Diagnostic Aids
WARNING: This page is about a different car, the 2007 GMC Sierra, 2007 GMC Cab & Chassis Sierra, 2007 Chevrolet Silverado, and 2007 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Verify the integrity of the MAP sensor system by inspecting for the following conditions:
- Intake manifold vacuum leaks
- Any damage to the MAP sensor housing
- Any damage to the MAP sensor seal
- A loose or improperly installed MAP sensor
- A restriction in the vacuum source of the MAP sensor