs
Max Tongue Weight
1,330lbs
Hitch Class
IV
Source: manufacturer
Estimated Current Value
Original MSRP
$52,000
Private Party
$30,134–$33,306
Dealer Retail
$34,892–$39,650
Trade-In
$26,962–$30,134
Depreciation
39%
Estimated values assume average condition and mileage for vehicle age.
Source: estimated
Save by doing it yourself
A shop typically charges $70–$160 for this service. Buy the parts and save.
08
Tools & Supplies
Shop parts for the GMC Sierra 1500
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Other GMC Sierra 1500 years
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