GMC Sonoma

Where is the mass air flow sensor on a 2003 gmc sonoma?

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2008-11-21 07:50:15
2008-11-21 07:50:15

I assume you wish to reset your ECU (computer). It really depends on the year. On my 97 626: Remove negative battery cable, depress brakes for 10-15 seconds(to ensure power is completely depleted). Reconnect Battery. This will reset your computer. you may need to put a code into a factory installed radio (to make the radio work again). Please note: Your ECU needs to "re-learn" how to run your engine, your car may run rough for awhile as the ECU "learns" how to operate your engine. It may take 40 miles or so, its a good idea to do both city and highway driving to make sure the ECU sets itself properly.

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