Question about 1996 Chevrolet Blazer

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Where is the location for code 1406 96 chevy blazer 6 cylinder. we are getting a whistling or like an air exhale when presing the gas. The computer that we put to it stated the code 1406. We have found in the book that it is a differential sensor downstream hose is off...we would like to know where the hose is and if thats all it is

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P1406 is a EGR problem on the gm products, P1406 is a vent hose disconnect to the axle on the ford products. The PCM does not know where the EGR pintle is. This can cause poor running and bad idle. About the only thing that you can do is remove the EGR, clean it and carefully inspect the plug and connections on the valve its self. If that does not solve the problem then its time for a new one. Look at the wiring harness to the valve for crushed / cut wire also. It is possible to bench test the valve but it does require a good multimeter. Good luck and hope this helps. Use a carb cleaner to get the carbon out of the EGR valve

Posted on Jun 20, 2009

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Posted on Jan 02, 2017

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