2001 Chevy Astro Blower speeds

2001 CHEVROLET ASTRO
103,000 MILES • 6 CYL • 2WD • AUTOMATIC
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NURBIEL
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The blower motor will only run if the controller is set to the highest possible setting.
I've replaced the controller in the dash.
When I check the voltage at the motor, I get no voltage on the lowest setting. I get some voltage on settings 2 and 3. I get about 12 volts on the highest setting.
Is the blower motor bad?
Is there another part between the controller and the motor I should be checking?
Jun 18, 2008 at 7:13 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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