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Old 05-20-2005, 03:48 PM
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A/c Blower Motor

HELLO.....2002 GMC 3500 THE A/C BLOWER MOTOR SHUTS OFF AT THE HIGHEST SETTING. SWITCH CHECKS OK .

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Old 05-20-2005, 03:55 PM
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Motor is probably going bad which is drawing too much current.

Vince
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Old 05-21-2005, 01:14 AM
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If it's wired like one from 30 years ago, it may have a bad high-speed relay.
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Old 05-21-2005, 01:30 AM
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blower

High speed relay
bad connection between relay and motor
mine doesn't work on economy setting
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