GM Service Manual Online
For 1990-2009 cars only

Passenger Compartment Air Filter - keywords dirt dust HVAC case

Subject:Passenger Compartment Air Filter

Models:2003-2008 Cadillac Escalade Models
2003-2008 Chevrolet Avalanche, Silverado, Silverado Classic, Suburban, Tahoe
2003-2008 GMC Sierra, Sierra Classic, Yukon, Yukon Denali, Yukon XL, Yukon Denali XL
2003-2008 Hummer H2



This PI was superceded to update Model Years. Please discard PIT3330C.


The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

Condition/Concern:

A customer may inquire about the availability of the passenger compartment air filter.

Recommendation/Instructions:

Starting in the 2003 model year, the passenger compartment air filter is no longer available as a factory option. With the redesigned HVAC case, the opening for the filter cavity has been molded over.

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.