Specifications Comparison: 2006 GMC Sierra 3500 vs 2019 GMC Sierra 3500

Legroom

Trim	Eng.	Drive train	1st Row Legroom (in)	2nd Row Legroom (in)
3500 Crew Cab SL	V8	RWD	41.3	39.1
3500 Crew Cab SL	V8	4WD	41.3	39.1
3500 Crew Cab SLE	V8	RWD	41.3	39.1
3500 Crew Cab SLE	V8	4WD	41.3	39.1
3500 Crew Cab SLT	V8	RWD	41.3	39.1
3500 Crew Cab SLT	V8	4WD	41.3	39.1
3500 Extended Cab SL	V8	RWD	41.3	33.7
3500 Extended Cab SL	V8	4WD	41.3	33.7
3500 Extended Cab SLE	V8	RWD	41.3	33.7
3500 Extended Cab SLE	V8	4WD	41.3	33.7
3500 Extended Cab SLT	V8	RWD	41.3	33.7
3500 Extended Cab SLT	V8	4WD	41.3	33.7
3500 Regular Cab SL	V8	RWD	41.3
3500 Regular Cab SL	V8	4WD	41.3
3500 Regular Cab SLE	V8	RWD	41.3
3500 Regular Cab SLE	V8	4WD	41.3

Trim	Eng.	Drive train	1st Row Legroom (in)	2nd Row Legroom (in)
HD 3500 Crew Cab 153.7"	6.0L V8	RWD	45.3	40.9
HD 3500 Crew Cab 167.7"	6.0L V8	RWD	45.3	40.9
HD 3500 Crew Cab 153.7"	6.0L V8	4WD	45.3	40.9
HD 3500 Crew Cab 167.7"	6.0L V8	4WD	45.3	40.9
HD 3500 Crew Cab 153.7" Denali	6.0L V8	RWD	45.3	40.9
HD 3500 Crew Cab 167.7" Denali	6.0L V8	RWD	45.3	40.9
HD 3500 Crew Cab 153.7" Denali	6.0L V8	4WD	45.3	40.9
HD 3500 Crew Cab 167.7" Denali	6.0L V8	4WD	45.3	40.9
HD 3500 Crew Cab 153.7" SLE	6.0L V8	RWD	45.3	40.9
HD 3500 Crew Cab 167.7" SLE	6.0L V8	RWD	45.3	40.9
HD 3500 Crew Cab 153.7" SLE	6.0L V8	4WD	45.3	40.9
HD 3500 Crew Cab 167.7" SLE	6.0L V8	4WD	45.3	40.9
HD 3500 Crew Cab 153.7" SLT	6.0L V8	RWD	45.3	40.9
HD 3500 Crew Cab 167.7" SLT	6.0L V8	RWD	45.3	40.9
HD 3500 Crew Cab 153.7" SLT	6.0L V8	4WD	45.3	40.9
HD 3500 Crew Cab 167.7" SLT	6.0L V8	4WD	45.3	40.9
HD 3500 Crew Cab	6.0L V8	RWD	45.3	40.9
HD 3500 Crew Cab	6.0L V8	4WD	45.3	40.9
HD 3500 Crew Cab Denali	6.0L V8	RWD	45.3	40.9
HD 3500 Crew Cab Denali	6.0L V8	4WD	45.3	40.9
HD 3500 Crew Cab SLE	6.0L V8	RWD	45.3	40.9
HD 3500 Crew Cab SLE	6.0L V8	4WD	45.3	40.9
HD 3500 Crew Cab SLT	6.0L V8	RWD	45.3	40.9
HD 3500 Crew Cab SLT	6.0L V8	4WD	45.3	40.9

Trim	Eng.	Drive train	1st Row Legroom (cm)	2nd Row Legroom (cm)
3500 Crew Cab SL	V8	RWD	104.9	99.3
3500 Crew Cab SL	V8	4WD	104.9	99.3
3500 Crew Cab SLE	V8	RWD	104.9	99.3
3500 Crew Cab SLE	V8	4WD	104.9	99.3
3500 Crew Cab SLT	V8	RWD	104.9	99.3
3500 Crew Cab SLT	V8	4WD	104.9	99.3
3500 Extended Cab SL	V8	RWD	104.9	85.6
3500 Extended Cab SL	V8	4WD	104.9	85.6
3500 Extended Cab SLE	V8	RWD	104.9	85.6
3500 Extended Cab SLE	V8	4WD	104.9	85.6
3500 Extended Cab SLT	V8	RWD	104.9	85.6
3500 Extended Cab SLT	V8	4WD	104.9	85.6
3500 Regular Cab SL	V8	RWD	104.9
3500 Regular Cab SL	V8	4WD	104.9
3500 Regular Cab SLE	V8	RWD	104.9
3500 Regular Cab SLE	V8	4WD	104.9

Trim	Eng.	Drive train	1st Row Legroom (cm)	2nd Row Legroom (cm)
HD 3500 Crew Cab 153.7"	6.0L V8	RWD	115.1	103.9
HD 3500 Crew Cab 167.7"	6.0L V8	RWD	115.1	103.9
HD 3500 Crew Cab 153.7"	6.0L V8	4WD	115.1	103.9
HD 3500 Crew Cab 167.7"	6.0L V8	4WD	115.1	103.9
HD 3500 Crew Cab 153.7" Denali	6.0L V8	RWD	115.1	103.9
HD 3500 Crew Cab 167.7" Denali	6.0L V8	RWD	115.1	103.9
HD 3500 Crew Cab 153.7" Denali	6.0L V8	4WD	115.1	103.9
HD 3500 Crew Cab 167.7" Denali	6.0L V8	4WD	115.1	103.9
HD 3500 Crew Cab 153.7" SLE	6.0L V8	RWD	115.1	103.9
HD 3500 Crew Cab 167.7" SLE	6.0L V8	RWD	115.1	103.9
HD 3500 Crew Cab 153.7" SLE	6.0L V8	4WD	115.1	103.9
HD 3500 Crew Cab 167.7" SLE	6.0L V8	4WD	115.1	103.9
HD 3500 Crew Cab 153.7" SLT	6.0L V8	RWD	115.1	103.9
HD 3500 Crew Cab 167.7" SLT	6.0L V8	RWD	115.1	103.9
HD 3500 Crew Cab 153.7" SLT	6.0L V8	4WD	115.1	103.9
HD 3500 Crew Cab 167.7" SLT	6.0L V8	4WD	115.1	103.9
HD 3500 Crew Cab	6.0L V8	RWD	115.1	103.9
HD 3500 Crew Cab	6.0L V8	4WD	115.1	103.9
HD 3500 Crew Cab Denali	6.0L V8	RWD	115.1	103.9
HD 3500 Crew Cab Denali	6.0L V8	4WD	115.1	103.9
HD 3500 Crew Cab SLE	6.0L V8	RWD	115.1	103.9
HD 3500 Crew Cab SLE	6.0L V8	4WD	115.1	103.9
HD 3500 Crew Cab SLT	6.0L V8	RWD	115.1	103.9
HD 3500 Crew Cab SLT	6.0L V8	4WD	115.1	103.9