Blower Case

Lower. Inlet. This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors Original equipment parts are designed to work with your GM vehicle safety systems -- aftermarket replacement parts may not meet the same OE safety regulations, depending on the part type

HVAC Unit Case

Blower cutoff.

7.0L. With supercharged. 4.4L. 2nd design. Allows HVAC controls to function during low engine vacuum conditions This GM Genuine Part is designed, engineered, and tested to rigorous standards and is backed by General Motors