Cadillac CTS transmission and transfer case input/output shaft failure issues with multiple repairs and costs exceeding 6000 on Cadillac CTS

Some Cadillac CTS owners report experiencing transmission and transfer case input/output shaft failures, which can result in no-forward complaints, stripped splines, and rust damage due to inadequate lubrication. These issues typically necessitate the replacement of the transmission output shaft and the transfer case input shaft, with some repairs requiring an updated output shaft featuring a special O-ring to retain lubricant in the splined area. The costs associated with these repairs can be substantial, often exceeding $6000, depending on the severity of the damage and the specific parts that need replacement.