Will not start after replacing ECM

Tiny
TRAVISJ1988
  • MEMBER
  • 1998 GMC SUBURBAN
  • 5.7L
  • V8
  • 4WD
  • AUTOMATIC
  • 144,000 MILES
I just replaced the ECM and now my truck will not start.
Sunday, March 24th, 2019 AT 12:41 PM

1 Reply

Tiny
JOETECHPRO
  • MECHANIC
  • 705 POSTS
Hey TRAVISJ1988,

The new engine control module will need to be programmed to the vehicle before the vehicle will start.

You will need a scanner with a programming/replacement modules function to do this.

This may need to be done at a GMC dealer.

Regards, Joe
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Sunday, March 24th, 2019 AT 5:32 PM

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