Three problems related to loud engine noise have been reported for the 2002 Chevrolet Trailblazer. The most recently reported issues are listed below.
The fan clutch on this particular model has a long history of failure, repair mechanic has replaced many of these units. This failure causes a loud noise to emanate from the engine and renders the vehicle unsafe to drive due to potential engine overhearting and fan clutch lock-up.
2002 Trailblazer suddenly started making loud noise as if a jet airplane and delayed transmission shifting, along with loss of power. Took it to mechanic and they replaced fan clutch to the tune of 730. 00.
2002 chevy Trailblazer- while traveling on I-76 in philadelphia, PA at approximately 55 mhp the engine in my Trailblazer began to make a loud noise, lost power & shut off. The vehicle had approximately 5,400 miles on it at the time. Fortunately, I was somehow able to make it off the highway without incident. The outcome of the problem was engine failure, a liner within the engine came loose & caused piston failure. The vehicle had to be towed & the engine replaced.