Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2016 Cadillac CTS Base, AWDFACTORY OEM SERVICE PROCEDURE
Programming an Existing Control Module
To program an existing control module, perform the following procedure:
- Install the special tool: EL-49642 SPS Programming Support Tool
- Ignition On/Vehicle in Service Mode.
- Access SPS and follow the on-screen instructions for the control module: K71 Transmission Control Module
- Perform the SPS function: Reprogram ECU
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.