As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
L PACK ILLUMINATED ON RECALL AFTER START EXTINGUISHES WITH MASTER CAUTION RESET. GROUNDED - YES. REMOVED AND REPLACED LEFT RAM AIR ACTUATOR IAW B737-900 AMM 21-51-21/401. PZTC 1&2 BITE TESTED GOOD W/O FAULTS. LEFT PACK OPS CHECKED NORMAL ON GND.