Table 1 shows 25 common electrical system related problems of the 2004 Chevrolet Trailblazer. The number one most common problem is related to the electrical system (302 problems). The second most common problem is related to the instrument panel (259 problems).
Electronic throttle body? no throttle control, motor will only idle, turn ignition switch off, then restart it will run. Reduced engine power light comes on. Happens for no apparent reason. Very unsafe situation. Read details...
Speedometer stuck at 0 mph even when vehicle was in motion on highway. Read details...
1 owner vehicle - bought in 2004 & had 8 miles on it. Has been very well kept & currently has only 65,000 miles on it as of 9/16/19. As others, the electrical cluster has malfunctioned. Speedometer quit working over a year ago & now the fuel gauge has failed. Read details...