Question about 2006 Chevrolet HHR
Do I need to un-hook any battery cables to install a new ecm on my Chevy HHR?
Yes. you can disconnect either the neg or pos cable from the battery. failure to do so can result in a surge hitting the ECM...and frying it. as a rule of thumb...anytime you work on anything under the hood,except for oil canges...disconnect the battery. safety is first!!!
Posted on Apr 30, 2010
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Posted on Jan 02, 2017
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