TrailBlazer 2002-2009
The TrailBlazer, originally introduced as an upscale Blazer, was produced from 2002 to 2008 with a powerful I6 engine and with a monster V8 offered in the Trailblazer SS
Platform: GMT 305, 360, & 370.

04 LT FUEL LEVEL PROBLEMS

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Old April 28th, 2008, 1:37 PM
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Default 04 LT FUEL LEVEL PROBLEMS

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Old April 28th, 2008, 3:27 PM
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Default RE: 04 LT FUEL LEVEL PROBLEMS

Check your caps lock bro. Edit your post and make everything properly cased.
Old April 29th, 2008, 1:39 PM
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Default RE: 04 LT FUEL LEVEL PROBLEMS

just from the title.
there issues with gas and the higher levels of sulfur.
it builds up in the tank and on the level sending units resistor.
its what causes the erratic readings. since it cant read the proper resistance- you see that as a funny acting gas gauge.
try running a bottle or 2 of TECHRON FUEL SYSTEM cleaner. (make sure the bottle says it helps with SULFUR buildup).
see if that helps. if it doesnt- then time to replace the level sender.
if it fails to help correct the problem, at least its cleaned the fuel injectors and valves.
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