2006 Chevrolet TrailBlazer LS 4dr SUV 4WD (4.2L 6cyl 4A)
We had a fuel sensor issue with the Trailblazer.
The gas gague always read empty when the sensor went out.
There is a "hidden assistance recall" that GM has that you have to go thru a dealer.
We were quoted $340 just to replace the sensor and not the pump.
We found the sensor on e-bay for $25.00 and did it ourselves.