Specifications Comparison: 2018 GMC Sierra 2500 vs 2002 GMC Sierra 2500

Legroom

Trim	Eng.	Drive train	1st Row Legroom (in)	2nd Row Legroom (in)
HD 2500 Crew Cab	6.0L V8	RWD	45.3	40.9
HD 2500 Crew Cab	6.0L V8	4WD	45.3	40.9
HD 2500 Crew Cab Denali	6.0L V8	RWD	45.3	40.9
HD 2500 Crew Cab Denali	6.0L V8	4WD	45.3	40.9
HD 2500 Crew Cab SLE	6.0L V8	RWD	45.3	40.9
HD 2500 Crew Cab SLE	6.0L V8	4WD	45.3	40.9
HD 2500 Crew Cab SLT	6.0L V8	RWD	45.3	40.9
HD 2500 Crew Cab SLT	6.0L V8	4WD	45.3	40.9
HD 2500 Extended Cab	6.0L V8	RWD	45.3	34.6
HD 2500 Extended Cab	6.0L V8	4WD	45.3	34.6
HD 2500 Extended Cab SLE	6.0L V8	RWD	45.3	34.6
HD 2500 Extended Cab SLE	6.0L V8	4WD	45.3	34.6
HD 2500 Extended Cab SLT	6.0L V8	RWD	45.3	34.6
HD 2500 Extended Cab SLT	6.0L V8	4WD	45.3	34.6
HD 2500 Regular Cab	6.0L V8	RWD	45.3
HD 2500 Regular Cab	6.0L V8	4WD	45.3
HD 2500 Regular Cab SLE	6.0L V8	RWD	45.3
HD 2500 Regular Cab SLE	6.0L V8	4WD	45.3

Trim	Eng.	Drive train	1st Row Legroom (in)	2nd Row Legroom (in)
2500 Extended Cab SL	6.0L V8	4WD	41.3	33.7
2500 Extended Cab SLE	6.0L V8	4WD	41.3	33.7
2500 Extended Cab SLT	6.0L V8	4WD	41.3	33.7
2500 Regular Cab SL	6.0L V8	RWD	41.3
2500 Regular Cab SLE	6.0L V8	RWD	41.3
HD 2500 Crew Cab SL	6.0L V8	RWD	41.3	38.8
HD 2500 Crew Cab SL	6.0L V8	4WD	41.3	38.8
HD 2500 Crew Cab SLE	6.0L V8	RWD	41.3	38.8
HD 2500 Crew Cab SLE	6.0L V8	4WD	41.3	38.8
HD 2500 Crew Cab SLT	6.0L V8	RWD	41.3	38.8
HD 2500 Crew Cab SLT	6.0L V8	4WD	41.3	38.8
HD 2500 Extended Cab SL	6.0L V8	RWD	41.3	33.7
HD 2500 Extended Cab SL	6.0L V8	4WD	41.3	33.7
HD 2500 Extended Cab SLE	6.0L V8	RWD	41.3	33.7
HD 2500 Extended Cab SLE	6.0L V8	4WD	41.3	33.7
HD 2500 Extended Cab SLT	6.0L V8	RWD	41.3	33.7
HD 2500 Extended Cab SLT	6.0L V8	4WD	41.3	33.7
HD 2500 Regular Cab SL	6.0L V8	RWD	41.3
HD 2500 Regular Cab SL	6.0L V8	4WD	41.3
HD 2500 Regular Cab SLE	6.0L V8	RWD	41.3
HD 2500 Regular Cab SLE	6.0L V8	4WD	41.3

Trim	Eng.	Drive train	1st Row Legroom (cm)	2nd Row Legroom (cm)
HD 2500 Crew Cab	6.0L V8	RWD	115.1	103.9
HD 2500 Crew Cab	6.0L V8	4WD	115.1	103.9
HD 2500 Crew Cab Denali	6.0L V8	RWD	115.1	103.9
HD 2500 Crew Cab Denali	6.0L V8	4WD	115.1	103.9
HD 2500 Crew Cab SLE	6.0L V8	RWD	115.1	103.9
HD 2500 Crew Cab SLE	6.0L V8	4WD	115.1	103.9
HD 2500 Crew Cab SLT	6.0L V8	RWD	115.1	103.9
HD 2500 Crew Cab SLT	6.0L V8	4WD	115.1	103.9
HD 2500 Extended Cab	6.0L V8	RWD	115.1	87.9
HD 2500 Extended Cab	6.0L V8	4WD	115.1	87.9
HD 2500 Extended Cab SLE	6.0L V8	RWD	115.1	87.9
HD 2500 Extended Cab SLE	6.0L V8	4WD	115.1	87.9
HD 2500 Extended Cab SLT	6.0L V8	RWD	115.1	87.9
HD 2500 Extended Cab SLT	6.0L V8	4WD	115.1	87.9
HD 2500 Regular Cab	6.0L V8	RWD	115.1
HD 2500 Regular Cab	6.0L V8	4WD	115.1
HD 2500 Regular Cab SLE	6.0L V8	RWD	115.1
HD 2500 Regular Cab SLE	6.0L V8	4WD	115.1

Trim	Eng.	Drive train	1st Row Legroom (cm)	2nd Row Legroom (cm)
2500 Extended Cab SL	6.0L V8	4WD	104.9	85.6
2500 Extended Cab SLE	6.0L V8	4WD	104.9	85.6
2500 Extended Cab SLT	6.0L V8	4WD	104.9	85.6
2500 Regular Cab SL	6.0L V8	RWD	104.9
2500 Regular Cab SLE	6.0L V8	RWD	104.9
HD 2500 Crew Cab SL	6.0L V8	RWD	104.9	98.6
HD 2500 Crew Cab SL	6.0L V8	4WD	104.9	98.6
HD 2500 Crew Cab SLE	6.0L V8	RWD	104.9	98.6
HD 2500 Crew Cab SLE	6.0L V8	4WD	104.9	98.6
HD 2500 Crew Cab SLT	6.0L V8	RWD	104.9	98.6
HD 2500 Crew Cab SLT	6.0L V8	4WD	104.9	98.6
HD 2500 Extended Cab SL	6.0L V8	RWD	104.9	85.6
HD 2500 Extended Cab SL	6.0L V8	4WD	104.9	85.6
HD 2500 Extended Cab SLE	6.0L V8	RWD	104.9	85.6
HD 2500 Extended Cab SLE	6.0L V8	4WD	104.9	85.6
HD 2500 Extended Cab SLT	6.0L V8	RWD	104.9	85.6
HD 2500 Extended Cab SLT	6.0L V8	4WD	104.9	85.6
HD 2500 Regular Cab SL	6.0L V8	RWD	104.9
HD 2500 Regular Cab SL	6.0L V8	4WD	104.9
HD 2500 Regular Cab SLE	6.0L V8	RWD	104.9
HD 2500 Regular Cab SLE	6.0L V8	4WD	104.9