1997 GMC Sierra what is a pcm

1997 GMC SIERRA
280,000 MILES • 6 CYL • 2WD • AUTOMATIC
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BOWDEN
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what is a powertrain control module
Jul 8, 2008 at 9:35 PM
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DOCHAGERTY
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In the broadest sense it is the microprocessor controlled unit that receives information from various sensors and regulates the amount of fuel injected into the engine and controls the spark and may also interact with ABS and transmission modules.
Jul 8, 2008 at 11:19 PM
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