Two problems related to computer failure have been reported for the 2005 Chevrolet Trailblazer. The most recently reported issues are listed below.
I have had numerous electrical problems with my 2005 chevy Trailblazer (82,000 miles). I have had sensors replaced, my headlights randomly "flicker" to dim while driving at night, brake lights and front turning signals all going out at the exact same time and replacing the bulbs and/or fuses don't fix the problem, now I have two service engine lights on. Dealer says it is an electrical issue. The car is not drivable over 20 mph, it has no power and the transmission has been affected by the computer failure. My Trailblazer was driving perfectly fine, thn the brake lights went out, front signals went out, service lights came on and I was unable to drive the car, all within an hour. The one modeule that is being replaced is 650. 00 with a diagnosis fee of 200. 00 to check the computer system of the transmission as 7 different codes came up on the transmission as well. So the repair fee is going to be a fortune. I find it odd that so many other people have had the same kind of issues and there has not been a recall for these electrical issues!!!.
2005 tb has consistent electrical problems. Fuel sensor has failed and been replaced, numerous bulbs failed and replaced, now odometer/trip computer has failed. Lights consistently dim/brighten. Vehicle will idle low and stall on occasion.