As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMF - ELEVATOR TRIM FROZE ON LEVEL OFF AT 19,000 FEET WHILE EN ROUTE FROM RDD TO SFO. AIRCRAFT DIVERTED TO SMF WITHOUT INCIDENT. MAINTENANCE INSPECTED AND LUBED BOTH ELEVATOR TRIM ACTUATORS AND PERFORMED OPERATIONAL CHECK OF ELEVATOR TRIM SYSTEM. OPERATIONAL CHECK OF ELEVATOR TRIM SYSTEM GOOD. AIRCRAFT RETURNED TO SERVICE. (W)