Plenum Chamber and Drain Valve-Cleaning
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2003 GMC Yukon XL, 2003 GMC Yukon, 2003 Chevrolet Tahoe, 2003 Chevrolet Suburban, and 2003 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
The plenum chamber is located in front of the windshield and below the air inlet grille panel.
- Remove the air inlet grille panel.
- Clean the plenum chamber, drains and the air inlet grille panel of debris blockage.
- Flush the plenum chamber, drains and the air inlet grille panel with clean water.
- Install the air inlet grille panel.