For 1990-2009 cars

# Warranty Admin. - Revised Mass Air Flow Core Return Requirements

Subject: | Revised Mass Air Flow Core Return Requirements

Models: | 2007 and Prior GM Passenger Cars and Light/Medium Duty Trucks

| 2007 and Prior HUMMER H2, H3

In the interest of customer satisfaction, GM SPO is revising the core inspection criteria on Mass Air Flow Sensors. The new criteria will enable customers to receive their core credit much easier. The new inspection criteria for Mass Air Flow Sensors is as follows:

• | The core must contain the sensing cap.

• | The core may not be disassembled or missing any of its components.

• | The shell must not be crushed.

This policy is effective October 1, 2006.