I have a 2005 gmc sierra 1500 4.3 v6. I get no kind of codes just going down the road and it die or start it up in the morning and it would just shut off.

Asked by Jun 03, 2017 at 09:49 PM about the 2005 GMC Sierra 1500 Work Truck Standard Cab SB

Question type: General

I've changed the icm , the cps , plugs, wires, distributor cap and button. I've clean the throttle body. changed the serpentine belt and had the alternator tested. I've checked fuses. had the fuel pressure tested and its good. I'm at my wits end.

1 Answer

73,045

Try cleaning the Mass Air Flow Sensor in the air inlet tube. Clean the sensor and the screen in the unit with the appropriate MAF spray cleaner. Also make sure the air filter is clean. Another thing to do is check for vacuum leaks, and change out the fuel filter.

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