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Dissconnect the battery, then remove the air cleaner. Unplug the electrical connector. Unscrew the clamps that secure the MAF (Mass Air Flow Sensor) and then remove from the vehicle. Installation is the reverse.

If you have been getting a trouble code (Check Gauges light) for the MAF, it could be because the MAF is dirty. Carefully disassemble the MAF (Torx screws- I think)and inspect the thin wires inside, they should be silver in colour. Ir they are black (dirty) you can clean them (very carefully) with a Q-Tip soaked in rubbing alcohol. After reassembly, disconnect the battery (if you haven't already) for a few minutes to erase the codes in the computer. Fingers crossed your van is now working fine!

Twice in 4 years I have been able to clear the MAF code by using a spray cleaner. Use one specifically designed for MAF sensors. Most autoparts stores carry them.

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โˆ™ 2010-06-18 13:04:34
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Q: How do you replace a mass air sensor in a 1999 GM Safari?
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