Question about 2003 Chevrolet TrailBlazer

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Fuel gage not working but low fuel light staying on what will cause this? Rita

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It's the fuel level sensor. I just did one. It's about 95 for the sensor. I'd estimate 3.0 hrs labor. I'm a Audi tech and did it quick. I didn't do the sending unit too but if you don't wanna pay labor twice I'd do it too while the tanks out. Chevys are notorious for fuel pumps dieing also. And also there will be a code stored when the sensor Fails and it might or might not set the check engine light.

Posted on Jun 03, 2013

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The usual cause is the fuel level sensor.It is located in the fuel tank and can be serviced separately from the fuel pump.Some repair shops will try to sell you the complete fuel module which includes the level sensor and fuel pump assembly.Either way the fuel tank has to come out to replace the level sensor.Depending on miles and the year of your vehicle it might be a good idea to replace the complete unit.This could be costly.Hope this helps.Good luck.

Posted on Aug 28, 2010

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Sounds like sending unit or float in the fuel tank is broken check for fuel tank damage under car

Posted on Aug 28, 2010

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