GM OBD Trouble Code 87

By Jim Taddei, May 1, 2009

EEPROM error (flash memory error)

If the ECM detects an internal fault with the EEPROM code 87 will set. The EEPROM is a special "chip" that is installed in the ECM, based on the particular vehicle configuration.

Fault Code Description

  • 87 - EEPROM error (flash memory error)


  • Engine may not start
  • Poor engine performance

Common Problems

  • Internal fault with EEPROM
  • EEPROM incorrectly installed in ECM

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.
replacing ecm
Do i ha ve to flash or reprogam new ecm
ecm interchange
I have a 2005 cad srx,the number 4 injector is misfiring,and the dealer says its the ecm.i bought a used ecm from a 2...