Specifications Comparison: 2021 GMC Sierra 3500 vs 2024 Dodge Ram 3500

Legroom

Trim	Eng.	Drive train	1st Row Legroom (in)	2nd Row Legroom (in)
HD Crew Cab	6.6L V8	RWD	44	43
HD Crew Cab	6.6L V8	RWD	44	43
HD Crew Cab	6.6L V8	4WD	44	43
HD Crew Cab	6.6L V8	4WD	44	43
HD Crew Cab AT4	6.6L V8	4WD	44	43
HD Crew Cab AT4	6.6L V8	4WD	44	43
HD Crew Cab Denali	6.6L V8	4WD	44	43
HD Crew Cab Denali	6.6L V8	4WD	44	43
HD Crew Cab SLE	6.6L V8	RWD	44	43
HD Crew Cab SLE	6.6L V8	RWD	44	43
HD Crew Cab SLE	6.6L V8	4WD	44	43
HD Crew Cab SLE	6.6L V8	4WD	44	43
HD Crew Cab SLT	6.6L V8	RWD	44	43
HD Crew Cab SLT	6.6L V8	RWD	44	43
HD Crew Cab SLT	6.6L V8	4WD	44	43
HD Crew Cab SLT	6.6L V8	4WD	44	43
HD Extended Cab	6.6L V8	RWD	44	35
HD Extended Cab	6.6L V8	RWD	44	35
HD Extended Cab	6.6L V8	4WD	44	35
HD Extended Cab	6.6L V8	4WD	44	35
HD Extended Cab SLE	6.6L V8	RWD	44	35
HD Extended Cab SLE	6.6L V8	RWD	44	35
HD Extended Cab SLE	6.6L V8	4WD	44	35
HD Extended Cab SLE	6.6L V8	4WD	44	35
HD Regular Cab	6.6L V8	RWD	44
HD Regular Cab	6.6L V8	RWD	44
HD Regular Cab	6.6L V8	4WD	44
HD Regular Cab	6.6L V8	4WD	44
HD Regular Cab SLE	6.6L V8	RWD	44
HD Regular Cab SLE	6.6L V8	RWD	44
HD Regular Cab SLE	6.6L V8	4WD	44
HD Regular Cab SLE	6.6L V8	4WD	44

Trim	Eng.	Drive train	1st Row Legroom (in)	2nd Row Legroom (in)
Big Horn Crew Cab 6'4" Box	6.4L V8	RWD	40.9	40.2
Big Horn Crew Cab 8' Box	6.4L V8	None	40.9	40.2
Big Horn Reg Cab 8' Box	6.7L I6	RWD	40.9
Big Horn Crew Cab 6'4" Box	6.4L V8	4WD	40.9	40.2
Big Horn Crew Cab 8' Box	6.4L V8	4WD	40.9	40.2
Big Horn Reg Cab 8' Box	6.4L V8	None	40.9
Laramie Crew Cab 6'4" Box	6.7L I6	RWD	40.9	40.2
Laramie Crew Cab 8' Box	6.4L V8	RWD	40.9	40.2
Laramie Crew Cab 6'4" Box	6.7L I6	4WD	40.9	40.2
Laramie Crew Cab 8' Box	6.7L I6	4WD	40.9	40.2
Laramie Mega Cab 6'4" Box	6.7L I6	4WD	40.9	43.1
Limited Crew Cab 6'4" Box	6.7L I6	4WD	40.9	40.2
Limited Crew Cab 8' Box	6.7L I6	4WD	40.9	40.2
Limited Mega Cab 6'4" Box	6.7L I6	4WD	40.9	43.1
Lone Star Crew Cab 6'4" Box	6.4L V8	RWD	40.9	40.2
Lone Star Crew Cab 8' Box	6.4L V8	RWD	40.9	40.2
Lone Star Reg Cab 8' Box	6.7L I6	RWD	40.9
Lone Star Crew Cab 6'4" Box	6.4L V8	4WD	40.9	40.2
Lone Star Crew Cab 8' Box	6.4L V8	4WD	40.9	40.2
Lone Star Reg Cab 8' Box	6.4L V8	4WD	40.9
Longhorn Crew Cab 6'4" Box	6.7L I6	4WD	40.9	40.2
Longhorn Crew Cab 8' Box	6.7L I6	4WD	40.9	40.2
Longhorn Mega Cab 6'4" Box	6.7L I6	4WD	40.9	43.1
Tradesman Crew Cab 6'4" Box	6.4L V8	RWD	40.9	40.2
Tradesman Crew Cab 8' Box	6.4L V8	RWD	40.9	40.2
Tradesman Reg Cab 8' Box	6.4L V8	RWD	40.9
Tradesman Crew Cab 6'4" Box	6.4L V8	4WD	40.9	40.2
Tradesman Crew Cab 8' Box	6.4L V8	4WD	40.9	40.2
Tradesman Reg Cab 8' Box	6.4L V8	4WD	40.9

Trim	Eng.	Drive train	1st Row Legroom (cm)	2nd Row Legroom (cm)
HD Crew Cab	6.6L V8	RWD	111	109
HD Crew Cab	6.6L V8	RWD	111	109
HD Crew Cab	6.6L V8	4WD	111	109
HD Crew Cab	6.6L V8	4WD	111	109
HD Crew Cab AT4	6.6L V8	4WD	111	109
HD Crew Cab AT4	6.6L V8	4WD	111	109
HD Crew Cab Denali	6.6L V8	4WD	111	109
HD Crew Cab Denali	6.6L V8	4WD	111	109
HD Crew Cab SLE	6.6L V8	RWD	111	109
HD Crew Cab SLE	6.6L V8	RWD	111	109
HD Crew Cab SLE	6.6L V8	4WD	111	109
HD Crew Cab SLE	6.6L V8	4WD	111	109
HD Crew Cab SLT	6.6L V8	RWD	111	109
HD Crew Cab SLT	6.6L V8	RWD	111	109
HD Crew Cab SLT	6.6L V8	4WD	111	109
HD Crew Cab SLT	6.6L V8	4WD	111	109
HD Extended Cab	6.6L V8	RWD	111	88
HD Extended Cab	6.6L V8	RWD	111	88
HD Extended Cab	6.6L V8	4WD	111	88
HD Extended Cab	6.6L V8	4WD	111	88
HD Extended Cab SLE	6.6L V8	RWD	111	88
HD Extended Cab SLE	6.6L V8	RWD	111	88
HD Extended Cab SLE	6.6L V8	4WD	111	88
HD Extended Cab SLE	6.6L V8	4WD	111	88
HD Regular Cab	6.6L V8	RWD	111
HD Regular Cab	6.6L V8	RWD	111
HD Regular Cab	6.6L V8	4WD	111
HD Regular Cab	6.6L V8	4WD	111
HD Regular Cab SLE	6.6L V8	RWD	111
HD Regular Cab SLE	6.6L V8	RWD	111
HD Regular Cab SLE	6.6L V8	4WD	111
HD Regular Cab SLE	6.6L V8	4WD	111

Trim	Eng.	Drive train	1st Row Legroom (cm)	2nd Row Legroom (cm)
Big Horn Crew Cab 6'4" Box	6.4L V8	RWD	104	102
Big Horn Crew Cab 8' Box	6.4L V8	None	104	102
Big Horn Reg Cab 8' Box	6.7L I6	RWD	104
Big Horn Crew Cab 6'4" Box	6.4L V8	4WD	104	102
Big Horn Crew Cab 8' Box	6.4L V8	4WD	104	102
Big Horn Reg Cab 8' Box	6.4L V8	None	104
Laramie Crew Cab 6'4" Box	6.7L I6	RWD	104	102
Laramie Crew Cab 8' Box	6.4L V8	RWD	104	102
Laramie Crew Cab 6'4" Box	6.7L I6	4WD	104	102
Laramie Crew Cab 8' Box	6.7L I6	4WD	104	102
Laramie Mega Cab 6'4" Box	6.7L I6	4WD	104	109
Limited Crew Cab 6'4" Box	6.7L I6	4WD	104	102
Limited Crew Cab 8' Box	6.7L I6	4WD	104	102
Limited Mega Cab 6'4" Box	6.7L I6	4WD	104	109
Lone Star Crew Cab 6'4" Box	6.4L V8	RWD	104	102
Lone Star Crew Cab 8' Box	6.4L V8	RWD	104	102
Lone Star Reg Cab 8' Box	6.7L I6	RWD	104
Lone Star Crew Cab 6'4" Box	6.4L V8	4WD	104	102
Lone Star Crew Cab 8' Box	6.4L V8	4WD	104	102
Lone Star Reg Cab 8' Box	6.4L V8	4WD	104
Longhorn Crew Cab 6'4" Box	6.7L I6	4WD	104	102
Longhorn Crew Cab 8' Box	6.7L I6	4WD	104	102
Longhorn Mega Cab 6'4" Box	6.7L I6	4WD	104	109
Tradesman Crew Cab 6'4" Box	6.4L V8	RWD	104	102
Tradesman Crew Cab 8' Box	6.4L V8	RWD	104	102
Tradesman Reg Cab 8' Box	6.4L V8	RWD	104
Tradesman Crew Cab 6'4" Box	6.4L V8	4WD	104	102
Tradesman Crew Cab 8' Box	6.4L V8	4WD	104	102
Tradesman Reg Cab 8' Box	6.4L V8	4WD	104