Fuel gauge problem 04 TB

jonnyboy

Original poster
Member
Aug 28, 2012
1
I have a 2004 trailblazer, V6. My fuel gauge shows full when topped up and the needle decends down with use but never goes below 1/4 tank. Anyone have ideas as to what the problem is? Thanks Jonnyboy:hissyfit:
 

The_Roadie

Lifetime VIP Donor
Member
Nov 19, 2011
9,957
Portland, OR
Almost always the poorly designed fuel level sender. You're outside the years GM just issued a recall for. You have to drop the fuel tank to change it.

Welcome!

Are you a DIY'er or will you be calling a shop to do the work?

Assume the gauge goes properly to zero when you shut the truck off? If not it could be a bad gauge stepper motor.
 

JerryIrons

Member
Dec 20, 2011
434
Sometimes running some chevron techron through it helps. Unless of course you can't wait to drop the tank . :smile:
 

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