As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER DEPARTURE; LANDING GEAR WOULD NOT RETRACT. QRH PROCEDURE C/W INDICATING AIR GROUND SYSTEM OR GROUND SPOILER INTERLOCK VALVE IAW QRH. RETURN TO DTW FOR OVERWEIGHT LANDING AT 129.88. / [01] REMOVED AND REPLACED GROUND SPOILER INTERLOCK CABLE PER M/M 27-62-51;[02] COMPLIED WITH RII