1989 SPEEDO GEAR USAGE CHART B CAR NOTE SLEEVE PART NUMBER IS SHOWN ONLY IF SERVICED SEPARATELY WHEN SLEEVE NUMBER IS NOT SHOWN THEN IT IS SERVICED AS PART OF THE ORIVEN GEAR T T S E E T E E COLOR SLEEVE M DRIVE T ORIVEN T OR OR P GEAR H COLOR GEAR H CODE SENSOR ADAPTER RATIO D A 8634934 13 WHITE 25524921 28 YELLOW B 8634935 12 RED D D A R G R G D I E I E A V A V A P TIRE SIZE AXLE TRANS E R E R T N R P225 75 15 2 93 P225 75 15 323 Y 1991 GENERAL MOTORS SERVICE PARTS OPERAT ONS BUlCK 44W 1 4 337 4 144 6 91