1997 GMC Sierra what is a pcm

Tiny
BOWDEN
  • MEMBER
  • 1997 GMC SIERRA
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 280,000 MILES
What is a powertrain control module
Tuesday, July 8th, 2008 AT 9:35 PM

1 Reply

Tiny
DOCHAGERTY
  • MECHANIC
  • 9,601 POSTS
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.
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Tuesday, July 8th, 2008 AT 11:19 PM

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