1985-1990 P 4-SPEED MANUAL TRANSMISSION (M20) PART 1 diagram Lt Truck GMC P25/P2500 VAN

1985-1990 P 4-SPEED MANUAL TRANSMISSION (M20) PART 1
PNCPart codeTitleQuantity
0 08672987  OVERHAUL KIT, TRANS (1990)(INCL ITEMS #2,5-6,7,11,16,22-24,29-31,33,38,41-44,46-48,55)(ACDelco #8672987)
0 08672987  OVERHAUL KIT,(INCL ITEMS #2,5-7,11,16,22-24,29-31,33,38,41-44,46-48,55)(ACDelco #8672987)
0 15654381  OVERHAUL KIT, TRANS (1990)(INCL ITEMS #2,5-6,7,11,16,22-24,29-31,33,38,41-44,4*
0 08672945  GASKET KIT, TRANS W/SEALS (INCL ITEMS #33,34,38,54,56,59)
1 TRANSMISSION, ASM (CODE YJY)
1 08672100  TRANSMISSION, ASM (CODE YPY)
1 15589818  TRANSMISSION, ASM
1 15589820  TRANSMISSION, ASM
2 09422666  BEARING, MAIN SHAFT PILOT ROLLER (AS REQD)(*KIT2)
3 03993036  CONE, 3RD & 4TH SPEED GEAR SYNCHRONIZER (2 REQD)
4 03901165  SLEEVE, 3RD & 4TH GR SYNCLUTCH
5 03901166  RING, 3 & 4 SPEED CLUTCH HUB RETAINING(*KIT2)
6 03866358  KEY, 1 & 2,3 & 4 SPEED CLUTCH (6 REQD)(*KIT2)
7 03866359  SPRING, 3 & 4 SPEED CLUTCH KEY (2 REQD)(*KIT2)
8 03901164  HUB, 3 & 4 SPEED CLUTCH
9 03901161  GEAR, 3RD SPEED
10 03932274  BUSHING, 3RD SPEED GEAR
11 03932267  WASHER, 3RD SPEED GEAR THRUST(*KIT2)
12 03901158  GEAR, 2ND SPEED
13 03950367  RING, 2ND SPEED GEAR SYNCHRONIZER
14 03932253  BUSHING, 2ND SPEED GEAR
15 03932265  SHAFT, MAIN
16 03866646  SPRING, 1 & 2 SPEED CLUTCH KEY (2 REQD)(*KIT2)
17 03946776  HUB, 1 & 2 SPEED CLUTCH
18 03901170  GEAR, REVERSE
19 00465455  BUSHING, 1ST SPEED GEAR
21 00476766  GEAR, W/PIN, 1ST SPEED
22 12471606  BEARING, COUNTER GEAR FRT(*KIT1)(ACDelco #RW20-09)
23 12337982  RING, CLUTCH COUNTER GEAR RETAINING(*KIT2)
24 03901153  WASHER, COUNTER GEAR THRUST(*KIT2)
25 08672344  GEAR, W/SPACER, CLUTCH COUNTER(1990)
25 03955570  GEAR, W/SPACER, CLUTCH COUNTER(1985-89)
26 14020811  SPACER, COUNTER GEAR
27 03968038  GEAR, 3RD SPEED COUNTER
28 14053671  GEAR, COUNTER
29 08672404  BEARING, COUNTER GEAR RR(*KIT2)
30 02600236  RING, COUNTER GEAR RR BEARING RETAINING(*KIT2)
31 03866346  RING, COUNTER GEAR RETAINING(*KIT2)
32 03901178  BEARING, MAIN DRIVE GEAR(ACDelco #3901178)
33 12337932  GASKET, MAIN DRIVE GEAR BEARING RETAINER(*KIT1,KIT2)(ACDelco #12337932)
34 03987937  SEAL, MAIN DRIVE GEAR BEARING OIL(*KIT1)
35 03920784  BOLT, MAIN DRIVE GEAR BEARING RETAIN W/LK WA (4 REQD)
36 11561048  BOLT,HEX W/FL WA-3/8-16X.625,.82 OD,GM275 STL, GMW3200 FINISH(BOLT, HFH (3/8-16X5/8, 280M POR)(AS REQD))(AR) AR
37 12547312  COVER, POWER TAKE OFF (2 REQD)(ACDelco #12547312)
38 08672163  GASKET, PWR TAKE OFF COVER (2 REQD)(*KIT1,KIT2)
39 00465453  CASE, W/PLUGS (W/JF9)
39 00465451  CASE, W/PLUGS (EXC JF9)
40 12471607  MAGNET, CHIP COLLECTOR(ACDelco #12471607)
41 03901152  RING, MAIN DRIVE GEAR BEARING RETAINING (2.0 IN. DIA)(*KIT2)
42 03866655  RING, MAIN DRIVE GEAR BEARING RETAINING (3.7 IN. DIA)(*KIT2)
43 08672061  BEARING,W/SLINGER,MAIN DR GR(USED T/W 3901177(ACDelco #8672061)
43 08672061  BEARING, MAIN DRIVE GEAR (INCL #42,44)(1985-90)(*01,KIT2)(ACDelco #8672061)
43 08672405  BEARING, MAIN DRIVE GEAR (W/SLINGER)(1990)(*KIT2)
44 12338118  SLINGER, MAIN DRIVE GEAR BEARING OIL(*KIT2)
45 08672408  GEAR, MAIN DRIVE (17 TEETH)(1990 2ND DES)(*01)
45 08672408  GEAR,TRANS CLU(17 TEETH)(1985-89)(1990 1ST DES)(MUST ALSO REPLACE BEARING W/08672405 & DISCARD OIL SLINGER)
46 03901166  RING, MAIN DRIVE GEAR ROLLER BEARING RET OIL(*KIT2)
47 00465450  WASHER, 1ST SPEED GEAR THRUST(*KIT2)
48 08672404  BEARING, MAIN SHAFT RR (1988-90)(*KIT2)
49 03901141  GEAR, W/BUSHING, REVERSE IDLER
50 03901144  SHAFT, REVERSE IDLER
51 02600236  RING, MAIN SHAFT RR BEARING RETAINING
52 00159908  SCREW, PAN HD C/R MA (10-24X3/8, CAD/ZC)(AS REQD)
53 03866347  CAP, COUNTER GEAR FRT BEARING
54 08672162  GASKET, COUNTER GEAR FRT BEARING CAP(*KIT1)
55 03968034  PLUG, MAGNETIC PIPE(*KIT2)
55 00444746  PLUG, SQ HD FILL & DRAIN (.500-14)(AS REQD)(*KIT2)
56 08672160  GASKET, RR BEARING RETAINER
57 ROTOR, TRANS SPEEDO DRIVE MAGNETIC
58 RETAINER, W/SEAL, RR BEARING
58 15592353  RETAINER KIT, RR BEARING
58 15592354  RETAINER, W/SEAL, RR BEARING
59 15595878  SEAL, U JOINT FRT FLANGE(*KIT1)
60 03915056  FLANGE, U JOINT FRT (TYPE M)(35 SPLINES)
61 03830575  NUT, U JOINT FRT FLANGE LOCK
62 00141242  PIN, DOWEL (3/8X7/8)
63 02059927  BOLT, TRANS COVER(ACDelco #2059927)
64 SENSOR, TRANS SPEED