The HVAC blower motor may stop working at one or more speeds due to a faulty blower motor resistor block. Our technicians recommend to confirm the resistor is at fault by first checking the operation of the switch.Google+
Car Problem Reports
Chevrolet Trailblazer AC Blower Inop Due to Failed Resistor
Chevrolet Trailblazer Problem
Average Mileage: 91,127 mi (10,500 mi - 153,000 mi)
Visitor, 2003 Chevrolet Trailblazer, 74,348 mi
when i turn on my a/c the engine cuts off an sometimes idle up an down then cut off
Blower does not work at level 5. Only runs on levels 1 - 4. Replaced blower resistor and that solved the problem.
Visitor, 2008 Chevrolet Trailblazer, 64,000 mi
my a/c blower does not go off even when my key is out of the ignition. the temperature gauge goes from 80 degrees all the way down to 10 degrees and back up again intermittently. Now my a/c says it's on full blast but nothing is coming out of the blower at all.
Visitor, 2005 Chevrolet Trailblazer
Rear A/C Heater doesn't work
Visitor, 2004 Chevrolet Trailblazer
front Blower motor stays on with key out of Ignition.
Visitor, 2002 Chevrolet Trailblazer, 49,454 mi
Heater only worked on speed 4-5. Independent repair shop $55 part, $25 labor.
Visitor, 2003 Chevrolet Trailblazer, 23,545 mi
Speed control #5 nor working.
Visitor, 2004 Chevrolet Trailblazer, 116,277 mi
Speeds 1-4 work, #5 quit today, nothing at all. After reading reviews and some internet searches on different sites, I've narrowed the problem down to a faulty resistor and purchased one online through Amazon. I'll let you know if this is successful as with others to remedy the problem.
Visitor, 2002 Chevrolet Trailblazer, 99,207 mi
Level 1,2,3,4 on A/c not working
Visitor, 2002 Chevrolet Trailblazer
only high blower speed had to replace speed resistor