Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
The fuel pressure control module (FPCM) requests this code to be set when it detects the fuel pump circuit is out of specs. In most cases, this is caused by either a bad connection/wiring or a worn fuel pump motor.
If the code came up immediately after working on or near the fuel pump connector, then I would check that first. If OK, then I would replace the fuel pump.
Please let me know if you have any other questions.