Air Flow Meter/Sensor: Service and Repair

MASS AIR FLOW (MAF) SENSOR

IMPORTANT: Take care when handling the MAF sensor. Do not dent, puncture, or otherwise damage the Honeycell located at the air inlet end of the MAF sensor. Do not touch the sensing elements or allow anything (including cleaning solvents and lubricants) to come in contact with them. A small amount of GM lubricant (P/N =99855406) may be used on the air duct only, to aid in installation. Do not drop or roughly handle the MAF sensor.

REMOVE OR DISCONNECT
1. Negative battery cable.
2. Electrical connector.
3. Carefully loosen air duct clamps and remove MAF sensor.

INSTALL OR CONNECT

IMPORTANT: Embossed arrows on MAF sensor indicate air flow and must point toward engine.

1. MAF sensor into air duct. Tighten clamps to 4 Nm (36 lb in).
2. Electrical connector.
3. Negative battery cable.