I MX03 01 1 I NOTE 1 1ST DESIGN CONTROLLER HAS ZICIRCUIT BOARD ECM USED WITH A T MD9 2 39 RATIO PART NUMBER STAMPED POWER STEERING PRESSURE SWITCH IS NOT REQUIRED NOTE 2 2ND DESIGN CONTROLLER HAS 1 CIRCUIT BOARD ECM USED WITH A T MD9 2 39 RATIO PART NUMBER STAMPED ALSO USES POWER STEERING PRESSURE SWITCH WITH A C FOR INPUT TO THE ECM t 1991 GENERAL MOTORS SERVICE PARTS OPERATl0NS OLDSMOBILE 32W 3 000 GROUP 3 108 6 9 1