Question about 2004 Chevrolet Silverado 2500HD

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2004 chevy 2500 hd 6.0 ltr gas engine 4x4

Will map sensor make vehicle spark knock and can you unplug the sensor and see if it runs normal or will that damage somthing or would it most likley be knock sensor

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No and No...And it's the "MAS". "Unhooking" the MAS will place your ECM in the "limp back" mode...in other words it will run like ****.
Did you try the O2 sensors (3)? These are notorious for failing. Try a cheap fix...Buy a can of "SeaFoam" at Advance Auto Parts ($9) and add to your tank per instructions.
Good Luck

Posted on Jun 28, 2009

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Posted on Jan 02, 2017

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