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 12, 2013 at 4:17 PM
2003 Chevrolet Astro Blower Motor Does Come On Checked Power Fuse Good Check
2003 CHEVROLET ASTRO
ANONYMOUS
- MEMBER
- 1 POST
Advertisement
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 12, 2013 at 4:29 PM
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 12, 2013 at 4:33 PM
Hi wrench, didn't see you, maybe you guys can use diagram.
Image (Click to enlarge)
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Click here to log in and view diagram.
Feb 12, 2013 at 4:35 PM
This is going to have a bad resister.
Feb 12, 2013 at 4:41 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.