These trucks do not have a cabin air filter.
They don't have one
apparently you don't have one. gm stopped including them after 2003
don't know
2006 GMC Envoy Denali is not factory equipped with a cabin air filter. You can do a modification to add one but it takes some cutting. If you're so inclined, you can find directions on the internet.
where is the oil filter located on an 2002 GMC Envoy
Call your local parts store and they will tell you.
Where is the fuel filter located on a 2005 gmc envoy 4x4 4.2
Purchase a Purolator cabin filter for your truck, it comes with complete instructions.
Change oil pump 2003 Gmc Envoy
how many gallons of gass will a 2003 GMC Envoy hold
How to Replace a Cabin Air Filter on a 2006 GMC
ac delco spark plugs are type that originally came with 2003 GMC envoy