2003 Chevy Astro blower motor

2003 CHEVROLET ASTRO
100,000 MILES • 6 CYL • 2WD • AUTOMATIC
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2003 Chevy Astro Van. I have a 03 Chevy Astro Van. The rear air conditioner is not working. The blower motor is good, I hooked it up to 12 volts and it works, when there is a load or the blower is hooked up the voltage drops down to 0 volts. The switch is good, the fuse is good and the rear condenser is getting cold, it's just not blowing out air. Is there a relay or something that is bad? All speeds for rear blower do not work, the front works great. Thanks Jim
Nov 8, 2010 at 9:21 PM
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Check the 12-volt circuit that supplies power to the blower motor with the blower motor on (with a load). There is probably a bad connection somewhere that fails under load.
Nov 8, 2010 at 9:24 PM