Specifications Comparison: 2005 GMC Sierra 3500 vs 2020 GMC Sierra 3500

Headroom

2005 GMC Sierra 3500

Headroom (Imp.)

Trim	Eng.	Drive train	1st Row Headroom (in)	2nd Row Headroom (in)
3500 Crew Cab	V8	RWD	41	39
3500 Crew Cab	V8	4WD	41	39
3500 Crew Cab SLE	V8	RWD	41	39
3500 Crew Cab SLE	V8	4WD	41	39
3500 Crew Cab SLT	V8	RWD	41	39
3500 Crew Cab SLT	V8	4WD	41	39
3500 Extended Cab	V8	RWD	41	38.4
3500 Extended Cab	V8	4WD	41	38.4
3500 Extended Cab SLE	V8	RWD	41	38.4
3500 Extended Cab SLE	V8	4WD	41	38.4
3500 Extended Cab SLT	V8	RWD	41	38.4
3500 Extended Cab SLT	V8	4WD	41	38.4
3500 Regular Cab	V8	4WD	41
3500 Regular Cab SLE	V8	4WD	41

2020 GMC Sierra 3500

Headroom (Imp.)

Trim	Eng.	Drive train	1st Row Headroom (in)	2nd Row Headroom (in)
HD 3500 Crew Cab 159" AT4	6.6L V8	4WD	43	40.1
HD 3500 Crew Cab 172" AT4	6.6L V8	4WD	43	40.1
HD 3500 Crew Cab 159"	6.6L V8	RWD	43	40.1
HD 3500 Crew Cab 172"	6.6L V8	RWD	43	40.1
HD 3500 Double Cab 162"	6.6L V8	RWD	43	39.9
HD 3500 Reg Cab 142"	6.6L V8	RWD	43.1
HD 3500 Crew Cab 159"	6.6L V8	4WD	43	40.1
HD 3500 Crew Cab 172"	6.6L V8	4WD	43	40.1
HD 3500 Double Cab 162"	6.6L V8	4WD	43	39.9
HD 3500 Reg Cab 142"	6.6L V8	4WD	43.1
HD 3500 Crew Cab 159" Denali	6.6L V8	4WD	43	40.1
HD 3500 Crew Cab 172" Denali	6.6L V8	4WD	43	40.1
HD 3500 Crew Cab 159" SLE	6.6L V8	RWD	43	40.1
HD 3500 Crew Cab 172" SLE	6.6L V8	RWD	43	40.1
HD 3500 Double Cab 162" SLE	6.6L V8	RWD	43	39.9
HD 3500 Reg Cab 142" SLE	6.6L V8	RWD	43.1
HD 3500 Crew Cab 159" SLE	6.6L V8	4WD	43	40.1
HD 3500 Crew Cab 172" SLE	6.6L V8	4WD	43	40.1
HD 3500 Double Cab 162" SLE	6.6L V8	4WD	43	39.9
HD 3500 Reg Cab 142" SLE	6.6L V8	4WD	43.1
HD 3500 Crew Cab 159" SLT	6.6L V8	RWD	43	40.1
HD 3500 Crew Cab 172" SLT	6.6L V8	RWD	43	40.1
HD 3500 Crew Cab 159" SLT	6.6L V8	4WD	43	40.1
HD 3500 Crew Cab 172" SLT	6.6L V8	4WD	43	40.1
HD 3500 Crew Cab	6.6L V8	RWD	43	40.1
HD 3500 Crew Cab	6.6L V8	4WD	43	40.1
HD 3500 Crew Cab AT4	6.6L V8	4WD	43	40.1
HD 3500 Crew Cab Denali	6.6L V8	4WD	43	40.1
HD 3500 Crew Cab SLE	6.6L V8	RWD	43	40.1
HD 3500 Crew Cab SLE	6.6L V8	4WD	43	40.1
HD 3500 Crew Cab SLT	6.6L V8	RWD	43	40.1
HD 3500 Crew Cab SLT	6.6L V8	4WD	43	40.1
HD 3500 Extended Cab	6.6L V8	RWD	43	39.9
HD 3500 Extended Cab	6.6L V8	4WD	43	39.9
HD 3500 Extended Cab SLE	6.6L V8	RWD	43	39.9
HD 3500 Extended Cab SLE	6.6L V8	4WD	43	39.9
HD 3500 Regular Cab	6.6L V8	RWD	43.1
HD 3500 Regular Cab	6.6L V8	4WD	43.1
HD 3500 Regular Cab SLE	6.6L V8	RWD	43.1
HD 3500 Regular Cab SLE	6.6L V8	4WD	43.1

2005 GMC Sierra 3500

Headroom (Metric)

Trim	Eng.	Drive train	1st Row Headroom (cm)	2nd Row Headroom (cm)
3500 Crew Cab	V8	RWD	104.1	99.1
3500 Crew Cab	V8	4WD	104.1	99.1
3500 Crew Cab SLE	V8	RWD	104.1	99.1
3500 Crew Cab SLE	V8	4WD	104.1	99.1
3500 Crew Cab SLT	V8	RWD	104.1	99.1
3500 Crew Cab SLT	V8	4WD	104.1	99.1
3500 Extended Cab	V8	RWD	104.1	97.5
3500 Extended Cab	V8	4WD	104.1	97.5
3500 Extended Cab SLE	V8	RWD	104.1	97.5
3500 Extended Cab SLE	V8	4WD	104.1	97.5
3500 Extended Cab SLT	V8	RWD	104.1	97.5
3500 Extended Cab SLT	V8	4WD	104.1	97.5
3500 Regular Cab	V8	4WD	104.1
3500 Regular Cab SLE	V8	4WD	104.1

2005 GMC Sierra 3500

Headroom (Metric)

Trim	Eng.	Drive train	1st Row Headroom (cm)	2nd Row Headroom (cm)
HD 3500 Crew Cab 159" AT4	6.6L V8	4WD	109.2	101.9
HD 3500 Crew Cab 172" AT4	6.6L V8	4WD	109.2	101.9
HD 3500 Crew Cab 159"	6.6L V8	RWD	109.2	101.9
HD 3500 Crew Cab 172"	6.6L V8	RWD	109.2	101.9
HD 3500 Double Cab 162"	6.6L V8	RWD	109.2	101.3
HD 3500 Reg Cab 142"	6.6L V8	RWD	109.5
HD 3500 Crew Cab 159"	6.6L V8	4WD	109.2	101.9
HD 3500 Crew Cab 172"	6.6L V8	4WD	109.2	101.9
HD 3500 Double Cab 162"	6.6L V8	4WD	109.2	101.3
HD 3500 Reg Cab 142"	6.6L V8	4WD	109.5
HD 3500 Crew Cab 159" Denali	6.6L V8	4WD	109.2	101.9
HD 3500 Crew Cab 172" Denali	6.6L V8	4WD	109.2	101.9
HD 3500 Crew Cab 159" SLE	6.6L V8	RWD	109.2	101.9
HD 3500 Crew Cab 172" SLE	6.6L V8	RWD	109.2	101.9
HD 3500 Double Cab 162" SLE	6.6L V8	RWD	109.2	101.3
HD 3500 Reg Cab 142" SLE	6.6L V8	RWD	109.5
HD 3500 Crew Cab 159" SLE	6.6L V8	4WD	109.2	101.9
HD 3500 Crew Cab 172" SLE	6.6L V8	4WD	109.2	101.9
HD 3500 Double Cab 162" SLE	6.6L V8	4WD	109.2	101.3
HD 3500 Reg Cab 142" SLE	6.6L V8	4WD	109.5
HD 3500 Crew Cab 159" SLT	6.6L V8	RWD	109.2	101.9
HD 3500 Crew Cab 172" SLT	6.6L V8	RWD	109.2	101.9
HD 3500 Crew Cab 159" SLT	6.6L V8	4WD	109.2	101.9
HD 3500 Crew Cab 172" SLT	6.6L V8	4WD	109.2	101.9
HD 3500 Crew Cab	6.6L V8	RWD	109.2	101.9
HD 3500 Crew Cab	6.6L V8	4WD	109.2	101.9
HD 3500 Crew Cab AT4	6.6L V8	4WD	109.2	101.9
HD 3500 Crew Cab Denali	6.6L V8	4WD	109.2	101.9
HD 3500 Crew Cab SLE	6.6L V8	RWD	109.2	101.9
HD 3500 Crew Cab SLE	6.6L V8	4WD	109.2	101.9
HD 3500 Crew Cab SLT	6.6L V8	RWD	109.2	101.9
HD 3500 Crew Cab SLT	6.6L V8	4WD	109.2	101.9
HD 3500 Extended Cab	6.6L V8	RWD	109.2	101.3
HD 3500 Extended Cab	6.6L V8	4WD	109.2	101.3
HD 3500 Extended Cab SLE	6.6L V8	RWD	109.2	101.3
HD 3500 Extended Cab SLE	6.6L V8	4WD	109.2	101.3
HD 3500 Regular Cab	6.6L V8	RWD	109.5
HD 3500 Regular Cab	6.6L V8	4WD	109.5
HD 3500 Regular Cab SLE	6.6L V8	RWD	109.5
HD 3500 Regular Cab SLE	6.6L V8	4WD	109.5