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Is it required to reset the computer PCM when changing the battery on a 2003 Chevy Trailblazer LS?
Wiki User
∙ 15y ago
When you change the battery you automatically reset the PCM. Any time you remove the negative battery cable for about 15-20 minutes you will reset the PCM. This will reset your Check engine light also.
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Wiki User
∙ 15y ago
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