Cabin air filter location?

under hood pass side between firewall and engine air filter canister.

 

What part or where to get filter under bunk? Is it the same one that is for cabin?

 

The filter under the bunk is accessed by the side door or by lifting the bunk. On the passenger side you will see the HVAC housing. At the bottom of it (IIRC) there is a slide out filter.

Martin

 

I know where it is but is it the same one as the hvac in the front?

 

Doubtful. Most of the trucks I've dealt with have used different filters for the cabin and bunk. It'd just be too convenient for the driver/maintenance techs/parts manager, for the manufacturer to use the same part, or standardize parts along a product line.

 

The bunk heater filter is a different style than the cab filter on the firewall. To add even more to this, there is a second heater filter under the dash. It is primarily for when air recirculation is set. It has a similar function as the bunk heater filter. The firewall cab filter only filters the outside air coming in. The other filters are for filtering cab and bunk interior air. So, there are a total of 3 different cab/heater filters on the Columbia.

 

I found and replaced the firewall filter and the one under the bunk. But is there one under the dash for the heater and air recirculation and how do I get to it