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P2101 trailblazer wont start

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Posted on Jan 02, 2017

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SOURCE: I was trying to pass

P0101....Mass or Volume Air Flow Circuit Range/Performance Problem

i cannot find the code number you listed ,but this code is the generic code and if its right then its the mass air flow sensor as this would cause the engine to loose power and resetting it helps but the fault is still their and when its passing a lot of air like on acceleration then its not reading right and throwing the code causing the problem you describe ,So before you go mad at the expense then just change this unit first it should be in the air intake pipe between the air filter and the manifold and should have 4 wires running to it ,Not sure on this vehicle as iam a europeon mechanic and never seen one of these vehicles .The reason your code reader is reading a 2 in front of it is quite normal and you would need to connect it to the internet to upgrade it and download the codes to put in the machines memory so it will tell you what the code is ,well mine does anyway and it will read older europeon cars and american cars but europeon cars from 2005 ---- no chance

Posted on Aug 08, 2011


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I have error codes 2101 and 1516 on my 2004 chevy trailblazer truck will not star no spark at plugs

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Hello John Hightower,

Your light SES would be coming on because the associated
element seems to be failing (Click here)
2004 CHEVROLET TRAILBLAZER 5 3L V8 Throttle Position Sensor TPS RockAuto

Aditional item data
More Information for AIRTEX WELLS 5S13583

Once you get that 977000 par number.. THEN
YOU CAN Shop for better prices 977000 on eBay or AMAZON..

Hope this helps

Carnac the Magnificent

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If the problem is no crank, could be the security system, key switch, neutral safety switch, starter, cables, or battery.
I would check for power at the starer and work back.
Did you try it in neutral ?

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