2003 Chevrolet Astro Repair Question
Topics covered: Fuse, Blower motor, Fuse box.
Mileage: 145,000 miles.
Mileage: 145,000 miles.
Asked on February 13, 2013
Chevrolet Astro Fuse Problem
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
Asked by (pending member)Answer
Replied on February 13, 2013
Check the FRT HVAC fuse (30amp) in the underhood fuse box and if that is good, then you likely have a bad blower resister.
Replied on February 13, 2013
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?
Replied on February 13, 2013
Hi wrench, didn't see you, maybe you guys can use diagram.
Replied on February 13, 2013
This is going to have a bad resister.