GM04 2691 1988 1989 Y AUTOMATIC TRANSMISSION MD8 THM700 R4 A T CONTROL VALVE 1990 1991 Y AUTOMATIC TRANSMISSION MD8 HM 4L60 CONTROL VALVE 301 N S VALVE T V MOD DN SHFT 1 4 302 N S SPRING T V MOD DN SHFT VLV 1 303 N S VALVE T V MOD UPSH FT 1 304 N S SPRING T V MOD UPSHIFT VLV 1 305 N S SLEEVE CONVR CLU THROT VLV 1 4 306 N S SPRING CONVR CLU THROT VLV 1 4 307 N S VALVE CONVR CLU THROT 1 4 308 N S VALVE CONVR CLU SHFT I 4 309 N S SLEEVE 3 4 THROT VLV 1 310 N S SPRING 3 4 THROT VLV 1 311 N S VALVE 3 4 THROT 1 Q 312 N S VALVE 3 4 SHFT 1 313 N S SLEEVE 2 3 THROT VLV 1 314 N S SPRING 2 3 TH ROT VLV 1 315 N S VALVE 2 3 THROT 1 316 N S VALVE 2 3 SHFT 1 317 N S SLEEVE 1 2 TH ROT VLV 1 318 N S SPRING 1 2 THROT VLV 1 319 N S VALVE 1 2 THROT 1 322 N S VALVE 1 2 SHFT 1 323 N S SLEEVE THROT VLV PLGR 1 324 N S PLUNGER THROT VLV 1 325 N S SPRING THROT VLV 1 326 N S VALVE TH ROT 1 328 N S VALVE 3 4 RLY 1 329 N S VALVE 4 3 SEOUENCE 1 330 N S SPRING 4 3 SEQUENCE VLV 1 331 N S SPRING T V LIMIT VLV 1 3 332 N S VALVE T V L MIT 1 333 N S VALVE 1 2 ACCUM 1 334 N S BUSHING 1 2 ACCUM VLV 1 335 N S SPRING 1 2 ACCUM VLV 1 336 N S VALVE LINE BIAS 1 337 N S SPRING LINE BIAS VLV 1 338 N S SPRING 3 2 CONT VLV 1 339 N S VALVE 3 2 CONT 1 340 4 265 VALVE MAN 8642336 341 4 265 PIN COILED SPR 2 75MM X 25MM 4 8628400 342 4 265 PIN VLV BODY COILED SPR RET I 8 654196 343 4 224 SLEEVE SPR RET 8631290 344 4 216 PLUG VLV BORE 14 22 MM DIA 8625546 345 4 105 PLUG D R OIL GAL 8639141 346 N S SWITCH 3RD CLU PRESS NOT REQ D 347 4 265 SWITCH 4 3 PULSE PRESS NOT REO D 348 4 265 SWITCH 4TH CL PRESS 1 PRONG 1988 89 8683502 4 265 SWITCH 4TH CL PRESS 1 PRONG 1990 91 8642473 349 4 265 SWITCH TCC SIG PRESS 1986 PRIOR ONLY 350 4 265 VALVE CONT 1987 7YAM 2 8663722 4 265 VALVE CONT 1987 7YDM 2 8663723 4 265 VALVE CONT 1988 2 8667442 4 265 VALVE CONT 1989 2 8673152 4 265 VALVE CONT 1990 2 8673528 4 265 VALVE CONT W BODY VLV 2 I 8677422 4 265 VALVE CONT W BODY VLV 2 8680177 351 4 265 PLUG T V LIMIT VLV 8647453 352 4 265 PLUG TCC REG VLV BORE 8 634239 354 4 265 PLUG CONVR CLU SHFT VLV BORE 3 4 8654336 355 4 265 PLUG CONVR CLU T V BUSH BORE 3 4 8654337 NOTE 1 PART OF ITEM 350 NOTE 2 SERVICE CONTROL VALVE INCLUDES ALL ITEMS ILLUSTRATED HERE NOTE 3 USED ONLY ON VEHICLES HAVING ECM CONTROL OF T C C APPLY NOTE 4 1989 MODELS DO NOT USE THE CONVERTER CLUTCH TROTTLE VALVE THEREFORE THE TCC BORE IS NOT NEEDED HAS BEEN ELIMANATED Y 1993 GENERAL MOTORS SERVICE PARTS OPERATIONS CHEVROLET 14Y 3 93 4 43 4 000 GROUP