Question about Buick LeSabre
The light only comes on for 3 reasons. 1 the regulator is bad and is not charging the battery. 2 the altenator is bad and is not charging the battery. 3 there is a fault in the ecm that is keeping the light on. if the battery is being kept charged up then the problem is in the ecm. You might be able to fix this by disconnecting the battery for 30 minutes. Resets the ecm. There isn't a reset for the light.
Posted on May 17, 2011
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Posted on Jan 02, 2017
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