There are 2 owner-reported powertrain & transmission complaints for the 2015 Cadillac XTSin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
Please note GM PIP5146A...Chatter or Bind Feel on turns... AKA transmission shudder. According to Cadillac dealer in Durham, NC. The car needs it's rear differential replaced; 90,000 miles.. That is happening now. Ally, the extended warranty company, sent a technician to inspect the part. I don't know if the original part is still available. I 1st noticed the problem in Fall 2019. Shop invoice, 62,187miles, reflects differential fluid & filter change which temporarily, partially mitigated the problem for a few years. It never disappeared. I am not sure what the worse case safety scenario is. I never let it get that far.
TRANSMISSION WON'T SHIFT INTO GEAR AFTER SHIFTER IS MOVED WITH ENGINE RUNNING. DASHBOARD INDICATOR SHOWS SELECTED GEARS, BUT TRANSMISSION DOESN'T ENGAGE.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 26, 2026