my blower motor does not come on. i checked for power and do not have checked fuse it is good dont know what to check
Feb 13, 2013 at 12:17 AM
2003 Chevrolet Astro Blower Motor Does Come On Checked Power Fuse Good Check
2003 CHEVROLET ASTRO
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WRENCHTECH
- ✓ASE Certified Mechanic
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Check the FRT HVAC fuse (30amp) in the underhood fuse box and if that is good, then you likely have a bad blower resister.
Feb 13, 2013 at 12:29 AM
JDL
- ✓ASE Certified Mechanic
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At the front blower, purple wire is voltage. Black is ground. At the top right of diagram that front hvac fuse, is hot all the time. Use a voltage tester, check for voltage at the fuse circuit. That voltage on that circuit is only for high-speed, only. When that relay in the resistor assembly is energized, that line with the arrow head moves to the other terminal, carries voltage to front blower motor. When relay is not energized, you have continuity for lower speeds. Could be problem with resistor assembly?
Feb 13, 2013 at 12:33 AM
JDL
- ✓ASE Certified Mechanic
- 16,098 POSTS
Hi wrench, didn't see you, maybe you guys can use diagram.
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Professional Diagram for 2CarPros Members
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Feb 13, 2013 at 12:35 AM
WRENCHTECH
- ✓ASE Certified Mechanic
- 20,761 POSTS
This is going to have a bad resister.
Feb 13, 2013 at 12:41 AM
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