Specifications Comparison: 2006 GMC Sierra 1500 vs 2004 GMC Sierra 1500

Legroom

Trim	Eng.	Drive train	1st Row Legroom (in)	2nd Row Legroom (in)
1500 Extended Cab SL	V6	RWD	41.3	33.7
1500 Extended Cab SL	V8	4WD	41.3	33.7
1500 Extended Cab SLE	V8	RWD	41.3
1500 Extended Cab SLE	V8	4WD	41.3	33.7
1500 Regular Cab SL	V6	RWD	41.3
1500 Regular Cab SL	V6	4WD	41.3
1500 Regular Cab SLE	V8	RWD	41.3
1500 Regular Cab SLE	V8	4WD	41.3
1500 Crew Cab SL	V8	RWD	41.3	39.1
1500 Crew Cab SL	V8	4WD	41.3	39.1
1500 Crew Cab SLE	V8	RWD	41.3	39.1
1500 Crew Cab SLE	V8	4WD	41.3	39.1
1500 Crew Cab SLT	V8	RWD	41.3	39.1
1500 Crew Cab SLT	V8	4WD	41.3	39.1
1500 Extended Cab SLT	V8	RWD	41.3	33.7
1500 Extended Cab SLT	V8	4WD	41.3	33.7
1500 Extended Cab SLE	V8	RWD	41.3	33.7
1500 Extended Cab SLE	V8	4WD	41.3	33.7
HD 1500 Crew Cab SLE	V8	RWD	41.3	38.8
HD 1500 Crew Cab SLE	V8	4WD	41.3	38.8
HD 1500 Crew Cab SLT	V8	RWD	41.3	38.8
HD 1500 Crew Cab SLT	V8	4WD	41.3	38.8
Crew Cab Denali	V8	AWD	41.3	39.1

Trim	Eng.	Drive train	1st Row Legroom (in)	2nd Row Legroom (in)
1500 Extended Cab	V8	RWD	41.3	33.7
1500 Extended Cab	V8	4WD	41.3	33.7
1500 Extended Cab SLE	V8	RWD	41.3	33.7
1500 Extended Cab SLE	V8	4WD	41.3	33.7
1500 Regular Cab	V6	RWD	41.3
1500 Regular Cab	V8	4WD	41.3
1500 Regular Cab SLE	V8	RWD	41.3
1500 Regular Cab SLE	V8	4WD	41.3
1500 Extended Cab SLT	V8	RWD	41.3	33.7
1500 Extended Cab SLT	V8	4WD	41.3	33.7
Crew Cab 1500 SLE	V8	RWD	41.3	39.1
Crew Cab 1500 SLE	V8	4WD	41.3	39.1
Crew Cab 1500 SLT	V8	RWD	41.3	39.1
Crew Cab 1500 SLT	V8	4WD	41.3	39.1
Extended Cab Denali	V8	AWD	41.3	33.7

Trim	Eng.	Drive train	1st Row Legroom (cm)	2nd Row Legroom (cm)
1500 Extended Cab SL	V6	RWD	104.9	85.6
1500 Extended Cab SL	V8	4WD	104.9	85.6
1500 Extended Cab SLE	V8	RWD	104.9
1500 Extended Cab SLE	V8	4WD	104.9	85.6
1500 Regular Cab SL	V6	RWD	104.9
1500 Regular Cab SL	V6	4WD	104.9
1500 Regular Cab SLE	V8	RWD	104.9
1500 Regular Cab SLE	V8	4WD	104.9
1500 Crew Cab SL	V8	RWD	104.9	99.3
1500 Crew Cab SL	V8	4WD	104.9	99.3
1500 Crew Cab SLE	V8	RWD	104.9	99.3
1500 Crew Cab SLE	V8	4WD	104.9	99.3
1500 Crew Cab SLT	V8	RWD	104.9	99.3
1500 Crew Cab SLT	V8	4WD	104.9	99.3
1500 Extended Cab SLT	V8	RWD	104.9	85.6
1500 Extended Cab SLT	V8	4WD	104.9	85.6
1500 Extended Cab SLE	V8	RWD	104.9	85.6
1500 Extended Cab SLE	V8	4WD	104.9	85.6
HD 1500 Crew Cab SLE	V8	RWD	104.9	98.6
HD 1500 Crew Cab SLE	V8	4WD	104.9	98.6
HD 1500 Crew Cab SLT	V8	RWD	104.9	98.6
HD 1500 Crew Cab SLT	V8	4WD	104.9	98.6
Crew Cab Denali	V8	AWD	104.9	99.3

Trim	Eng.	Drive train	1st Row Legroom (cm)	2nd Row Legroom (cm)
1500 Extended Cab	V8	RWD	104.9	85.6
1500 Extended Cab	V8	4WD	104.9	85.6
1500 Extended Cab SLE	V8	RWD	104.9	85.6
1500 Extended Cab SLE	V8	4WD	104.9	85.6
1500 Regular Cab	V6	RWD	104.9
1500 Regular Cab	V8	4WD	104.9
1500 Regular Cab SLE	V8	RWD	104.9
1500 Regular Cab SLE	V8	4WD	104.9
1500 Extended Cab SLT	V8	RWD	104.9	85.6
1500 Extended Cab SLT	V8	4WD	104.9	85.6
Crew Cab 1500 SLE	V8	RWD	104.9	99.3
Crew Cab 1500 SLE	V8	4WD	104.9	99.3
Crew Cab 1500 SLT	V8	RWD	104.9	99.3
Crew Cab 1500 SLT	V8	4WD	104.9	99.3
Extended Cab Denali	V8	AWD	104.9	85.6