Specifications Comparison: 2020 GMC Sierra 1500 vs 2002 GMC Sierra 1500

Headroom

2020 GMC Sierra 1500

Headroom (Imp.)

Trim	Eng.	Drive train	1st Row Headroom (in)	2nd Row Headroom (in)
1500 Crew Cab 147" AT4	5.3L V8	4WD	43	40.1
1500 Crew Cab 157" AT4	5.3L V8	4WD	43	40.1
1500 Double Cab 147" AT4	5.3L V8	4WD	43	39.9
1500 Crew Cab 147"	4.3L V6	RWD	43	40.1
1500 Crew Cab 157"	4.3L V6	RWD	43	40.1
1500 Double Cab 147"	4.3L V6	RWD	43	39.9
1500 Reg Cab 140"	4.3L V6	RWD	43.1
1500 Crew Cab 147"	4.3L V6	4WD	43	40.1
1500 Crew Cab 157"	4.3L V6	4WD	43	40.1
1500 Double Cab 147"	4.3L V6	4WD	43	39.9
1500 Reg Cab 140"	4.3L V6	4WD	43.1
1500 Crew Cab 147" Denali	5.3L V8	RWD	43	40.1
1500 Crew Cab 157" Denali	5.3L V8	RWD	43	40.1
1500 Crew Cab 147" Denali	5.3L V8	4WD	43	40.1
1500 Crew Cab 157" Denali	5.3L V8	4WD	43	40.1
1500 Crew Cab 147" Elevation	2.7L	RWD	43	40.1
1500 Crew Cab 157" Elevation	2.7L	RWD	43	40.1
1500 Double Cab 147" Elevation	2.7L	RWD	43	39.9
1500 Crew Cab 147" Elevation	2.7L	4WD	43	40.1
1500 Crew Cab 157" Elevation	2.7L	4WD	43	40.1
1500 Double Cab 147" Elevation	2.7L	4WD	43	39.9
1500 Crew Cab 147" SLE	2.7L	RWD	43	40.1
1500 Crew Cab 157" SLE	2.7L	RWD	43	40.1
1500 Double Cab 147" SLE	2.7L	RWD	43	39.9
1500 Crew Cab 147" SLE	2.7L	4WD	43	40.1
1500 Crew Cab 157" SLE	2.7L	4WD	43	40.1
1500 Double Cab 147" SLE	2.7L	4WD	43	39.9
1500 Crew Cab 147" SLT	5.3L V8	RWD	43	40.1
1500 Crew Cab 157" SLT	5.3L V8	RWD	43	40.1
1500 Double Cab 147" SLT	5.3L V8	RWD	43	39.9
1500 Crew Cab 147" SLT	5.3L V8	4WD	43	40.1
1500 Crew Cab 157" SLT	5.3L V8	4WD	43	40.1
1500 Double Cab 147" SLT	5.3L V8	4WD	43	39.9
1500 Crew Cab	4.3L V6	RWD	43	40.1
1500 Crew Cab	4.3L V6	4WD	43	40.1
1500 Crew Cab AT4	5.3L V8	4WD	43	40.1
1500 Crew Cab Denali	5.3L V8	RWD	43	40.1
1500 Crew Cab Denali	5.3L V8	4WD	43	40.1
1500 Crew Cab Elevation	2.7L	RWD	43	40.1
1500 Crew Cab Elevation	2.7L	4WD	43	40.1
1500 Crew Cab SLE	2.7L	RWD	43	40.1
1500 Crew Cab SLE	2.7L	4WD	43	40.1
1500 Crew Cab SLT	5.3L V8	RWD	43	40.1
1500 Crew Cab SLT	5.3L V8	4WD	43	40.1
1500 Extended Cab	4.3L V6	RWD	43	39.9
1500 Extended Cab	4.3L V6	4WD	43	39.9
1500 Extended Cab AT4	5.3L V8	4WD	43	39.9
1500 Extended Cab Elevation	2.7L	RWD	43	39.9
1500 Extended Cab Elevation	2.7L	4WD	43	39.9
1500 Extended Cab SLE	2.7L	RWD	43	39.9
1500 Extended Cab SLE	2.7L	4WD	43	39.9
1500 Extended Cab SLT	5.3L V8	RWD	43	39.9
1500 Extended Cab SLT	5.3L V8	4WD	43	39.9
1500 Regular Cab	4.3L V6	RWD	43.1
1500 Regular Cab	4.3L V6	4WD	43.1

2002 GMC Sierra 1500

Headroom (Imp.)

Trim	Eng.	Drive train	1st Row Headroom (in)	2nd Row Headroom (in)
1500 Extended Cab Denali	6.0L V8	AWD	41	38.4
1500 Extended Cab SL	4.8L V8	RWD	41	38.4
1500 Extended Cab SL	4.8L V8	4WD	41	38.4
1500 Extended Cab SLE	4.8L V8	RWD	41	38.4
1500 Extended Cab SLE	4.8L V8	4WD	41	38.4
1500 Extended Cab SLT	4.8L V8	RWD	41	38.4
1500 Extended Cab SLT	4.8L V8	4WD	41	38.4
1500 Regular Cab SL	4.8L V8	4WD	41
1500 Regular Cab SLE	4.8L V8	RWD	41
1500 Regular Cab SLE	4.8L V8	4WD	41
1500 Regular Cab SL	4.3L V6	RWD	41
HD 1500 Crew Cab SLE	6.0L V8	RWD	41.1	39.9
HD 1500 Crew Cab SLE	6.0L V8	4WD	41.1	39.9
HD 1500 Crew Cab SLT	6.0L V8	RWD	41.1	39.9
HD 1500 Crew Cab SLT	6.0L V8	4WD	41.1	39.9

2020 GMC Sierra 1500

Headroom (Metric)

Trim	Eng.	Drive train	1st Row Headroom (cm)	2nd Row Headroom (cm)
1500 Crew Cab 147" AT4	5.3L V8	4WD	109.2	101.9
1500 Crew Cab 157" AT4	5.3L V8	4WD	109.2	101.9
1500 Double Cab 147" AT4	5.3L V8	4WD	109.2	101.3
1500 Crew Cab 147"	4.3L V6	RWD	109.2	101.9
1500 Crew Cab 157"	4.3L V6	RWD	109.2	101.9
1500 Double Cab 147"	4.3L V6	RWD	109.2	101.3
1500 Reg Cab 140"	4.3L V6	RWD	109.5
1500 Crew Cab 147"	4.3L V6	4WD	109.2	101.9
1500 Crew Cab 157"	4.3L V6	4WD	109.2	101.9
1500 Double Cab 147"	4.3L V6	4WD	109.2	101.3
1500 Reg Cab 140"	4.3L V6	4WD	109.5
1500 Crew Cab 147" Denali	5.3L V8	RWD	109.2	101.9
1500 Crew Cab 157" Denali	5.3L V8	RWD	109.2	101.9
1500 Crew Cab 147" Denali	5.3L V8	4WD	109.2	101.9
1500 Crew Cab 157" Denali	5.3L V8	4WD	109.2	101.9
1500 Crew Cab 147" Elevation	2.7L	RWD	109.2	101.9
1500 Crew Cab 157" Elevation	2.7L	RWD	109.2	101.9
1500 Double Cab 147" Elevation	2.7L	RWD	109.2	101.3
1500 Crew Cab 147" Elevation	2.7L	4WD	109.2	101.9
1500 Crew Cab 157" Elevation	2.7L	4WD	109.2	101.9
1500 Double Cab 147" Elevation	2.7L	4WD	109.2	101.3
1500 Crew Cab 147" SLE	2.7L	RWD	109.2	101.9
1500 Crew Cab 157" SLE	2.7L	RWD	109.2	101.9
1500 Double Cab 147" SLE	2.7L	RWD	109.2	101.3
1500 Crew Cab 147" SLE	2.7L	4WD	109.2	101.9
1500 Crew Cab 157" SLE	2.7L	4WD	109.2	101.9
1500 Double Cab 147" SLE	2.7L	4WD	109.2	101.3
1500 Crew Cab 147" SLT	5.3L V8	RWD	109.2	101.9
1500 Crew Cab 157" SLT	5.3L V8	RWD	109.2	101.9
1500 Double Cab 147" SLT	5.3L V8	RWD	109.2	101.3
1500 Crew Cab 147" SLT	5.3L V8	4WD	109.2	101.9
1500 Crew Cab 157" SLT	5.3L V8	4WD	109.2	101.9
1500 Double Cab 147" SLT	5.3L V8	4WD	109.2	101.3
1500 Crew Cab	4.3L V6	RWD	109.2	101.9
1500 Crew Cab	4.3L V6	4WD	109.2	101.9
1500 Crew Cab AT4	5.3L V8	4WD	109.2	101.9
1500 Crew Cab Denali	5.3L V8	RWD	109.2	101.9
1500 Crew Cab Denali	5.3L V8	4WD	109.2	101.9
1500 Crew Cab Elevation	2.7L	RWD	109.2	101.9
1500 Crew Cab Elevation	2.7L	4WD	109.2	101.9
1500 Crew Cab SLE	2.7L	RWD	109.2	101.9
1500 Crew Cab SLE	2.7L	4WD	109.2	101.9
1500 Crew Cab SLT	5.3L V8	RWD	109.2	101.9
1500 Crew Cab SLT	5.3L V8	4WD	109.2	101.9
1500 Extended Cab	4.3L V6	RWD	109.2	101.3
1500 Extended Cab	4.3L V6	4WD	109.2	101.3
1500 Extended Cab AT4	5.3L V8	4WD	109.2	101.3
1500 Extended Cab Elevation	2.7L	RWD	109.2	101.3
1500 Extended Cab Elevation	2.7L	4WD	109.2	101.3
1500 Extended Cab SLE	2.7L	RWD	109.2	101.3
1500 Extended Cab SLE	2.7L	4WD	109.2	101.3
1500 Extended Cab SLT	5.3L V8	RWD	109.2	101.3
1500 Extended Cab SLT	5.3L V8	4WD	109.2	101.3
1500 Regular Cab	4.3L V6	RWD	109.5
1500 Regular Cab	4.3L V6	4WD	109.5

2020 GMC Sierra 1500

Headroom (Metric)

Trim	Eng.	Drive train	1st Row Headroom (cm)	2nd Row Headroom (cm)
1500 Extended Cab Denali	6.0L V8	AWD	104.1	97.5
1500 Extended Cab SL	4.8L V8	RWD	104.1	97.5
1500 Extended Cab SL	4.8L V8	4WD	104.1	97.5
1500 Extended Cab SLE	4.8L V8	RWD	104.1	97.5
1500 Extended Cab SLE	4.8L V8	4WD	104.1	97.5
1500 Extended Cab SLT	4.8L V8	RWD	104.1	97.5
1500 Extended Cab SLT	4.8L V8	4WD	104.1	97.5
1500 Regular Cab SL	4.8L V8	4WD	104.1
1500 Regular Cab SLE	4.8L V8	RWD	104.1
1500 Regular Cab SLE	4.8L V8	4WD	104.1
1500 Regular Cab SL	4.3L V6	RWD	104.1
HD 1500 Crew Cab SLE	6.0L V8	RWD	104.4	101.3
HD 1500 Crew Cab SLE	6.0L V8	4WD	104.4	101.3
HD 1500 Crew Cab SLT	6.0L V8	RWD	104.4	101.3
HD 1500 Crew Cab SLT	6.0L V8	4WD	104.4	101.3