Diagnostic Aids

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2008 GMC Yukon XL, 2008 GMC Yukon, 2008 Chevrolet Tahoe, 2008 Chevrolet Suburban, and 2008 Chevrolet Avalanche. 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