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

Legroom

2021 GMC Sierra 1500

Legroom (Imp.)

Trim	Eng.	Drive train	1st Row Legroom (in)	2nd Row Legroom (in)
Crew Cab	4.3L V6	RWD	44	43
Crew Cab	5.3L V8	RWD	44	43
Crew Cab	2.7L	RWD	44	43
Crew Cab	4.3L V6	4WD	44	43
Crew Cab	5.3L V8	4WD	44	43
Crew Cab	2.7L	4WD	44	43
Crew Cab AT4	5.3L V8	4WD	44	43
Crew Cab AT4	3.0L I6	4WD	44	43
Crew Cab AT4	6.2L V8	4WD	44	43
Crew Cab Denali	5.3L V8	RWD	44	43
Crew Cab Denali	3.0L I6	RWD	44	43
Crew Cab Denali	5.3L V8	4WD	44	43
Crew Cab Denali	3.0L I6	4WD	44	43
Crew Cab Denali	6.2L V8	4WD	44	43
Crew Cab Elevation	2.7L	RWD	44	43
Crew Cab Elevation	5.3L V8	RWD	44	43
Crew Cab Elevation	3.0L I6	RWD	44	43
Crew Cab Elevation 3VL	2.7L	4WD	44	43
Crew Cab Elevation	2.7L	4WD	44	43
Crew Cab Elevation	5.3L V8	4WD	44	43
Crew Cab Elevation	3.0L I6	4WD	44	43
Crew Cab SLE	2.7L	RWD	44	43
Crew Cab SLE	5.3L V8	RWD	44	43
Crew Cab SLE	3.0L I6	RWD	44	43
Crew Cab SLE	2.7L	4WD	44	43
Crew Cab SLE	5.3L V8	4WD	44	43
Crew Cab SLE	3.0L I6	4WD	44	43
Crew Cab SLT	5.3L V8	RWD	44	43
Crew Cab SLT	3.0L I6	RWD	44	43
Crew Cab SLT	5.3L V8	4WD	44	43
Crew Cab SLT	5.3L I6	4WD	44	43
Crew Cab SLT	3.0L V8	4WD	44	43
Extended Cab	4.3L V6	RWD	44	35
Extended Cab	5.3L V8	RWD	44	35
Extended Cab	2.7L	RWD	44	35
Extended Cab	4.3L V6	4WD	44	35
Extended Cab	5.3L V8	4WD	44	35
Extended Cab	2.7L	4WD	44	35
Extended Cab Elevation	2.7L	RWD	44	35
Extended Cab Elevation	5.3L V8	RWD	44	35
Extended Cab Elevation	3.0L I6	RWD	44	35
Extended Cab Elevation 3VL	2.7L	4WD	44	35
Extended Cab Elevation	2.7L	4WD	44	35
Extended Cab Elevation	5.3L V8	4WD	44	35
Extended Cab Elevation	3.0L I6	4WD	44	35
Extended Cab SLE	2.7L	RWD	44	35
Extended Cab SLE	5.3L V8	RWD	44	35
Extended Cab SLE	3.0L I6	RWD	44	35
Extended Cab SLE	2.7L	4WD	44	35
Extended Cab SLE	5.3L V8	4WD	44	35
Extended Cab SLE	3.0L I6	4WD	44	35
Regular Cab	4.3L V6	RWD	44
Regular Cab	5.3L V8	RWD	44
Regular Cab	4.3L V6	4WD	44
Regular Cab	5.3L V8	4WD	44

2024 Chevrolet Silverado 1500

Legroom (Imp.)

Trim	Eng.	Drive train	1st Row Legroom (in)	2nd Row Legroom (in)
Custom Crew Cab 147"	2.7L	RWD	44.53	43.4
Custom Double Cab 147"	2.7L	RWD	44.53	35.24
Custom Crew Cab 147"	2.7L	4WD	44.53	43.4
Custom Crew Cab 157"	2.7L	4WD	44.53	43.4
Custom Double Cab 147"	2.7L	4WD	44.53	35.24
High Country Crew Cab 147"	5.3L V8	RWD	44.53	43.4
High Country Crew Cab 147"	5.3L V8	4WD	44.53	43.4
High Country Crew Cab 157"	5.3L V8	4WD	44.53	43.4
LT Crew Cab 147"	2.7L	RWD	44.53	43.4
LT Crew Cab 157"	2.7L	RWD	44.53	43.4
LT Double Cab 147"	2.7L	RWD	44.53	35.24
LT Crew Cab 147" w/1LT	2.7L	4WD	44.53	43.4
LT Crew Cab 147" w/2FL	2.7L	4WD	44.53	43.4
LT Crew Cab 157"	2.7L	4WD	44.53	43.4
LT Double Cab 147" w/1LT	2.7L	4WD	44.53	35.24
LT Double Cab 147" w/2FL	2.7L	4WD	44.53	35.24
LTZ Crew Cab 147"	5.3L V8	RWD	44.53	43.4
LTZ Crew Cab 147"	5.3L V8	4WD	44.53	43.4
LTZ Crew Cab 157"	5.3L V8	4WD	44.53	43.4
RST Crew Cab 147"	2.7L	RWD	44.53	43.4
RST Crew Cab 147"	2.7L	4WD	44.53	43.4
RST Crew Cab 157"	2.7L	4WD	44.53	43.4
RST Double Cab 147"	2.7L	4WD	44.53	35.24
Work Crew Cab 147"	2.7L	RWD	44.53	43.4
Work Crew Cab 157"	2.7L	RWD	44.53	43.4
Work Double Cab 147"	2.7L	RWD	44.53	35.24
Work Reg Cab 126"	2.7L	RWD	44.53
Work Reg Cab 140"	2.7L	RWD	44.53
Work Crew Cab 147"	2.7L	4WD	44.53	43.4
Work Crew Cab 157"	2.7L	4WD	44.53	43.4
Work Double Cab 147"	2.7L	4WD	44.53	35.24
Work Reg Cab 126"	2.7L	4WD	44.53
Work Reg Cab 140"	2.7L	4WD	44.53
Custom Trail Boss Crew Cab 147"	2.7L	4WD	44.53	43.4
Custom Trail Boss Crew Cab 157"	2.7L	4WD	44.53	43.4
LT Trail Boss Crew Cab 147"	2.7L	4WD	44.53	43.4
LT Trail Boss Crew Cab 157"	2.7L	4WD	44.53	43.4
ZR2 Crew Cab 147"	3.0L I6	4WD	44.53	43.4

2021 GMC Sierra 1500

Legroom (Metric)

Trim	Eng.	Drive train	1st Row Legroom (cm)	2nd Row Legroom (cm)
Crew Cab	4.3L V6	RWD	111	109
Crew Cab	5.3L V8	RWD	111	109
Crew Cab	2.7L	RWD	111	109
Crew Cab	4.3L V6	4WD	111	109
Crew Cab	5.3L V8	4WD	111	109
Crew Cab	2.7L	4WD	111	109
Crew Cab AT4	5.3L V8	4WD	111	109
Crew Cab AT4	3.0L I6	4WD	111	109
Crew Cab AT4	6.2L V8	4WD	111	109
Crew Cab Denali	5.3L V8	RWD	111	109
Crew Cab Denali	3.0L I6	RWD	111	109
Crew Cab Denali	5.3L V8	4WD	111	109
Crew Cab Denali	3.0L I6	4WD	111	109
Crew Cab Denali	6.2L V8	4WD	111	109
Crew Cab Elevation	2.7L	RWD	111	109
Crew Cab Elevation	5.3L V8	RWD	111	109
Crew Cab Elevation	3.0L I6	RWD	111	109
Crew Cab Elevation 3VL	2.7L	4WD	111	109
Crew Cab Elevation	2.7L	4WD	111	109
Crew Cab Elevation	5.3L V8	4WD	111	109
Crew Cab Elevation	3.0L I6	4WD	111	109
Crew Cab SLE	2.7L	RWD	111	109
Crew Cab SLE	5.3L V8	RWD	111	109
Crew Cab SLE	3.0L I6	RWD	111	109
Crew Cab SLE	2.7L	4WD	111	109
Crew Cab SLE	5.3L V8	4WD	111	109
Crew Cab SLE	3.0L I6	4WD	111	109
Crew Cab SLT	5.3L V8	RWD	111	109
Crew Cab SLT	3.0L I6	RWD	111	109
Crew Cab SLT	5.3L V8	4WD	111	109
Crew Cab SLT	5.3L I6	4WD	111	109
Crew Cab SLT	3.0L V8	4WD	111	109
Extended Cab	4.3L V6	RWD	111	88
Extended Cab	5.3L V8	RWD	111	88
Extended Cab	2.7L	RWD	111	88
Extended Cab	4.3L V6	4WD	111	88
Extended Cab	5.3L V8	4WD	111	88
Extended Cab	2.7L	4WD	111	88
Extended Cab Elevation	2.7L	RWD	111	88
Extended Cab Elevation	5.3L V8	RWD	111	88
Extended Cab Elevation	3.0L I6	RWD	111	88
Extended Cab Elevation 3VL	2.7L	4WD	111	88
Extended Cab Elevation	2.7L	4WD	111	88
Extended Cab Elevation	5.3L V8	4WD	111	88
Extended Cab Elevation	3.0L I6	4WD	111	88
Extended Cab SLE	2.7L	RWD	111	88
Extended Cab SLE	5.3L V8	RWD	111	88
Extended Cab SLE	3.0L I6	RWD	111	88
Extended Cab SLE	2.7L	4WD	111	88
Extended Cab SLE	5.3L V8	4WD	111	88
Extended Cab SLE	3.0L I6	4WD	111	88
Regular Cab	4.3L V6	RWD	111
Regular Cab	5.3L V8	RWD	111
Regular Cab	4.3L V6	4WD	111
Regular Cab	5.3L V8	4WD	111

2024 Chevrolet Silverado 1500

Legroom (Metric)

Trim	Eng.	Drive train	1st Row Legroom (cm)	2nd Row Legroom (cm)
Custom Crew Cab 147"	2.7L	RWD	113	110
Custom Double Cab 147"	2.7L	RWD	113	90
Custom Crew Cab 147"	2.7L	4WD	113	110
Custom Crew Cab 157"	2.7L	4WD	113	110
Custom Double Cab 147"	2.7L	4WD	113	90
High Country Crew Cab 147"	5.3L V8	RWD	113	110
High Country Crew Cab 147"	5.3L V8	4WD	113	110
High Country Crew Cab 157"	5.3L V8	4WD	113	110
LT Crew Cab 147"	2.7L	RWD	113	110
LT Crew Cab 157"	2.7L	RWD	113	110
LT Double Cab 147"	2.7L	RWD	113	90
LT Crew Cab 147" w/1LT	2.7L	4WD	113	110
LT Crew Cab 147" w/2FL	2.7L	4WD	113	110
LT Crew Cab 157"	2.7L	4WD	113	110
LT Double Cab 147" w/1LT	2.7L	4WD	113	90
LT Double Cab 147" w/2FL	2.7L	4WD	113	90
LTZ Crew Cab 147"	5.3L V8	RWD	113	110
LTZ Crew Cab 147"	5.3L V8	4WD	113	110
LTZ Crew Cab 157"	5.3L V8	4WD	113	110
RST Crew Cab 147"	2.7L	RWD	113	110
RST Crew Cab 147"	2.7L	4WD	113	110
RST Crew Cab 157"	2.7L	4WD	113	110
RST Double Cab 147"	2.7L	4WD	113	90
Work Crew Cab 147"	2.7L	RWD	113	110
Work Crew Cab 157"	2.7L	RWD	113	110
Work Double Cab 147"	2.7L	RWD	113	90
Work Reg Cab 126"	2.7L	RWD	113
Work Reg Cab 140"	2.7L	RWD	113
Work Crew Cab 147"	2.7L	4WD	113	110
Work Crew Cab 157"	2.7L	4WD	113	110
Work Double Cab 147"	2.7L	4WD	113	90
Work Reg Cab 126"	2.7L	4WD	113
Work Reg Cab 140"	2.7L	4WD	113
Custom Trail Boss Crew Cab 147"	2.7L	4WD	113	110
Custom Trail Boss Crew Cab 157"	2.7L	4WD	113	110
LT Trail Boss Crew Cab 147"	2.7L	4WD	113	110
LT Trail Boss Crew Cab 157"	2.7L	4WD	113	110
ZR2 Crew Cab 147"	3.0L I6	4WD	113	110