maybe behind the glove box? not sure

 

I think it is in the glove box, there should be a little door in the back of the box and then there are two filters side by side. You remove the first then slide the second over and out the same space the first was in.

 

^ What he said. I just changed them out on my '07 Uplander.

 

Can someone knows where and how to have access to the cabin air filter on a 2008 Montana sv6?

Thanks.

• Open the instrument panel compartment door.
• Remove the door located at the rear of the instrument panel compartment.
• Open the A/C and heater module access door, Fig. .
• Remove the first cabin air filter through the A/C and heater module access...

 

Read the vehicle owner's manual for specific instructions. If you don't have one - buy one.

Good luck.