What is the tire size for a 2020 GMC Sierra 1500?

Depends on trim: 1500: 265/65R18, 2WD Crew Cab 147": 275/60R20, 2WD Crew Cab 147" Denali: 275/60R20, 2WD Crew Cab 147" Elevation: 255/70R17, 2WD Crew Cab 147" SLE: 255/70R17, 2WD Crew Cab 147" SLT: 265/65R18, 2WD Crew Cab 157": 265/65R18, 2WD Crew Cab 157" Denali: 255/70R17, 2WD Crew Cab 157" Elevation: 275/60R20, 2WD Crew Cab 157" SLE: 255/70R17, 2WD Crew Cab 157" SLT: 255/70R17, 2WD Double Cab 147": 275/60R20, 2WD Double Cab 147" Elevation: 255/70R17, 2WD Double Cab 147" SLE: 255/70R17, 2WD Double Cab 147" SLT: 265/65R18, 2WD Reg Cab 140": 275/60R20, 4WD Crew Cab 147": 255/70R17, 4WD Crew Cab 147" AT4: 265/65R18, 4WD Crew Cab 147" Denali: 255/70R17, 4WD Crew Cab 147" Elevation: 275/60R20, 4WD Crew Cab 147" SLE: 255/70R17, 4WD Crew Cab 147" SLT: 265/65R18, 4WD Crew Cab 157": 265/65R18, 4WD Crew Cab 157" AT4: 265/65R18, 4WD Crew Cab 157" Denali: 275/60R20, 4WD Crew Cab 157" Elevation: 255/70R17, 4WD Crew Cab 157" SLE: 255/70R17, 4WD Crew Cab 157" SLT: 265/65R18, 4WD Double Cab 147": 275/60R20, 4WD Double Cab 147" AT4: 255/70R17, 4WD Double Cab 147" Elevation: 275/60R20, 4WD Double Cab 147" SLE: 255/70R17, 4WD Double Cab 147" SLT: 265/65R18, 4WD Reg Cab 140": 275/60R20

How much horsepower does a 2020 GMC Sierra 1500 have?

285 to 355 hp depending on trim

2020 GMC Sierra 1500 Specifications

Compare all 34 trims side by side

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Specification	1500	2WD Crew Cab 147"	2WD Crew Cab 147" Denali	2WD Crew Cab 147" Elevation	2WD Crew Cab 147" SLE	2WD Crew Cab 147" SLT	2WD Crew Cab 157"	2WD Crew Cab 157" Denali	2WD Crew Cab 157" Elevation	2WD Crew Cab 157" SLE	2WD Crew Cab 157" SLT	2WD Double Cab 147"	2WD Double Cab 147" Elevation	2WD Double Cab 147" SLE	2WD Double Cab 147" SLT	2WD Reg Cab 140"	4WD Crew Cab 147"	4WD Crew Cab 147" AT4	4WD Crew Cab 147" Denali	4WD Crew Cab 147" Elevation	4WD Crew Cab 147" SLE	4WD Crew Cab 147" SLT	4WD Crew Cab 157"	4WD Crew Cab 157" AT4	4WD Crew Cab 157" Denali	4WD Crew Cab 157" Elevation	4WD Crew Cab 157" SLE	4WD Crew Cab 157" SLT	4WD Double Cab 147"	4WD Double Cab 147" AT4	4WD Double Cab 147" Elevation	4WD Double Cab 147" SLE	4WD Double Cab 147" SLT	4WD Reg Cab 140"
Engine
Horsepower	355 hp	355 hp	355 hp	285 hp	285 hp	355 hp	355 hp	285 hp	310 hp	310 hp	310 hp	310 hp	285 hp	310 hp	355 hp	310 hp	285 hp	355 hp	285 hp	355 hp	285 hp	355 hp	355 hp	355 hp	355 hp	310 hp	310 hp	355 hp	310 hp	285 hp	310 hp	310 hp	355 hp	310 hp
Torque	383 lb-ft	383 lb-ft	383 lb-ft	305 lb-ft	305 lb-ft	383 lb-ft	383 lb-ft	305 lb-ft	348 lb-ft	348 lb-ft	348 lb-ft	348 lb-ft	305 lb-ft	348 lb-ft	383 lb-ft	348 lb-ft	305 lb-ft	383 lb-ft	305 lb-ft	383 lb-ft	305 lb-ft	383 lb-ft	383 lb-ft	383 lb-ft	383 lb-ft	348 lb-ft	348 lb-ft	383 lb-ft	348 lb-ft	305 lb-ft	348 lb-ft	348 lb-ft	383 lb-ft	348 lb-ft
Displacement	5.3L	5.3L	5.3L	4.3L	4.3L	5.3L	5.3L	4.3L	2.7L	2.7L	2.7L	2.7L	4.3L	2.7L	5.3L	2.7L	4.3L	5.3L	4.3L	5.3L	4.3L	5.3L	5.3L	5.3L	5.3L	2.7L	2.7L	5.3L	2.7L	4.3L	2.7L	2.7L	5.3L	2.7L
Cylinders	8	8	8	6	6	8	8	6	4	4	4	4	6	4	8	4	6	8	6	8	6	8	8	8	8	4	4	8	4	6	4	4	8	4
Engine Type	Gas	Gas	Gas	Gas	Gas	Gas	Gas	Gas	Gas	Gas	Gas	Gas	Gas	Gas	Gas	Gas	Gas	Gas	Gas	Gas	Gas	Gas	Gas	Gas	Gas	Gas	Gas	Gas	Gas	Gas	Gas	Gas	Gas	Gas
Transmission	Automatic 4-spd	Automatic 4-spd	Automatic 4-spd	Automatic 4-spd	Automatic 4-spd	Automatic 4-spd	Automatic 4-spd	Automatic 4-spd	Automatic 4-spd	Automatic 4-spd	Automatic 4-spd	Automatic 4-spd	Automatic 4-spd	Automatic 4-spd	Automatic 4-spd	Automatic 4-spd	Automatic 4-spd	Automatic 4-spd	Automatic 4-spd	Automatic 4-spd	Automatic 4-spd	Automatic 4-spd	Automatic 4-spd	Automatic 4-spd	Automatic 4-spd	Automatic 4-spd	Automatic 4-spd	Automatic 4-spd	Automatic 4-spd	Automatic 4-spd	Automatic 4-spd	Automatic 4-spd	Automatic 4-spd	Automatic 4-spd
Drivetrain	Rear Wheel Drive	Rear Wheel Drive	Rear Wheel Drive	Rear Wheel Drive	Rear Wheel Drive	Rear Wheel Drive	Rear Wheel Drive	Rear Wheel Drive	Rear Wheel Drive	Rear Wheel Drive	Rear Wheel Drive	Rear Wheel Drive	Rear Wheel Drive	Rear Wheel Drive	Rear Wheel Drive	Rear Wheel Drive	Four Wheel Drive	Four Wheel Drive	Four Wheel Drive	Four Wheel Drive	Four Wheel Drive	Four Wheel Drive	Four Wheel Drive	Four Wheel Drive	Four Wheel Drive	Four Wheel Drive	Four Wheel Drive	Four Wheel Drive	Four Wheel Drive	Four Wheel Drive	Four Wheel Drive	Four Wheel Drive	Four Wheel Drive	Four Wheel Drive
Fuel Type	Regular Gasoline	Regular Gasoline	Regular Gasoline	Regular Gasoline	Regular Gasoline	Regular Gasoline	Regular Gasoline	Regular Gasoline	Regular Gasoline	Regular Gasoline	Regular Gasoline	Regular Gasoline	Regular Gasoline	Regular Gasoline	Regular Gasoline	Regular Gasoline	Regular Gasoline	Regular Gasoline	Regular Gasoline	Regular Gasoline	Regular Gasoline	Regular Gasoline	Regular Gasoline	Regular Gasoline	Regular Gasoline	Regular Gasoline	Regular Gasoline	Regular Gasoline	Regular Gasoline	Regular Gasoline	Regular Gasoline	Regular Gasoline	Regular Gasoline	Regular Gasoline
Performance
Fuel Tank	90.8L	90.8L	90.8L	106.0L	90.8L	90.8L	90.8L	90.8L	90.8L	90.8L	90.8L	90.8L	90.8L	90.8L	90.8L	90.8L	90.8L	90.8L	106.0L	90.8L	90.8L	90.8L	90.8L	90.8L	90.8L	90.8L	90.8L	90.8L	90.8L	90.8L	90.8L	90.8L	90.8L	90.8L
Curb Weight	4694 lbs	4694 lbs	4694 lbs	4694 lbs	4694 lbs	4694 lbs	4694 lbs	4694 lbs	4694 lbs	4694 lbs	4694 lbs	4694 lbs	4694 lbs	4694 lbs	4694 lbs	4694 lbs	4694 lbs	4694 lbs	4694 lbs	4694 lbs	4694 lbs	4694 lbs	4694 lbs	4694 lbs	4694 lbs	4694 lbs	4694 lbs	4694 lbs	4694 lbs	4694 lbs	4694 lbs	4694 lbs	4694 lbs	4694 lbs
Towing	4600 lbs	4600 lbs	4600 lbs	4600 lbs	4600 lbs	4600 lbs	4600 lbs	4600 lbs	4600 lbs	4600 lbs	4600 lbs	4600 lbs	4600 lbs	4600 lbs	4600 lbs	4600 lbs	4600 lbs	4600 lbs	4600 lbs	4600 lbs	4600 lbs	4600 lbs	4600 lbs	4600 lbs	4600 lbs	4600 lbs	4600 lbs	4600 lbs	4600 lbs	4600 lbs	4600 lbs	4600 lbs	4600 lbs	4600 lbs
Dimensions
Length	6128 mm	6128 mm	5886 mm	5832 mm	5886 mm	5886 mm	6128 mm	6128 mm	5886 mm	5886 mm	6128 mm	6128 mm	5886 mm	5886 mm	5886 mm	5886 mm	6128 mm	5886 mm	5832 mm	6128 mm	5886 mm	5886 mm	6128 mm	5886 mm	5886 mm	6128 mm	5886 mm	6128 mm	6128 mm	5886 mm	5886 mm	5886 mm	5886 mm	5886 mm
Width	2063 mm	2063 mm	2063 mm	2061 mm	2063 mm	2063 mm	2063 mm	2063 mm	2063 mm	2063 mm	2063 mm	2063 mm	2063 mm	2063 mm	2063 mm	2063 mm	2063 mm	2063 mm	2061 mm	2063 mm	2063 mm	2063 mm	2063 mm	2063 mm	2063 mm	2063 mm	2063 mm	2063 mm	2063 mm	2063 mm	2063 mm	2063 mm	2063 mm	2063 mm
Height	1914 mm	1914 mm	1917 mm	1920 mm	1917 mm	1917 mm	1914 mm	1914 mm	1921 mm	1917 mm	1914 mm	1914 mm	1921 mm	1921 mm	1921 mm	1917 mm	1915 mm	1993 mm	1921 mm	1915 mm	1918 mm	1918 mm	1987 mm	1990 mm	1918 mm	1915 mm	1918 mm	1915 mm	1915 mm	1921 mm	1921 mm	1921 mm	1921 mm	1918 mm
Wheelbase	3987 mm	3987 mm	3745 mm	3545 mm	3745 mm	3745 mm	3987 mm	3987 mm	3745 mm	3745 mm	3987 mm	3987 mm	3745 mm	3745 mm	3745 mm	3745 mm	3987 mm	3746 mm	3545 mm	3987 mm	3745 mm	3745 mm	3989 mm	3747 mm	3745 mm	3987 mm	3745 mm	3987 mm	3987 mm	3745 mm	3745 mm	3745 mm	3745 mm	3745 mm
Seats	5	5	5	3	6	6	6	6	6	6	6	6	6	6	6	6	6	5	3	5	6	6	5	5	5	6	6	6	6	6	6	6	6	6
Body	Pickup	Pickup	Pickup	Pickup	Pickup	Pickup	Pickup	Pickup	Pickup	Pickup	Pickup	Pickup	Pickup	Pickup	Pickup	Pickup	Pickup	Pickup	Pickup	Pickup	Pickup	Pickup	Pickup	Pickup	Pickup	Pickup	Pickup	Pickup	Pickup	Pickup	Pickup	Pickup	Pickup	Pickup
Tires & Wheels
Front Tires	265/65R18	275/60R20	275/60R20	255/70R17	255/70R17	265/65R18	265/65R18	255/70R17	275/60R20	255/70R17	255/70R17	275/60R20	255/70R17	255/70R17	265/65R18	275/60R20	255/70R17	265/65R18	255/70R17	275/60R20	255/70R17	265/65R18	265/65R18	265/65R18	275/60R20	255/70R17	255/70R17	265/65R18	275/60R20	255/70R17	275/60R20	255/70R17	265/65R18	275/60R20
Rear Tires	265/65R18	275/60R20	275/60R20	255/70R17	255/70R17	265/65R18	265/65R18	255/70R17	275/60R20	255/70R17	255/70R17	275/60R20	255/70R17	255/70R17	265/65R18	275/60R20	255/70R17	265/65R18	255/70R17	275/60R20	255/70R17	265/65R18	265/65R18	265/65R18	275/60R20	255/70R17	255/70R17	265/65R18	275/60R20	255/70R17	275/60R20	255/70R17	265/65R18	275/60R20
Wheel Size	inches	20"	20"	17"	17"	18"	18"	17"	20"	17"	17"	20"	17"	17"	18"	20"	17"	18"	17"	20"	17"	18"	18"	18"	20"	17"	17"	18"	20"	17"	20"	17"	18"	20"
Brakes & Suspension
Front Suspension	Independent	Independent	Independent	Independent	Independent	Independent	Independent	Independent	Independent	Independent	Independent	Independent	Independent	Independent	Independent	Independent	Independent	Independent	Independent	Independent	Independent	Independent	Independent	Independent	Independent	Independent	Independent	Independent	Independent	Independent	Independent	Independent	Independent	Independent
Rear Suspension	Solid Axle	Solid Axle	Solid Axle	Solid Axle	Solid Axle	Solid Axle	Solid Axle	Solid Axle	Solid Axle	Solid Axle	Solid Axle	Solid Axle	Solid Axle	Solid Axle	Solid Axle	Solid Axle	Solid Axle	Solid Axle	Solid Axle	Solid Axle	Solid Axle	Solid Axle	Solid Axle	Solid Axle	Solid Axle	Solid Axle	Solid Axle	Solid Axle	Solid Axle	Solid Axle	Solid Axle	Solid Axle	Solid Axle	Solid Axle
Fluids & Maintenance
Oil Type	5W-30	5W-30	5W-30	5W-30	5W-30	5W-30	5W-30	5W-30	5W-30	5W-30	5W-30	5W-30	5W-30	5W-30	5W-30	5W-30	5W-30	5W-30	5W-30	5W-30	5W-30	5W-30	5W-30	5W-30	5W-30	5W-30	5W-30	5W-30	5W-30	5W-30	5W-30	5W-30	5W-30	5W-30
Oil Capacity	5.7L	5.7L	5.7L	5.7L	5.7L	5.7L	5.7L	5.7L	5.7L	5.7L	5.7L	5.7L	5.7L	5.7L	5.7L	5.7L	5.7L	5.7L	5.7L	5.7L	5.7L	5.7L	5.7L	5.7L	5.7L	5.7L	5.7L	5.7L	5.7L	5.7L	5.7L	5.7L	5.7L	5.7L
Electric / Hybrid

2020 Sierra 1500 Maintenance Guide All Sierra 1500 Years Sierra 1500 for Sale