As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STAB TRIM CH 2 AND MACH TRIM DISENGAGED CLIMBING OUT OF SLC. RAN QRH PROCEDURE. DID NOT RE-ENGAGE. RETURNED TO SLC. REMOVED AND REPLACED HORIZONTAL STABILIZER TRIM UNIT WITH SERVICEABLE UNIT. OPS CHECK SATISFACTORY IAW CRJ MM 27-41-01.