As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER LANDING, LEFT FMC INTERMITTENTLY CUTS OUT INDICATED BY "VTK" FLAG IN ND AND GPWS INOP. GROUNDED - YES. REMOVED AND REPLACED LEFT/HAND FMC COMPUTER REF B737-800 AMM 34-61-02-400-801, OPS NML REF AMM 34-61-00-710-801 AND AMM 34-61-00-800-801.