Question about 2007 Chevrolet TrailBlazer SS

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My check engine light comes off and goes off on it's own is there a way to fix this I have a 2007 chevy trailblazer ss

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Iwould guess the you have some kind of a with the fuel system presserization system or EVAP .The fuel system runs 8 differant self tests every time you start the vehicle if 1 fails it will set the MIL light off . But then go out in a few starts . If the vehicle is running OK then the next time it happens take it to your local auto parts store they will read the code at no charge . If its code P0440 or P0441 and so on . Then it has to do with this system and it could be something as a bad seal at the gas cap witch is not uncommon . But the problem will not hurt the engine and it also has to due with how much fuel is in the tank at the time .If the tank is less then 15 % or 15 % empty then the self test can be in error

Posted on Mar 22, 2011

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Abslight stays on. How to fix? This is a2007trailblazer?


First you need to have EBCM - electronic brake control module check for DTC'S - diagnostic trouble code's . If the light is on there is a code stored . I think most part stores can do this and for free . After you find out what code is stored , looking up that code in service repair information for diagnostic trouble shooting chart would be next step . There are a few codes too.
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Find the code do the diagnostic's , fix the problem , wiring issue's , a sensor , bad module ,what ever it is . The light will go out then . Here is a sample of code discription .
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1 Answer

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2007 Chevy Trailblazer cranks but wont start


NEEDS FURTHER DIAGNOSIS. CALL (517) 489-1566 BRING TO AUTOWORX IN W. LANSING. I AM THE OWNER JEFF

Mar 09, 2014 | 2007 Chevrolet TrailBlazer SS

1 Answer

How to reset check engine light on 2007 trailblazer


It can be reset with a code scanner, but it will just come back on if the problem is not fixed first.

Jan 18, 2011 | 2007 Chevrolet TrailBlazer SS

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2007 Chevy Trailblazer - Dome/Reading light come on when entering and exiting the vehicle. They also work when the brightness level knob is turned full on; however, when the vehicle is running and you push...


Some late model GM produtcs have a override swich on the dash that is part of the dome light circuit, I can't say for sure about this particular model, check you owner manual, or call your local chevy dealer if you don't have the manual before you assume there is somthing mecahiclly wrong.

Jan 17, 2011 | 2007 Chevrolet TrailBlazer SS

1 Answer

2007 Chevy Trailblazer won't start


the ignition switch is a very common problem with these vehicles. when the problem is occuring check the pink wire coming off the ignition switch and see if there is power. the computer controls the starter on this vehicle and if there is insuficient voltage going to the ecu it will not power up.

Jul 08, 2010 | 2007 Chevrolet TrailBlazer SS

1 Answer

My car fuel level gauge sometimes goes to empty even it has fuel in the tank.the check engine light is on and i pull a code it say fuel level sensor unit hight input.what seem to be the problem?


Mine too! I have a 2007 Chevy Malibu also and I knoticed it does that or bounces up and down once my tank gets to half full. Have you found a solution? Sometimes my check engine light comes on and sometimes it doesn't.

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