Question about 1999 Pontiac Grand Am GT

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Does a 1999 grand am have an ecm and if so where is it located

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It has a PCM rather than an ECM. PCM includes transmission control as well as engine control. The module is in the air cleaner housing as shown below (#3 in pic). Please let me know if you have more questions.

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Posted on Nov 14, 2010

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SOURCE: where is ecm computer located

On the right side firewall behind the coolant recovery bottle.

Posted on Jun 02, 2009

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