Cadillac CTS check engine light, no power, stalling issue possibly related to TCM replacement on Cadillac CTS

Some Cadillac CTS owners report experiencing issues such as a check engine light, lack of power, and stalling, which may be related to a Transmission Control Module (TCM) replacement. These problems often arise when the check engine light indicates underlying issues that require attention. Additionally, owners have noted that stalling can stem from various factors, including fuel system problems, ignition issues, or even contaminated fuel. A lack of power in the vehicle is frequently linked to a faulty throttle position sensor or fuel system malfunctions. If the TCM replacement is suspected to contribute to these issues, it is vital to verify that the installation was performed correctly and that the new module is functioning as intended. To effectively address these concerns, some owners recommend running diagnostic trouble codes (DTCs) with an OBD scanner to identify specific problems, as well as checking fuel pressure to rule out any fuel-related issues that might be exacerbating the stalling and power loss.