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Christie08 -> Service Engine Light--PO128 (1/11/2008 8:10:21 PM)
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Hello all. New here, I have an '03 Trailblazer 91,000 miles, my service engine light was coming on after every gas fill up then would go off once I hit a half tank, so I switched gas stations and after a couple fill ups I went and bought a new gas cap. Went to today to auto zone because it still came on and the code PO128 which gave 3 options, coolent was low, thermostat sensor was going out, or thermostat was going out. They checked my coolant and it is full and looks good. Is this something I should just go ahead and take in the dealership? and is this going to be an expensive bill? ..lol Thanks in advance!
Christie
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