2006 Chevrolet TrailBlazer EXT LS 4dr SUV 4WD (4.2L 6cyl 4A)
I bought the 2006 Trailblazer EXT with 20,000 miles. A week after I bought it the emissions light came on. I have had it to the garage 6 times and every time I get it the light is off. After driving it about a week the emissions light comes back on. They have replaced sensors and fuel valves. The vehicle has been to a General Motors dealer but they have not fixed the problem. The fuel gauge drops to empty when there is a quarter tank of gas. When I start the engine the gas gauge goes to where it is suppose to be and then after driving a little distance it again drops to empty and the low full light gauge comes on. Any idea how to fix the problem.
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