PASSENGER 1984 THM 700 R4 MD8 4 115 4 103 4 224 4 224 4 256 4 122 TRANS OIL OIL ASM CODE CONVERTER CASE PUMP PUMP GOVERNOR SOLENOID 8647397 4PO 8642972 8642956 8647967 8654308 8647038 8654126 8647471 4TS 8642965 8642988 8647968 8667081 8642731 8654123 8647982 8647395 4YF 8642978 8642956 8647967 8654308 8647041 8654129 8654107 4YA 8642965 8642955 8647967 8654308 8647173 8654129 8642904 8647394 4YG 8642965 8642988 8647967 8654308 8642730 8654124 8647982 8647396 4YH 8642968 8642956 8647968 8667081 8647041 8654129 8647391 4YK 8642911 8642988 8647967 8654308 8642731 8654124 8647901 8647392 4YN 8642965 8642988 8647967 8654308 8642731 8654124 8647982 86457393 4YP 8642934 8642988 8647967 8654308 8642731 8654124 8647902 8654096 4YW 8642965 8642955 8647967 8654308 8647173 8654129 8647904 8647415 4Y6 8642911 8642988 8647967 8654308 8654074 8654123 8647901 8647399 4Y7 8642978 8642956 8647968 8667081 8647041 8654123 8647400 4Y8 8633974 8642988 8647968 8667081 8642730 8654123 8647900 8647414 4Y9 8642965 8642955 8647967 8654308 8647173 8654129 8647904 Used on trans built before Julian Date 84 107 Used on trans built on or after Julian Date 84 107 also has letter T following date NOTE Julian Date is part of trans I D number 4 265 4 265 4 265 W SWITCH 4TH SWITCH TRANS VALVE CLUTCH 4 3 ASM CODE CONTROL PRESSURE PULSE 8647397 4PO 8654011 8647471 4TS 8654172 8647395 4YF 8647437 8634475 8654107 4YA 8654073 8634475 8647394 4YG 8654009 8634475 8642346 8647396 4YH 8654002 8634475 8647391 4YK 8647442 8634475 8642346 8647392 4YN 8647444 8634475 8642346 8647393 4YP 8654013 8634475 8642346 8654096 4YW 8654073 8634475 8647415 4Y6 8654005 8642346 8647399 4Y7 8654003 8642346 8647400 4Y8 8654004 8642346 8647414 4Y9 8654073 8634475 8642346 Use plug 444613 1988 GENERAL MOTORS SERVICE PARTS OPERATIONS CHEVROLET 17F 4 000 GROUP 4T 8 REV 6 88