CRANKSHAFT POSITION (CKP) SENSOR REPLACEMENT REMOVAL PROCEDURE IMPORTANT: Perform the CKP System Variation Learn Procedure whenever the crankshaft position sensor is removed or replaced.
SERVICE PROGRAMMING SYSTEM (SPS) For step by step programming instructions, please refer to the techline information system (TIS) terminal. Review the information below to ensure proper programming protocol. IMPORTANT: DO NOT program a control module unless you are directed by a service procedure or you are directed by a General Motors Corporation service bulletin. Programming a control module at any other time will not permanently correct a customer's concern. It is essential that the Tech 2 and the TIS terminal are both equipped with the latest software before performing service programming system (SPS). Some modules will require additional programming/setup events performed before or after programming. Review the appropriate service information for these procedures. Ensure the following conditions are met before programming a control module: