Specifications Comparison: 2005 GMC Sierra 2500 vs 2024 GMC Sierra 2500

Headroom

Trim	Eng.	Drive train	1st Row Headroom (in)	2nd Row Headroom (in)
HD 2500 Crew Cab	V8	RWD	41	39
HD 2500 Crew Cab	V8	4WD	41	39
HD 2500 Crew Cab SLE	V8	RWD	41	39
HD 2500 Crew Cab SLE	V8	4WD	41	39
HD 2500 Crew Cab SLT	V8	RWD	41	39
HD 2500 Crew Cab SLT	V8	4WD	41	39
HD 2500 Extended Cab	V8	RWD	41	38.4
HD 2500 Extended Cab	V8	4WD	41	38.4
HD 2500 Extended Cab SLE	V8	RWD	41	38.4
HD 2500 Extended Cab SLE	V8	4WD	41	38.4
HD 2500 Extended Cab SLT	V8	RWD	41	38.4
HD 2500 Extended Cab SLT	V8	4WD	41	38.4
HD 2500 Regular Cab	V8	RWD	41
HD 2500 Regular Cab	V8	4WD	41
HD 2500 Regular Cab SLE	V8	RWD	41
HD 2500 Regular Cab SLE	V8	4WD	41

Trim	Eng.	Drive train	1st Row Headroom (in)	2nd Row Headroom (in)
HD Pro Crew Cab 159"	6.6L V8	RWD	43.03	40.12
HD Pro Crew Cab 172"	6.6L V8	RWD	43.03	40.12
HD Pro Double Cab 149"	6.6L V8	RWD	43.03	39.88
HD Pro Double Cab 162"	6.6L V8	RWD	43.03	39.88
HD Pro Reg Cab 142"	6.6L V8	RWD	43.11
HD Pro Crew Cab 159"	6.6L V8	4WD	43.03	40.12
HD Pro Crew Cab 172"	6.6L V8	4WD	43.03	40.12
HD Pro Double Cab 149"	6.6L V8	4WD	43.03	39.88
HD Pro Double Cab 162"	6.6L V8	4WD	43.03	39.88
HD Pro Reg Cab 142"	6.6L V8	4WD	43.11
HD SLE Crew Cab 159"	6.6L V8	RWD	43.03	40.12
HD SLE Crew Cab 172"	6.6L V8	RWD	43.03	40.12
HD SLE Double Cab 149"	6.6L V8	RWD	43.03	39.88
HD SLE Double Cab 162"	6.6L V8	RWD	43.03	39.88
HD SLE Reg Cab 142"	6.6L V8	RWD	43.11
HD SLE Crew Cab 159"	6.6L V8	4WD	43.03	40.12
HD SLE Crew Cab 172"	6.6L V8	4WD	43.03	40.12
HD SLE Double Cab 149"	6.6L V8	4WD	43.03	39.88
HD SLE Double Cab 162"	6.6L V8	4WD	43.03	39.88
HD SLE Reg Cab 142"	6.6L V8	4WD	43.11
HD SLT Crew Cab 159"	6.6L V8	RWD	43.03	40.12
HD SLT Crew Cab 172"	6.6L V8	RWD	43.03	40.12
HD SLT Crew Cab 159"	6.6L V8	4WD	43.03	40.12
HD SLT Crew Cab 172"	6.6L V8	4WD	43.03	40.12
HD AT4 Crew Cab 159"	6.6L V8	4WD	43.03	40.12
HD AT4 Crew Cab 172"	6.6L V8	4WD	43.03	40.12
HD AT4X Crew Cab 159"	6.6L V8	4WD	43.03	40.12
HD Denali Crew Cab 159"	6.6L V8	4WD	43.03	40.12
HD Denali Crew Cab 172"	6.6L V8	4WD	43.03	40.12
HD Denali Ultimate Crew Cab 159"	6.6L V8	4WD	43.03	40.12
HD Denali Ultimate Crew Cab 172"	6.6L V8	4WD	43.03	40.12

Trim	Eng.	Drive train	1st Row Headroom (cm)	2nd Row Headroom (cm)
HD 2500 Crew Cab	V8	RWD	104.1	99.1
HD 2500 Crew Cab	V8	4WD	104.1	99.1
HD 2500 Crew Cab SLE	V8	RWD	104.1	99.1
HD 2500 Crew Cab SLE	V8	4WD	104.1	99.1
HD 2500 Crew Cab SLT	V8	RWD	104.1	99.1
HD 2500 Crew Cab SLT	V8	4WD	104.1	99.1
HD 2500 Extended Cab	V8	RWD	104.1	97.5
HD 2500 Extended Cab	V8	4WD	104.1	97.5
HD 2500 Extended Cab SLE	V8	RWD	104.1	97.5
HD 2500 Extended Cab SLE	V8	4WD	104.1	97.5
HD 2500 Extended Cab SLT	V8	RWD	104.1	97.5
HD 2500 Extended Cab SLT	V8	4WD	104.1	97.5
HD 2500 Regular Cab	V8	RWD	104.1
HD 2500 Regular Cab	V8	4WD	104.1
HD 2500 Regular Cab SLE	V8	RWD	104.1
HD 2500 Regular Cab SLE	V8	4WD	104.1

Trim	Eng.	Drive train	1st Row Headroom (cm)	2nd Row Headroom (cm)
HD Pro Crew Cab 159"	6.6L V8	RWD	109	102
HD Pro Crew Cab 172"	6.6L V8	RWD	109	102
HD Pro Double Cab 149"	6.6L V8	RWD	109	101
HD Pro Double Cab 162"	6.6L V8	RWD	109	101
HD Pro Reg Cab 142"	6.6L V8	RWD	109
HD Pro Crew Cab 159"	6.6L V8	4WD	109	102
HD Pro Crew Cab 172"	6.6L V8	4WD	109	102
HD Pro Double Cab 149"	6.6L V8	4WD	109	101
HD Pro Double Cab 162"	6.6L V8	4WD	109	101
HD Pro Reg Cab 142"	6.6L V8	4WD	109
HD SLE Crew Cab 159"	6.6L V8	RWD	109	102
HD SLE Crew Cab 172"	6.6L V8	RWD	109	102
HD SLE Double Cab 149"	6.6L V8	RWD	109	101
HD SLE Double Cab 162"	6.6L V8	RWD	109	101
HD SLE Reg Cab 142"	6.6L V8	RWD	109
HD SLE Crew Cab 159"	6.6L V8	4WD	109	102
HD SLE Crew Cab 172"	6.6L V8	4WD	109	102
HD SLE Double Cab 149"	6.6L V8	4WD	109	101
HD SLE Double Cab 162"	6.6L V8	4WD	109	101
HD SLE Reg Cab 142"	6.6L V8	4WD	109
HD SLT Crew Cab 159"	6.6L V8	RWD	109	102
HD SLT Crew Cab 172"	6.6L V8	RWD	109	102
HD SLT Crew Cab 159"	6.6L V8	4WD	109	102
HD SLT Crew Cab 172"	6.6L V8	4WD	109	102
HD AT4 Crew Cab 159"	6.6L V8	4WD	109	102
HD AT4 Crew Cab 172"	6.6L V8	4WD	109	102
HD AT4X Crew Cab 159"	6.6L V8	4WD	109	102
HD Denali Crew Cab 159"	6.6L V8	4WD	109	102
HD Denali Crew Cab 172"	6.6L V8	4WD	109	102
HD Denali Ultimate Crew Cab 159"	6.6L V8	4WD	109	102
HD Denali Ultimate Crew Cab 172"	6.6L V8	4WD	109	102