Question about 1999 Pontiac Bonneville
When heater is on it doesn't always kick on right away. It will adjust to low and then back to high on it's own
Take the heater assembly thats located in your dash!! take it out unplugs !! replace it!! its a gm dealer product plug it back in that should fix the problem.....................
Posted on Feb 01, 2009
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Posted on Jan 02, 2017
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