GM OBD Trouble Code 98

By Jim Taddei, May 1, 2009

Invalid PCM program

If the PCM detects a problem with its software code 98 will be set.

Fault Code Description

  • 98 - Invalid PCM program


  • Engine may not start

Common Problems

  • PCM should be reprogrammed in possible

No comments yet...

Sign in to comment

Related Questions

See what others have asked about this, or visit the Questions page to ask your own question.
I have a 2000 ranger 3.0l flexfuel 4x4. where is the ecm located? and is it easily accessable? thank you for the help!
Where is the ecm located? mine is bad and need to replace it.