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Old 07-17-2017, 01:37 PM   #10
gpmodelj70
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Re: 99 malibu...temp gauge & AC

Quote:
Originally Posted by brcidd View Post
Is yours a manual a/c system (no digital readout for temp control) if so read on:

Does the green a/c indicator light go off as well-- if so wiggle the fan speed switch- it acts as the "Master" on-off switch for a/c- and the contacts get hardened grease on them that disables the a/c command-- seen a bunch of them. Fix is to remove blower switch and polish the contact surface area with a pencil eraser....
Did that...no change...still same issue...swapped out the dash control with a known good one...no help
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