One problem related to driveshaft has been reported for the 2006 Chevrolet Trailblazer. The most recently reported issues are listed below.
This has happened to me 4 times in the last year and a half first time at a red light it turned green I was the only car at the light when I hit the gas it felt like someone rear ended me look no one behind me then the rear brakes were locked up I drove it 1/4 of a mile and they unlocked them selves I drove to my dealer told them he looked it up said there was a service bulletin about that took my blazer in for a oil change an I supposed looked at the brakes then about 6 months later the same thing and it felt like some one rear ended me again but no one there behind me. . Then about a month ago in July the same thing at a red lite and I had 3 senior citizens in the blazer when they all thought some one ran into the rear of me but no one was behind me the rear brakes only stayed locked up maybe 300 yards and then released . . Then today at a stop sign 8-16-2012 same thing then all kind of noise going to the doctors office about 1/4 of a mile away got into the parking lot an the drive shaft fell out at the front of the trans here both bars trailing arms at the rear axle broke had to have it towed the Chevrolet dealership(greenwood) in austintown ohio I have 43000 miles on it and bought it new at greenwood Chevrolet.