Specifications Comparison: 2007 GMC Sierra 2500 vs 2013 GMC Sierra 2500

Headroom

Trim	Eng.	Drive train	1st Row Headroom (in)	2nd Row Headroom (in)
HD 2500 Crew Cab SLE	6.0L V8	RWD	41.3	40.6
HD 2500 Crew Cab SLE	6.0L V8	4WD	41.3	40.6
HD 2500 Crew Cab SLT	6.0L V8	RWD	41.3	40.6
HD 2500 Crew Cab SLT	6.0L V8	4WD	41.3	40.6
HD 2500 Extended Cab SLE	6.0L V8	RWD	41.3	39.3
HD 2500 Extended Cab SLE	6.0L V8	4WD	41.3	39.3
HD 2500 Extended Cab SLT	6.0L V8	RWD	41.3	39.3
HD 2500 Extended Cab SLT	6.0L V8	4WD	41.3	39.3
HD 2500 Regular Cab SLE	6.0L V8	RWD	41.4
HD 2500 Regular Cab SLE	6.0L V8	4WD	41.4
HD Classic 2500 Crew Cab SL	6.0L V8	RWD	41	39
HD Classic 2500 Crew Cab SL	6.0L V8	4WD	41	39
HD Classic 2500 Crew Cab SLE	6.0L V8	RWD	41	39
HD Classic 2500 Crew Cab SLE	6.0L V8	4WD	41	39
HD Classic 2500 Crew Cab SLT	6.0L V8	RWD	41	39
HD Classic 2500 Crew Cab SLT	6.0L V8	4WD	41	39
HD Classic 2500 Extended Cab SL	6.0L V8	RWD	41	38.4
HD Classic 2500 Extended Cab SL	6.0L V8	4WD	41	38.4
HD Classic 2500 Extended Cab SLE	6.0L V8	RWD	41	38.4
HD Classic 2500 Extended Cab SLE	6.0L V8	4WD	41	38.4
HD Classic 2500 Extended Cab SLT	6.0L V8	RWD	41	38.4
HD Classic 2500 Extended Cab SLT	6.0L V8	4WD	41	38.4
HD Classic 2500 Regular Cab SL	6.0L V8	RWD	41
HD Classic 2500 Regular Cab SL	6.0L V8	4WD	41
HD Classic 2500 Regular Cab SLE	6.0L V8	RWD	41
HD Classic 2500 Regular Cab SLE	6.0L V8	4WD	41

Trim	Eng.	Drive train	1st Row Headroom (in)	2nd Row Headroom (in)
HD 2500 Crew Cab Denali	6.0L V8	RWD	41.3	40.6
HD 2500 Crew Cab Denali	6.0L V8	4WD	41.3	40.6
HD 2500 Crew Cab SLE	6.0L V8	RWD	41.1	39.5
HD 2500 Crew Cab SLE	6.0L V8	4WD	41.1	39.5
HD 2500 Crew Cab SLT	6.0L V8	RWD	41.3	40.6
HD 2500 Crew Cab SLT	6.0L V8	4WD	41.3	40.6
HD 2500 Extended Cab SLE	6.0L V8	RWD	41.1	39.5
HD 2500 Extended Cab SLE	6.0L V8	4WD	41.1	39.5
HD 2500 Extended Cab SLT	6.0L V8	RWD	41.1	39.5
HD 2500 Extended Cab SLT	6.0L V8	4WD	41.1	39.5
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 Headroom (cm)	2nd Row Headroom (cm)
HD 2500 Crew Cab SLE	6.0L V8	RWD	104.9	103.1
HD 2500 Crew Cab SLE	6.0L V8	4WD	104.9	103.1
HD 2500 Crew Cab SLT	6.0L V8	RWD	104.9	103.1
HD 2500 Crew Cab SLT	6.0L V8	4WD	104.9	103.1
HD 2500 Extended Cab SLE	6.0L V8	RWD	104.9	99.8
HD 2500 Extended Cab SLE	6.0L V8	4WD	104.9	99.8
HD 2500 Extended Cab SLT	6.0L V8	RWD	104.9	99.8
HD 2500 Extended Cab SLT	6.0L V8	4WD	104.9	99.8
HD 2500 Regular Cab SLE	6.0L V8	RWD	105.2
HD 2500 Regular Cab SLE	6.0L V8	4WD	105.2
HD Classic 2500 Crew Cab SL	6.0L V8	RWD	104.1	99.1
HD Classic 2500 Crew Cab SL	6.0L V8	4WD	104.1	99.1
HD Classic 2500 Crew Cab SLE	6.0L V8	RWD	104.1	99.1
HD Classic 2500 Crew Cab SLE	6.0L V8	4WD	104.1	99.1
HD Classic 2500 Crew Cab SLT	6.0L V8	RWD	104.1	99.1
HD Classic 2500 Crew Cab SLT	6.0L V8	4WD	104.1	99.1
HD Classic 2500 Extended Cab SL	6.0L V8	RWD	104.1	97.5
HD Classic 2500 Extended Cab SL	6.0L V8	4WD	104.1	97.5
HD Classic 2500 Extended Cab SLE	6.0L V8	RWD	104.1	97.5
HD Classic 2500 Extended Cab SLE	6.0L V8	4WD	104.1	97.5
HD Classic 2500 Extended Cab SLT	6.0L V8	RWD	104.1	97.5
HD Classic 2500 Extended Cab SLT	6.0L V8	4WD	104.1	97.5
HD Classic 2500 Regular Cab SL	6.0L V8	RWD	104.1
HD Classic 2500 Regular Cab SL	6.0L V8	4WD	104.1
HD Classic 2500 Regular Cab SLE	6.0L V8	RWD	104.1
HD Classic 2500 Regular Cab SLE	6.0L V8	4WD	104.1

Trim	Eng.	Drive train	1st Row Headroom (cm)	2nd Row Headroom (cm)
HD 2500 Crew Cab Denali	6.0L V8	RWD	104.9	103.1
HD 2500 Crew Cab Denali	6.0L V8	4WD	104.9	103.1
HD 2500 Crew Cab SLE	6.0L V8	RWD	104.4	100.3
HD 2500 Crew Cab SLE	6.0L V8	4WD	104.4	100.3
HD 2500 Crew Cab SLT	6.0L V8	RWD	104.9	103.1
HD 2500 Crew Cab SLT	6.0L V8	4WD	104.9	103.1
HD 2500 Extended Cab SLE	6.0L V8	RWD	104.4	100.3
HD 2500 Extended Cab SLE	6.0L V8	4WD	104.4	100.3
HD 2500 Extended Cab SLT	6.0L V8	RWD	104.4	100.3
HD 2500 Extended Cab SLT	6.0L V8	4WD	104.4	100.3
HD 2500 Regular Cab SLE	6.0L V8	RWD	104.9
HD 2500 Regular Cab SLE	6.0L V8	4WD	104.9