Specifications Comparison: 2021 Chevrolet Silverado 1500 vs 2024 GMC Sierra 1500

Legroom

2021 Chevrolet Silverado 1500

Legroom (Imp.)

Trim	Eng.	Drive train	1st Row Legroom (in)	2nd Row Legroom (in)
Crew Cab Custom	2.7L	RWD	44	43
Crew Cab Custom	4.3L V6	RWD	44	43
Crew Cab Custom	5.3L V8	RWD	44	43
Crew Cab Custom	2.7L	4WD	44	43
Crew Cab Custom	4.3L V6	4WD	44	43
Crew Cab Custom	5.3L V8	4WD	44	43
Crew Cab Custom Trail Boss	4.3L V6	4WD	44	43
Crew Cab Custom Trail Boss	5.3L V8	4WD	44	43
Crew Cab Custom Trail Boss	6.2L V8	4WD	44	43
Crew Cab High Country	5.3L V8	RWD	44	43
Crew Cab High Country	3.0L I6	RWD	44	43
Crew Cab High Country	5.3L V8	4WD	44	43
Crew Cab High Country	3.0L I6	4WD	44	43
Crew Cab High Country	6.2L V8	4WD	44	43
Crew Cab LT	2.7L	RWD	44	43
Crew Cab LT	5.3L V8	RWD	44	43
Crew Cab LT	3.0L I6	RWD	44	43
Crew Cab LT	2.7L	4WD	44	43
Crew Cab LT	5.3L V8	4WD	44	43
Crew Cab LT	3.0L I6	4WD	44	43
Crew Cab LT Fleet	2.7L	4WD	44	43
Crew Cab LT Trail Boss	5.3L V8	4WD	44	43
Crew Cab LT Trail Boss	6.2L V8	4WD	44	43
Crew Cab LTZ	5.3L V8	RWD	44	43
Crew Cab LTZ	3.0L I6	RWD	44	43
Crew Cab LTZ	5.3L V8	4WD	44	43
Crew Cab LTZ	3.0L I6	4WD	44	43
Crew Cab LTZ	6.2L V8	4WD	44	43
Crew Cab RST	2.7L	RWD	44	43
Crew Cab RST	5.3L V8	RWD	44	43
Crew Cab RST	3.0L I6	RWD	44	43
Crew Cab RST	2.7L	4WD	44	43
Crew Cab RST	5.3L V8	4WD	44	43
Crew Cab RST	3.0L I6	4WD	44	43
Crew Cab RST	6.2L V8	4WD	44	43
Crew Cab Work	4.3L V6	RWD	44	43
Crew Cab Work	2.7L	RWD	44	43
Crew Cab Work	5.3L V8	RWD	44	43
Crew Cab Work	4.3L V6	4WD	44	43
Crew Cab Work	2.7L	4WD	44	43
Crew Cab Work	5.3L V8	4WD	44	43
Extended Cab Custom	2.7L	RWD	44	35
Extended Cab Custom	4.3L V6	RWD	44	35
Extended Cab Custom	5.3L V8	RWD	44	35
Extended Cab Custom	2.7L	4WD	44	35
Extended Cab Custom	4.3L V6	4WD	44	35
Extended Cab Custom	5.3L V8	4WD	44	35
Extended Cab Custom Trail Boss	4.3L V6	4WD	44	35
Extended Cab Custom Trail Boss	5.3L V8	4WD	44	35
Extended Cab Custom Trail Boss	6.2L V8	4WD	44	35
Extended Cab LT	2.7L	RWD	44	35
Extended Cab LT	5.3L V8	RWD	44	35
Extended Cab LT	3.0L I6	RWD	44	35
Extended Cab LT	2.7L	4WD	44	35
Extended Cab LT	5.3L V8	4WD	44	35
Extended Cab LT	3.0L I6	4WD	44	35
Extended Cab LT Fleet	2.7L	4WD	44	35
Extended Cab RST	2.7L	4WD	44	35
Extended Cab RST	5.3L V8	4WD	44	35
Extended Cab RST	3.0L I6	4WD	44	35
Extended Cab RST	6.2L V8	4WD	44	35
Extended Cab Work	4.3L V6	RWD	44	35
Extended Cab Work	2.7L	RWD	44	35
Extended Cab Work	5.3L V8	RWD	44	35
Extended Cab Work	4.3L V6	4WD	44	35
Extended Cab Work	2.7L	4WD	44	35
Extended Cab Work	5.3L V8	4WD	44	35
Regular Cab Work	4.3L V6	RWD	44
Regular Cab Work	2.7L	RWD	44
Regular Cab Work	5.3L V8	RWD	44
Regular Cab Work	4.3L V6	4WD	44
Regular Cab Work	2.7L	4WD	44
Regular Cab Work	5.3L V8	4WD	44

2024 GMC Sierra 1500

Legroom (Imp.)

Trim	Eng.	Drive train	1st Row Legroom (in)	2nd Row Legroom (in)
Denali Crew Cab 147"	5.3L V8	RWD	44.53	43.4
Denali Crew Cab 147"	5.3L V8	4WD	44.53	43.4
Denali Crew Cab 157"	5.3L V8	4WD	44.53	43.4
Elevation Crew Cab 147"		RWD	44.53	43.4
Elevation Double Cab 147"		RWD	44.53	35.24
Elevation Crew Cab 147" w/3SB		4WD	44.53	43.4
Elevation Crew Cab 147" w/3VL		4WD	44.53	43.4
Elevation Crew Cab 157"		4WD	44.53	43.4
Elevation Double Cab 147" w/3SB		4WD	44.53	35.24
Elevation Double Cab 147" w/3VL		4WD	44.53	35.24
Pro Crew Cab 147"		RWD	44.53	43.4
Pro Double Cab 147"		RWD	44.53	35.24
Pro Reg Cab 126"		RWD	44.53
Pro Reg Cab 140"		RWD	44.53
Pro Crew Cab 147"		4WD	44.53	43.4
Pro Crew Cab 157"		4WD	44.53	43.4
Pro Double Cab 147"		4WD	44.53	35.24
Pro Reg Cab 126"		4WD	44.53
Pro Reg Cab 140"		4WD	44.53
SLE Crew Cab 147"		RWD	44.53	43.4
SLE Double Cab 147"		RWD	44.53	35.24
SLE Crew Cab 147"		4WD	44.53	43.4
SLE Crew Cab 157"		4WD	44.53	43.4
SLE Double Cab 147"		4WD	44.53	35.24
SLT Crew Cab 147"	5.3L V8	RWD	44.53	43.4
SLT Crew Cab 147"	5.3L V8	4WD	44.53	43.4
SLT Crew Cab 157"	5.3L V8	4WD	44.53	43.4
AT4 Crew Cab 147"	3.0L I6	4WD	44.53	43.4
AT4 Crew Cab 157"	3.0L I6	4WD	44.53	43.4
AT4X Crew Cab 147"	3.0L I6	4WD	44.53	43.4
Denali Ultimate Crew Cab 147"	6.2L V8	4WD	44.53	43.4

2021 Chevrolet Silverado 1500

Legroom (Metric)

Trim	Eng.	Drive train	1st Row Legroom (cm)	2nd Row Legroom (cm)
Crew Cab Custom	2.7L	RWD	111	109
Crew Cab Custom	4.3L V6	RWD	111	109
Crew Cab Custom	5.3L V8	RWD	111	109
Crew Cab Custom	2.7L	4WD	111	109
Crew Cab Custom	4.3L V6	4WD	111	109
Crew Cab Custom	5.3L V8	4WD	111	109
Crew Cab Custom Trail Boss	4.3L V6	4WD	111	109
Crew Cab Custom Trail Boss	5.3L V8	4WD	111	109
Crew Cab Custom Trail Boss	6.2L V8	4WD	111	109
Crew Cab High Country	5.3L V8	RWD	111	109
Crew Cab High Country	3.0L I6	RWD	111	109
Crew Cab High Country	5.3L V8	4WD	111	109
Crew Cab High Country	3.0L I6	4WD	111	109
Crew Cab High Country	6.2L V8	4WD	111	109
Crew Cab LT	2.7L	RWD	111	109
Crew Cab LT	5.3L V8	RWD	111	109
Crew Cab LT	3.0L I6	RWD	111	109
Crew Cab LT	2.7L	4WD	111	109
Crew Cab LT	5.3L V8	4WD	111	109
Crew Cab LT	3.0L I6	4WD	111	109
Crew Cab LT Fleet	2.7L	4WD	111	109
Crew Cab LT Trail Boss	5.3L V8	4WD	111	109
Crew Cab LT Trail Boss	6.2L V8	4WD	111	109
Crew Cab LTZ	5.3L V8	RWD	111	109
Crew Cab LTZ	3.0L I6	RWD	111	109
Crew Cab LTZ	5.3L V8	4WD	111	109
Crew Cab LTZ	3.0L I6	4WD	111	109
Crew Cab LTZ	6.2L V8	4WD	111	109
Crew Cab RST	2.7L	RWD	111	109
Crew Cab RST	5.3L V8	RWD	111	109
Crew Cab RST	3.0L I6	RWD	111	109
Crew Cab RST	2.7L	4WD	111	109
Crew Cab RST	5.3L V8	4WD	111	109
Crew Cab RST	3.0L I6	4WD	111	109
Crew Cab RST	6.2L V8	4WD	111	109
Crew Cab Work	4.3L V6	RWD	111	109
Crew Cab Work	2.7L	RWD	111	109
Crew Cab Work	5.3L V8	RWD	111	109
Crew Cab Work	4.3L V6	4WD	111	109
Crew Cab Work	2.7L	4WD	111	109
Crew Cab Work	5.3L V8	4WD	111	109
Extended Cab Custom	2.7L	RWD	111	88
Extended Cab Custom	4.3L V6	RWD	111	88
Extended Cab Custom	5.3L V8	RWD	111	88
Extended Cab Custom	2.7L	4WD	111	88
Extended Cab Custom	4.3L V6	4WD	111	88
Extended Cab Custom	5.3L V8	4WD	111	88
Extended Cab Custom Trail Boss	4.3L V6	4WD	111	88
Extended Cab Custom Trail Boss	5.3L V8	4WD	111	88
Extended Cab Custom Trail Boss	6.2L V8	4WD	111	88
Extended Cab LT	2.7L	RWD	111	88
Extended Cab LT	5.3L V8	RWD	111	88
Extended Cab LT	3.0L I6	RWD	111	88
Extended Cab LT	2.7L	4WD	111	88
Extended Cab LT	5.3L V8	4WD	111	88
Extended Cab LT	3.0L I6	4WD	111	88
Extended Cab LT Fleet	2.7L	4WD	111	88
Extended Cab RST	2.7L	4WD	111	88
Extended Cab RST	5.3L V8	4WD	111	88
Extended Cab RST	3.0L I6	4WD	111	88
Extended Cab RST	6.2L V8	4WD	111	88
Extended Cab Work	4.3L V6	RWD	111	88
Extended Cab Work	2.7L	RWD	111	88
Extended Cab Work	5.3L V8	RWD	111	88
Extended Cab Work	4.3L V6	4WD	111	88
Extended Cab Work	2.7L	4WD	111	88
Extended Cab Work	5.3L V8	4WD	111	88
Regular Cab Work	4.3L V6	RWD	111
Regular Cab Work	2.7L	RWD	111
Regular Cab Work	5.3L V8	RWD	111
Regular Cab Work	4.3L V6	4WD	111
Regular Cab Work	2.7L	4WD	111
Regular Cab Work	5.3L V8	4WD	111

2024 GMC Sierra 1500

Legroom (Metric)

Trim	Eng.	Drive train	1st Row Legroom (cm)	2nd Row Legroom (cm)
Denali Crew Cab 147"	5.3L V8	RWD	113	110
Denali Crew Cab 147"	5.3L V8	4WD	113	110
Denali Crew Cab 157"	5.3L V8	4WD	113	110
Elevation Crew Cab 147"		RWD	113	110
Elevation Double Cab 147"		RWD	113	90
Elevation Crew Cab 147" w/3SB		4WD	113	110
Elevation Crew Cab 147" w/3VL		4WD	113	110
Elevation Crew Cab 157"		4WD	113	110
Elevation Double Cab 147" w/3SB		4WD	113	90
Elevation Double Cab 147" w/3VL		4WD	113	90
Pro Crew Cab 147"		RWD	113	110
Pro Double Cab 147"		RWD	113	90
Pro Reg Cab 126"		RWD	113
Pro Reg Cab 140"		RWD	113
Pro Crew Cab 147"		4WD	113	110
Pro Crew Cab 157"		4WD	113	110
Pro Double Cab 147"		4WD	113	90
Pro Reg Cab 126"		4WD	113
Pro Reg Cab 140"		4WD	113
SLE Crew Cab 147"		RWD	113	110
SLE Double Cab 147"		RWD	113	90
SLE Crew Cab 147"		4WD	113	110
SLE Crew Cab 157"		4WD	113	110
SLE Double Cab 147"		4WD	113	90
SLT Crew Cab 147"	5.3L V8	RWD	113	110
SLT Crew Cab 147"	5.3L V8	4WD	113	110
SLT Crew Cab 157"	5.3L V8	4WD	113	110
AT4 Crew Cab 147"	3.0L I6	4WD	113	110
AT4 Crew Cab 157"	3.0L I6	4WD	113	110
AT4X Crew Cab 147"	3.0L I6	4WD	113	110
Denali Ultimate Crew Cab 147"	6.2L V8	4WD	113	110