GM Service Manual Online
For 1990-2009 cars only

Power Steering Control Module Replacement/Reprogramming (Electro-Hydraulic Power Steering)

When the electrical control unit (ECU) is replaced, the following procedures must be performed:

  1. There is no scan tool Reset procedure needed prior to removal of the existing unit.
  2. After replacement, with a scan tool, perform the Program ECU and follow the screen prompts for:
  3. • Program High Speed CAN-Bus Configure
    • Program Code Index