Specifications Comparison: 2006 GMC Envoy vs 2008 GMC Envoy

Headroom

Trim	Eng.	Drive train	1st Row Headroom (in)	2nd Row Headroom (in)	3rd Row Headroom (in)
SLE	I6	RWD	40.2	39.6
SLE	I6	4WD	40.2	39.6
SLT	I6	RWD	40.2	39.6
SLT	I6	4WD	40.2	39.6
Denali	V8	RWD	40.2	39.6
Denali	V8	4WD	40.2	39.6
XL Denali	V8	RWD	40.2	39.6	38.1
XL Denali	V8	4WD	40.2	39.6	38.1
XL SLE	I6	RWD	40.2	39.6	38.1
XL SLE	I6	4WD	40.2	39.6	38.1
XL SLT	I6	RWD	40.2	39.6	38.1
XL SLT	I6	4WD	40.2	39.6	38.1

Trim	Eng.	Drive train	1st Row Headroom (in)	2nd Row Headroom (in)
Denali	5.3L V8	RWD	40.2	39.6
Denali	5.3L V8	4WD	40.2	39.6
SLE	4.2L I6		40.2	39.6
SLE	4.2L I6		40.2	39.6
SLT	4.2L I6	RWD	40.2	39.6
SLT	4.2L I6	4WD	40.2	39.6

Trim	Eng.	Drive train	1st Row Headroom (cm)	2nd Row Headroom (cm)	3rd Row Headroom (cm)
SLE	I6	RWD	102.1	100.6
SLE	I6	4WD	102.1	100.6
SLT	I6	RWD	102.1	100.6
SLT	I6	4WD	102.1	100.6
Denali	V8	RWD	102.1	100.6
Denali	V8	4WD	102.1	100.6
XL Denali	V8	RWD	102.1	100.6	96.8
XL Denali	V8	4WD	102.1	100.6	96.8
XL SLE	I6	RWD	102.1	100.6	96.8
XL SLE	I6	4WD	102.1	100.6	96.8
XL SLT	I6	RWD	102.1	100.6	96.8
XL SLT	I6	4WD	102.1	100.6	96.8