One problem related to front suspension control arm has been reported for the 2004 Chevrolet Trailblazer. The most recently reported issues are listed below.
Certain sport utility vehicles equipped with 4 -wheel drive fail to comply with the requirements of federal motor vehicle safety standard no. 101, no. 110, no. 114, no. 225, no. 209, & no. 208. Vechicles were built with a left -front brake pipe with a circumferential score at a random location along the lenght of the pipe as the result of the manufacturing process. If the brake pipe partially or fully fractured,brake pedal travel would immediately increase and front brake performance would be reduced under certain circumstances the front lower control arm brackets may fracture. Missing welds on the rear flow plan the calibration of the transfer case control module could cause insufficient high speed gear engagement. This fracture could result in separation of the front lower control arm from the frame some of these vehicles were built with a range shift collar in the transmission transfer case that contains cracks.