Manual Transmission fit your 1991 GMC C2500

Currently shopping for

1991 GMC C2500

Change Vehicle

Categories Close X

Currently selected

Transmission - Manual

Other Categories

Body Mounting, Air Conditioning, Audio/Entertainment

Brakes

Brakes, Rear Axle, Propeller Shaft, Wheels, Tires

Cab And Body Structure, Mirrors, Doors, Trim, Seat Belts, Wipers

Cooling System, Grille, Oil System

Engine

Frames, Springs, Shocks, Bumpers, Fascias

Front Axle, Front Suspension, Steering

Front End Sheet Metal, Heater

Fuel System, Exhaust, Emission System

Maintenance Parts, Fluids, Capacities, Electrical Connectors

Rear Body Structure, Moldings & Trim, Cargo Stowage

Starter, Generator, Ignition, Electrical, Lamps

Transmission - Automatic

Parts Questions

Sort by:

Recommended

Part No. & Part Description

Price & Qty.

Part No. &
Part Description

SWITCH, Back Up Lamp

14014559
SWITCH, BACK UP SWITCH
$30.46 $16.14
1
Add To Cart
14014559
SWITCH, BACK-UP LAMP
$30.46 $16.14
1
Add To Cart
19152823
SWITCH, BACK UP LAMP
$34.97 $17.62
1
Add To Cart

BEARING, Transmission Countergear

9436775
BEARING, COUNTERSHAFT FRONT (K)(INCLUDE 63)
$18.75 $13.05
1
Add To Cart
12471606
BEARING, COUNTER GEAR FRONT(*KIT2)
$14.39 $8.03
12350936
BEARING, COUNTERSHAFT REAR (C)(INCLUDE 67)
12350939
BEARING, COUNTERSHAFT FRONT (C)(INCLUDE 63)

COVER, Power Take Off Assembly-Transfer Case

12547312
COVER, POWER TAKE OFF (2 REQUIRED)
$17.07 $10.31
1
Add To Cart
12547312
COVER, POWER TAKE-OFF (2 REQUIRED)
$17.07 $10.31
1
Add To Cart

GASKET, Transmission Main Drive Gear Bearing Retainer

12337932
GASKET, MAIN DRIVE GEAR BEARING RETAINER(*KIT1,KIT2)
8672162
GASKET, COUNTER GEAR FRONT BEARING CAP(*KIT1)

SYNCHRONIZER, Transmission Synchronizer

88891103
SYNCHRONIZER, 1ST & 2ND GEAR (INCLUDE 17,21 THROUGH 26)
$90.62 $64.56
1
Add To Cart
88934829
SYNCHRONIZER, 3/4 (1988-91)(INCLUDE 8-12)
$251.17 $189.70
1
Add To Cart
12540300
SYNCHRONIZER, OVER DRIVE GEAR (INCLUDE 74 THROUGH 77)
12540387
SYNCHRONIZER, 5TH/REVERSE (INCLUDE 8-11,27,28)
12542865
SYNCHRONIZER, 3RD & 4TH GEAR (INCLUDE 36 THROUGH 9,41)

BEARING, Transmission Mainshaft Center/Rear

88996720
BEARING, OUTPUT SHAFT (1989 2ND DESIGN W/0CCU,1990-91)(INCLUDE 34-38)
$29.58 $17.87
1
Add To Cart
12544738
BEARING, PILOT
$18.74 $11.74
1
Add To Cart
8672404
BEARING, MAIN SHAFT REAR(*KIT2)
$147.31 $92.54
1
Add To Cart
9418223
BEARING, MAINSHAFT REAR

23049797
STUD, Engine Clutch Release Fork, STUD, CLUTCH FORK BALL (W/STUD)
$53.21 $32.54
1
Add To Cart

8672316
PIN, Transmission Internal Shift Shaft, PIN, SHIFT SHAFT ROLL(*KIT1)
$0.09 $0.06

BOLT, Transmission Case

11092971
BOLT, HEXAGON SOCKET (M8X1.25X50, 12.9 PHOSPHATE ZINC ORGANIC)(AS REQUIRED)
$13.05
1
Add To Cart
2059927
BOLT, ADAPTER TO TRANS (8 REQUIRED)

RING, Transmission Synchronizer

12382857
RING, OVERDRIVE SYNCHRONIZER
$59.12 $37.58
1
Add To Cart
23049986
RING, 3RD & 4TH GEAR SYN RETAINER(44X52X2.0)
$9.51 $7.36
1
Add To Cart
89058652
RING, TRANS SYN RETAINER
$32.98 $19.93
1
Add To Cart
8672050
RING, SYN BLOCKING(2 REQUIRED)
$30.50 $19.38
3950367
RING, 2ND SPEED GEAR SYNCHRONIZER
15635216
RING, MAINSHAFT SYNCHRONIZER (INNER)(2 REQUIRED)
15635219
RING, MAINSHAFT SYNCHRONIZER (MIDDLE)(2 REQUIRED)
15635233
RING, 3RD GEAR RETAINING
15635274
RING, 5TH GEAR SYN RETAINER(CLUTCH GEAR RETAINING)
15637274
RING, MAINSHAFT SYNCHRONIZER (OUTER)(2 REQUIRED)
23049724
RING, 5TH & REV GEAR SYN RETAINER(52X60X2.2)
23049725
RING, 5TH & REV GEAR SYN RETAINER(52X60X2.15)
23049726
RING, 5TH & REV GEAR SYN RETAINER(52X60X2.1)
23049727
RING, 5TH & REV GEAR SYN RETAINER(52X60X2.05)
23049987
RING, 3RD & 4TH GEAR SYN RETAINER(44X52X1.95)(4.416)
23049988
RING, 3RD & 4TH GEAR SYN RETAINER(44X52X1.90)(4.416)
23049989
RING, 3RD & 4TH GEAR SYN RETAINER(44X51X1.85)(4.416)
3901166
RING, 3RD & 4TH SPEED CLUTCH HUB RETAINING(*KIT2)
8672914
RING, W/BALL & WASHER(*KIT1,KIT2)

88996721
BEARING, Mainshaft Front Pilot and Main Drive Gear, BEARING, INPUT SHAFT (1991)(INCLUDE 215-218)
$147.61 $47.08
1
Add To Cart

89059625
PIPE, Transfer Case, PIPE, VENT
$12.56 $7.98
1
Add To Cart

BEARING, Transmission Reverse Idler Gear/Shaft

8672201
BEARING, NEEDLE REVERSE IDLER (1989 2ND DESIGN W/0CCU,1990-91)
12350042
BEARING, TRANS REVERSE IDLER GEAR (2 REQUIRED)
12382905
BEARING, REVERSE GEAR
23049741
BEARING, NEEDLE (1988,1989 1ST DESIGN W/9CCU)(3 REQUIRED)

PIN, Transmission Internal Shift

2462229
PIN, SHIFT ROD INTERLOCK
23049829
PIN, 3RD & 4TH SHIFT INTERLOCK
2462226
PIN, 5TH SHIFT FORK(SHIFT ROD INTERLOCK (5 REQUIRED))(*KIT1,KIT2)
2462226
PIN, 5TH SHIFT FORK(OVERDRIVE SHIFT ROD)
3901139
PIN, SHIFT INTERLOCK (.185X.63)

HUB, Transmission Synchronizer

3901164
HUB, 3RD & 4TH SPEED CLUTCH
$135.23 $49.28
1
Add To Cart
12547203
HUB, 1ST & REV GEAR CLUTCH
3946776
HUB, 1ST & 2ND SPEED CLUTCH

BEARING, Transmission Countershaft Gear

8677696
BEARING, COUNTERSHAFT (1991)(PART OF 201)
$63.15 $38.16
1
Add To Cart
8677696
BEARING, COUNTERSHAFT (1991)(INCLUDE 202,203)
$63.15 $38.16
1
Add To Cart
8672404
BEARING, COUNTER GEAR REAR(*KIT2)
$147.31 $92.54
1
Add To Cart

14037974
RING, Transmission First/Reverse Gear, RING, CLUTCH GEAR RETAINING (NICKEL PLATED OR BRIGHT 15207)

BUSHING, Transmission Shift Shaft Detent

23049803
BUSHING, SHIFT SHAFT DETENT(PART OF 200)(2 REQUIRED)
23049803
BUSHING, SHIFT SHAFT DETENT(ALSO PART OF 200)(2 REQUIRED)

PLUG, Transmission Shift Shaft Detent

23049887
PLUG, SHIFT SHAFT DETENT
9421743
PLUG, SHIFT SHAFT DETENT
$8.46 $5.37

9422666
ROLLER, Transmission Mainshaft Center/Rear, ROLLER, MAIN SHAFT PILOT (17 REQUIRED)(*KIT2)

BEARING, Transmission Gear

12382813
BEARING, OVERDRIVE GEAR (2 REQUIRED)
$56.58 $35.96
1
Add To Cart
12549371
BEARING, TRANS GEAR
$56.58 $28.06
1
Add To Cart
23049697
BEARING, NEEDLE (3RD GEAR)
$17.08 $10.32
1
Add To Cart
8672405
BEARING, W/SLINGER, MAIN DRIVE GEAR (INCLUDE 42,44)(1990 2ND DESIGN,1991)(*KIT2)
$148.85 $54.24
1
Add To Cart
12351648
BEARING, MAIN DRIVE GEAR
12549372
BEARING, 3RD SPEED GEAR (2 REQUIRED)
23049693
BEARING, NEEDLE (5TH GEAR)

SENSOR, Computer Control Sensors

12382860
SENSOR, SPEED (INCLUDE "O" RING)
$81.37 $41.91
1
Add To Cart
12382860
SENSOR, VEHICLE SPEED (2ND DESIGN 1989 W/TRANS CODE OCCU,1990-91)(INCLUDE 315)
$81.37 $41.91
1
Add To Cart
19108029
SENSOR, TRANS SPEED
24232617
SENSOR, VEHICLE SPEED (1988, 1ST DESIGN 1989 W/TRANS CODE 9CCU)(INCLUDE 315)

SEAL, Transmission Main Drive

23049814
SEAL, INPUT SHAFT(PART OF 205)(*KIT1)
$12.01
1
Add To Cart
12386077
SEAL, MAIN DRIVE GEAR BEARING CAP(ALSO PART OF 59)
$4.06 $2.58
1
Add To Cart
3987937
SEAL, MAIN DRIVE GEAR BEARING OIL(*KIT1,KIT2)

MAGNET, Transmission Case

24239049
MAGNET, CASE CHIP CARRIER
$12.11 $7.68
1
Add To Cart
12471607
MAGNET, CHIP COLLECTOR
$13.57 $8.63
1
Add To Cart

PLUNGER, Transmission Shift Shaft Detent

12475440
PLUNGER, SHIFT SHAFT DETENT
$9.70 $6.17
1
Add To Cart
3864968
PLUNGER, REVERSE SHIFT FORK

12547173
BEARING, Transfer Case, BEARING, REAR OIL SEAL RETAINER
$29.49 $25.95
1
Add To Cart

PLUG, Transmission Case

23049841
PLUG, OIL DRAIN (M24X1.5)
$10.15 $5.82
1
Add To Cart
3738198
PLUG, VENT HOLE (1988)
$23.73
1
Add To Cart
15637304
PLUG, TRANS OIL DRAIN
3968034
PLUG, MAGNETIC PIPE(*KIT2)

3932253
BUSHING, Transmission Second Speed Gear, BUSHING, 2ND SPEED GEAR
$50.15 $24.87
1
Add To Cart

3932274
BUSHING, Transmission Main Shaft Gear Retaining, BUSHING, 3RD SPEED GEAR
$72.59 $35.98
1
Add To Cart

457232
BEARING, Front Wheel Inner, BEARING, COUNTERSHAFT REAR (K)(INCLUDE 67)
$50.52 $29.25
1
Add To Cart

TRANSMISSION KIT, Transmission Overhaul

8672987
TRANSMISSION KIT, MANUAL(SERVICE OVERHAUL)(1990-91)(INCLUDE 2,5-7,11,16,22-24,29-31,33,34,38,41-44,46-48,55,65)
$418.97 $262.69
1
Add To Cart
8672987
TRANSMISSION KIT, MANUAL(SERVICE OVERHAUL)(1988-89)(INCLUDE 2,5-7,16,22-24,29-31,33,34,38,41-44,46-48,55,65)
$418.97 $262.69
1
Add To Cart
8672952
TRANSMISSION KIT, MANUAL (INCLUDE 120,122,132,209,319,323,324)(*01)
8672952
TRANSMISSION KIT, MANUAL (INCLUDE 6,9,10,40,42,52)(*01)

12549349
WASHER, Transmission Shaft and 2nd Speed Gear, WASHER, THRUST 2ND GEAR (1991)

15635329
BALANCER, Propeller, BALANCER,PROPELLER SHAFT

3866358
INSERT, Transmission Synchronizer, INSERT, 1ST & 2ND, 3RD & 4TH SPEED CLUTCH (6 REQUIRED)(*KIT2)

GASKET, Back Up Lamp

3929530
GASKET, BACK UP LAMP SWITCH
3929530
GASKET, BACK-UP LAMP SWITCH

WASHER, Transmission Countershaft Gear

15635262
WASHER, COUNTERSHAFT THRUST (FLAT, 1.58X2.66X.35)
$43.44 $34.11
1
Add To Cart
12337982
WASHER, CLUTCH COUNTER GEAR RETAINING (1.940X.00X.111)(*KIT2)
3901153
WASHER, COUNTER GEAR THRUST(*KIT2)

WASHER, Transmission Rear Bearing & Mainshaft

12382783
WASHER, MAINSHAFT NUT
$3.58
1
Add To Cart
15635326
WASHER, MAINSHAFT NUT (1.52X2.2X.17)(NO LONGER REQ'D)
335366
WASHER, MAIN SHAFT BEARING LOCK(*KIT2)

12382814
SPACER, Transmission Rear Bearing & Mainshaft, SPACER, MAINSHAFT GEAR BEARING
$4.56 $2.97
1
Add To Cart

SHAFT, Transmission Mainshaft

8672615
SHAFT, OUTPUT (1991)
$229.73 $154.35
1
Add To Cart
12382817
SHAFT, MAIN (C W/MT8)(USE TOGETHER WITH 12546679 TONE WHEEL)
12382819
SHAFT, MAIN (C W/C5B)(ALSO USE 12546679 TONE WHEEL)
12382861
SHAFT, MAIN (K)
14020859
SHAFT, MAIN (32 TEETH OUTPUT)(K)
3932265
SHAFT, MAIN (35 TEETH OUTPUT)(C)

PAD, Transmission Internal Shift Fork

12382866
PAD, SHIFT FORK SIDE (6 REQUIRED)
$3.76 $2.39
1
Add To Cart
15635277
PAD, SHIFT FORK CENTER (3 REQUIRED)

12382897
SPRING, Transmission Shift Shaft Detent, SPRING, SHIFT SHAFT DETENT (1989 2ND DESIGN W/0CCU,1990-91)
$9.40 $4.91
1
Add To Cart

GEAR, Transmission Main Drive(Clutch)

12386535
GEAR, MAIN DRIVE CLUTCH DIG
$31.09 $23.92
1
Add To Cart
12547204
GEAR, OVERDRIVE CLUTCH
8672408
GEAR, TRANS CLUTCH(17 TEETH)(1988-89,1990 1ST DESIGN)(MUST ALSO USE 08672405 BEARING & DISCARD OIL SLINGER)
8672408
GEAR, MAIN DRIVE (17 TEETH)(1990 2ND DESIGN,1991)(*01)

SEAL, Rear Bearing Retaining

23049496
SEAL, OUTPUT SHAFT OIL(*KIT1)
$16.55 $10.00
1
Add To Cart
12478060
SEAL, EXTENSION OIL

EXTENSION, Transmission Case

12546147
EXTENSION, TRANS(K MODEL)(4.412)
$435.90 $275.80
1
Add To Cart
15635280
EXTENSION, TRANS(C1,2,309)(C310,314 W/C7A,C7E)

SHAFT, Transmission Internal Shift Shaft

12548394
SHAFT, 5TH SHIFT LUGGAGE & FORK
$37.86 $24.06
1
Add To Cart
8672013
SHAFT, 3RD & 4TH SHIFT FORK
8672119
SHAFT, 1ST & 2ND SHIFT(INCLUDE 101,102,105)
8672260
SHAFT, 3RD & 4TH SHIFT(1988,1989 1ST DESIGN W/9CCU)(INCLUDE 107-109)
8672260
SHAFT, 3RD & 4TH SHIFT(1989 2ND DESIGN W/0CCU,1990-91)(INCLUDE 107-109)
8672310
SHAFT, SHIFT (INCLUDE 117,119,121)

SHAFT, Transmission Reverse Idler

12548476
SHAFT, REVERSE IDLER GEAR
$30.94 $21.53
1
Add To Cart
3901144
SHAFT, REVERSE IDLER
8672200
SHAFT, REVERSE IDLER (1989 2ND DESIGN W/0CCU,1990-91)

GEAR, Transmission Countershaft

15637296
GEAR, COUNTERSHAFT OVERDRIVE (ALSO PART OF 91)
$334.30 $165.78
1
Add To Cart
14053671
GEAR, COUNTER
3968038
GEAR, 3RD COUNTER

PIN, Transmission Shift Shaft Detent

15590194
PIN, SHIFT FORK DETENT (AS REQUIRED)
$12.60
1
Add To Cart
9416325
PIN, SPRING TRANS SHIFT TOWER (2 REQUIRED)

SEAL, Transmission Extension

15595878
SEAL, U JOINT FRONT FLANGE(MANUAL TRANSMISSION(M20))(*KIT1)
$16.90 $12.60
1
Add To Cart
88958818
SEAL, EXTENSION OIL
$59.12 $35.72
1
Add To Cart

15619131
PLUG, Transmission Internal Shift, PLUG, SHIFT BAR HOUSING EXPANSION (7/8 ODX5/64 THICK)(3 REQUIRED)
$6.75
1
Add To Cart

15635217
RING, Transmission Rear Bearing & Mainshaft, RING, MAINSHAFT BEARING RETAINER (4 REQUIRED)
$13.05
1
Add To Cart

BEARING, Transmission Main Drive Gear(Clutch)

8680487
BEARING, NEEDLE (1ST,2ND & REV GEARS)(3 REQUIRED)
$26.11 $16.37
1
Add To Cart
15635245
BEARING, MAIN DRIVE GEAR(ALSO PART OF 92)
8672061
BEARING, W/SLINGER, MAIN DRIVE GEAR (1988-89,1990 1ST DESIGN)(*KIT2)

WHEEL, Speedometer Drive

23046538
WHEEL, VEHICLE SPEED SENSOR RELUCTOR
$53.68
1
Add To Cart
8672207
WHEEL, VEHICLE SPEED SENSOR RELUCTOR OCCU,OKDU (1989 2ND DESIGN W/0CCU,1990-91)
$8.89 $5.64
1
Add To Cart
15635279
WHEEL, SPEEDOMETER DRIVE MAGNETIC
23049717
WHEEL, VEHICLE SPEED SENSOR RELUCTOR9CCU,9KDU (1988,1989 1ST DESIGN W/9CCU)

RING, Transmission Rear Bearing and Mainshaft

15635283
RING, MAIN SHAFT REAR BEARING RETAINER
$8.31 $4.27
1
Add To Cart
2600236
RING, MAIN SHAFT REAR BEARING RETAINING
3866655
RING, MAIN DRIVE GEAR BEARING RETAINING (3.7 INCH DIAMETER)(*KIT2)
3901152
RING, MAIN DRIVE GEAR RETAINING (2.0 INCH DIAMETER)(*KIT2)

15635285
BOLT, Transmission Mount and Support, BOLT, RETAINER (M10X1.5X333.2,27.5)(8 REQUIRED)
$0.18 $0.11
1
Add To Cart

15635286
YOKE, Universal Joint and Power Divider, YOKE, PROPELLER SHAFT (INCLUDE 25)
$493.42 $342.69
1
Add To Cart

WASHER, Transmission Mount and Support

15635289
WASHER, TRANS(MAINSHAFT)
$2.76 $1.76
1
Add To Cart
15635289
WASHER, TRANS (1.0X1.52X.162)(AS REQUIRED)
$2.76 $1.76
1
Add To Cart

15635332
SPACER, Speedometer Drive, SPACER,VEHICLE SPEED SENSOR(4.343)
$184.82 $116.94
1
Add To Cart

15635333
EXTENSION, Transmission Case Extension, EXTENSION,TRANS(C310,314 W/C5B)(C318)
$787.58 $127.65
1
Add To Cart

SHIM, Transmission Main Shaft Gear Retaining

15636196
SHIM, MAIN SHAFT BEARING(.0176-.0186)(AS REQUIRED)(4.412)
$9.21 $7.51
1
Add To Cart
15636198
SHIM, MAIN SHAFT BEARING(.0231-.0241)(AS REQUIRED)(4.412)
$9.21 $7.51
1
Add To Cart
15636199
SHIM, MAIN SHAFT BEARING(.0253-.0263)(AS REQUIRED)(4.412)
$9.21 $7.51
1
Add To Cart
15636201
SHIM, MAIN SHAFT BEARING(.0297-.0307)(AS REQUIRED)
$13.05
1
Add To Cart
15636195
SHIM, MAIN SHAFT BEARING(.0165-.0175)(AS REQUIRED)
15636197
SHIM, MAIN SHAFT BEARING(.0209-.0219)(AS REQUIRED)
15636200
SHIM, MAIN SHAFT BEARING(.0275-.0285)(AS REQUIRED)
15636202
SHIM, MAIN SHAFT BEARING(.0320-.0330)(AS REQUIRED)

SHIM, Transmission Countershaft Gear

15636208
SHIM, COUNTER GEAR BEARING(.0150-.0160)(AS REQUIRED)
$9.21 $3.38
1
Add To Cart
15636210
SHIM, COUNTER GEAR BEARING(.0194-.0204)(AS REQUIRED)
$9.21 $3.38
1
Add To Cart
15636212
SHIM, COUNTER GEAR BEARING(.0238-.0248)(AS REQUIRED)
$9.12 $3.33
1
Add To Cart
15636213
SHIM, COUNTER GEAR BEARING(.0260-.0270)(AS REQUIRED)(4.423)
$9.21 $7.51
1
Add To Cart
15636207
SHIM, COUNTER GEAR BEARING(.0128-.0138)(AS REQUIRED)(4.423)
15636209
SHIM, COUNTER GEAR BEARING(.0172-.0182)(AS REQUIRED)(4.423)

15636211
SHIM, Transmission Countergear, SHIM,COUNTER GEAR BEARING(.0216-.0226)(AS REQUIRED)(4.423)
$9.14 $7.45
1
Add To Cart

GEAR, Transmission Second Speed

23049698
GEAR, 2ND SPEED (1988-90)(*02)
$129.03 $89.78
1
Add To Cart
15637281
GEAR, MAINSHAFT 2ND SPEED (CK1,2,3)
3901158
GEAR, 2ND SPEED
8672629
GEAR, 2ND SPEED (1991)

15637285
STRUT, Transmission Synchronizer, STRUT, TRANS 3RD & 4TH GEAR SYN (4 REQUIRED) (ALSO PART OF 93)
$3.80 $2.42
1
Add To Cart

LEVER, Transmission Rail End

8672979
LEVER, SHIFT SHAFT (REMANUFACTURE)(1988-89)(INCLUDE 230)(*02)
$18.75 $13.05
1
Add To Cart
15637305
LEVER, GEAR SHIFT STUB(*01)

SPRING, Transmission Synchronizer

15637912
SPRING, SYNCHRONIZER (4 REQUIRED) (ALSO PART OF 93)
$13.05
1
Add To Cart
15637912
SPRING, SYNCHRONIZER (3 REQUIRED) (ALSO PART OF 91)
$13.05
1
Add To Cart
15637912
SPRING, GEAR SYNCHRONIZER (ALSO PART OF 92)
$13.05
1
Add To Cart
3866359
SPRING, 3RD & 4TH SPEED CLUTCH KEY (2 REQUIRED)(*KIT2)
$12.60
1
Add To Cart
3866646
SPRING, 1ST & 2ND SPEED CLUTCH KEY FRONT & REAR (2 REQUIRED)(*KIT2)

15665236
CONE, Transmission Clutch Gear, CONE,INPUT SHAFT BEARING
$62.85 $32.35
1
Add To Cart

23049633
RETAINER, Transmission Shift Shaft Lever Rod Idler, RETAINER, OUTPUT SHAFT BEARING (1988,1989 1ST DESIGN W/9CCU)(*02)
$18.75 $13.05
1
Add To Cart

GEAR, Transmission Third & Fourth Gear

3901161
GEAR, 3RD SPEED
$272.83 $135.30
1
Add To Cart
88934831
GEAR, 3RD SPEED (1991)
$87.27 $55.46

3901165
SLEEVE, Transmission Synchronizer, SLEEVE, 3RD & 4TH SPEED
$207.81 $75.71
1
Add To Cart

3920784
BOLT, Transmission Front, BOLT, W/LOCK WASHER, MAIN DRIVE GEAR BEARING RETAINER (4 REQUIRED)
$12.60
1
Add To Cart

3993036
CONE, Transmission Synchronizer, CONE, 3RD & 4TH SPEED GEAR SYNCHRONIZER (2 REQUIRED)
$82.84 $41.09
1
Add To Cart

VENT, Transmission Case

8672242
VENT, COMPLETE (1991)
$9.59 $7.82
1
Add To Cart
8652580
VENT, TRANS

8672923
BALL, Transmission Shift Shaft Detent, BALL, W/SPRING DETENT (ALSO PART OF 200,300)(INCLUDE 324)(*KIT1)
$26.18
1
Add To Cart

HOUSING, Transmission Shift Control Shaft

8672973
HOUSING, REAR (COMPLETE)(REMANUFACTURE)(1988-89)(INCLUDE #308,309,318,323)(FOR SERVICE USE REMANUFACTURE TRANSMISSION)
$146.28 $101.79
1
Add To Cart
8672973
HOUSING, COMPLETE REAR (REMANUFACTURE)(1988-89)(FOR SERVICE USE REMANUFACTURE TRANSMISSION)
$146.28 $101.79
1
Add To Cart

11513033
PIN, Coiled Spring, PIN, COILED SPRING (M6.35X35,1070,PLAIN)(ALSO PART OF 106)(AS REQUIRED)

12338118
SLINGER, Transmission Main Drive Gear Bearing, SLINGER, MAIN DRIVE GEAR BEARING OIL (1988-89,1990 1ST DESIGN)(*KIT2)

12376615
LEVER KIT, Transmission Gear Shift Control, LEVER KIT,SHIFT

NUT, Transmission Rear Bearing and Mainshaft

12377811
NUT, MAINSHAFT (1.5-18X.52.24)
15535364
NUT, MAINSHAFT

WASHER, Transmission Reverse Idler Gear

12382812
WASHER, REVERSE IDLER GEAR (FLAT 099X1.76X.09)(2 REQUIRED)
8672203
WASHER, REV IDLER GEAR THRUST(SPECIAL)(1989 2ND DESIGN W/0CCU,1990-91)(*KIT1)

12382815
SPACER, Transmission Main Shaft Gear Retaining, SPACER, MAINSHAFT GEAR

12388448
NUT, Hexagon Flange Lock, NUT, SPECIAL BEARING (1 9/16-18)(4 SLOTS)(ROUND)(AS REQUIRED)

RETAINER, Transmission Clutch Gear

12388895
RETAINER, INPUT SHAFT BEARING((INCLUDE 206-209)(1ST DESIGN: W/TRANS BROADCAST CODE OF CAU,CCU,CHU,KDU,KMU,UEU,UJU))(1991)
12388896
RETAINER, INPUT SHAFT BEARING((INCLUDE 206-209)(2ND DESIGN: W/TRANS BROADCAST CODE OF UMU,UNU,UPU,URU,UXU,UYU,UZU))(1991)

12475007
PLATE, Transmission Rear Bearing and Mainshaft, PLATE, MAINSHAFT BEARING RETAINING

SHAFT, Transmission Countershaft

12542557
SHAFT, COUNTER GEAR
12542557
SHAFT, TRANS COUNTER
8677746
SHAFT, COUNTER (1991)(INCLUDE 55)

12542558
KEY, Transmission Countergear, KEY, COUNTER GEAR (.031"WIDTH,1.35 LENGTH,.4"HEIGHT)(2 REQUIRED)

CASE, Transmission Case

12542903
CASE, TRANS
465451
CASE, W/MAGNET & PLUGS

GEAR, Transmission First/Reverse Gear

12543818
GEAR, REVERSE (1991)
12543818
GEAR, REVERSE SPEED(1991)
12543819
GEAR, 1ST SPEED (1991)
15637279
GEAR, MAINSHAFT 1ST SPEED (INCLUDE 15)
15637292
GEAR, MAINSHAFT REVERSE SPEED
3901170
GEAR, REVERSE
476766
GEAR, W/PINION, 1ST SPEED

GEAR,Fourth & Fifth Gear

12547205
GEAR, MAINSHAFT 3RD SPEED (INCLUDE 34)
8672616
GEAR, 5TH SPEED (1991)

FORK, Transmission Internal Shift

12547836
FORK, OVERDRIVE
15590189
FORK, 3RD & 4TH SHIFTER
8672001
FORK, 1ST & 2ND SHIFTER
8672665
FORK, TRANS REVERSE SHIFT

COVER, Transmission Case

12548459
COVER, TRANS
8672011
COVER, TRANS
8672111
COVER, TRANS

14020811
SPACER, Transmission Countershaft Gear, SPACER, COUNTER GEAR (1.56 INCH LONG)

14071774
NUT, Transmission Internal Shift, NUT, HEXAGON JAM (M16X1.5X8, 510M PLAIN)(ALSO PART OF 136)

BEARING, Transmission Internal Shift Shaft

14080583
BEARING, SHIFT RAIL (1-2,3-4,5)(ALSO PART OF 300)
23049549
BEARING, DETENT PLUNGER (ALSO PART OF 200)(3 REQUIRED)

15548812
PIPE, Transmission Case, PIPE, TRANS VENT (1988)

15590193
PIN, Transmission Interlock, PIN, SHIFT INTERLOCK (.37X.75)(AS REQUIRED)

15592354
RETAINER, Transmission Case, RETAINER, REAR BEARING, W/PINION (K)

15597793
ADAPTER, Transfer Case, ADAPTER, TRANSFER CASE

15635196
BUSHING, Transmission Rail End, BUSHING, OVERDRIVE (2 REQUIRED)

15635197
CAP, Transmission Countergear, CAP, COUNTER GEAR BEARING

15635200
LUG, Transmission Internal Shift, LUG, OVERDRIVE

GEAR, Transmission Reverse Idler

15635201
GEAR, REVERSE IDLER
3901141
GEAR, W/BUSHING, REVERSE IDLER
8672202
GEAR, REVERSE (24T)(2ND DESIGN 1989 W/0CCU,1990)

15635203
SPACER, Transmission Reverse Idler Gear/Shaft, SPACER, REVERSE IDLER GEAR BEARING

WASHER, Transmission Third & Fourth Gear

15635232
WASHER, 3RD GEAR THRUST FLAT (1.9X3.28X.188)
3932267
WASHER, 3RD SPEED GEAR THRUST

WASHER, Transmission First/Reverse Gear

15635252
WASHER, REVERSE GEAR THRUST (FLAT 1.88X3.5X.27)
23049744
WASHER, THRUST (SPECIAL)(M40.1X57X4.95)(1988,1989 1ST DESIGN W/9CCU)(*KIT1)

15635261
BOLT, Transmission Main Shaft Gear Retaining, BOLT, DRIVE GEAR BEARING RETAINER (ALSO PART OF 59)(4 REQUIRED)

15635267
RETAINER, Transmission Countershaft Gear, RETAINER,COUNTER GEAR REAR BEARING(UPC/FNA: RETAINER,COUNTER GEAR REAR BEARING)(REAR)(4.423)

15635271
SPACER,Fourth & Fifth Gear, SPACER, OVERDRIVE GEAR BEARING

15635278
GEAR, Transmission Mainshaft, GEAR, MAINSHAFT OVERDRIVE

PIN, Transmission Case

15635284
PIN, TRANS CASE LOCATING(2 REQUIRED)
15635315
PIN, COVER (DIAMETER 468, LEN .485)(2 REQUIRED)

15635311
BOLT, Transmission Shift Shaft Detent, BOLT, REVERSE INHIBITOR CAM (2 REQUIRED)

SLEEVE, Transmission Shift Shaft Detent

15637291
SLEEVE, OVERDRIVE SYNCHRONIZER (ALSO PART OF 91)
15637291
SLEEVE, REVERSE SHIFT SHAFT DETENT SPRING

SHAFT, Transmission Main Drive(Clutch)

15637293
SHAFT, INPUT
88959246
SHAFT, INPUT (1991)

PLUG

15637304
PLUG, AUTO SQUARE HEAD PIPE (3/4X14 STEEL ZINC COATED (DIPPED OR PLATED))(AS REQUIRED)
23049822
PLUG, CUP (15.15 OUTSIDE DIAMETER,5 THICK,STEEL,ZINC COATED (DIPPED OR PLATED))(AS REQUIRED)

15637307
CAP, Transmission Control Lever, CAP, MASTER CONTROL HOUSING(*01)

15662923
BOOT, Transmission Control Lever, BOOT, MANUAL TRANSMISSION CONTROL LEVER

15662923
BOOT, Floor Mounted Control Lever, BOOT, CONTROL LEVER(*01)

15665238
RETAINER, Transmission Main Drive Gear Bearing(Clutch), RETAINER, MAIN DRIVE GEAR BEARING (INCLUDE 58,60,61)

15677601
PLUG, Engine Clutch Housing, PLUG, CLUTCH FORK ACCESS HOLE

TRANSMISSION, Manual (4 Speed)

15691901
TRANSMISSION, COMPLETE (K1,2,3)
24209895
TRANSMISSION, ASM (REMANUFACTURE)(CODE 1UMU)
24209895
TRANSMISSION, ASM (CODE GKB)
24209895
TRANSMISSION, ASM (REMANUFACTURE)(CODE GKB,9CCU,0CCU)

15691902
TRANSMISSION, Manual(5 Speed), TRANSMISSION, COMPLETE (C1,2,309)(C310,314 W/C7A,C7E)

15691903
TRANSMISSION, Automatic, TRANSMISSION, COMPLETE (C310,314 EXCEPT C7A,C7E)(C318 W/C5B)

19369733
ADHESIVE, Truck Maintenance, ADHESIVE,THREADLOCKER(HIGH-STRENGTH)(HIGH-TEMPERATURE)(RED)(0.20 OUNCE)(ADHESIVE KIT, THREAD LOCK (10 ML)(AS REQUIRED))(AS REQUIRED)
$11.47 $6.39

SPRING, Transmission Interlock

23049477
SPRING, BIAS LOAD TORSION (1988,1989 1ST DESIGN W/9CCU)
3978731
SPRING, REVERSE SHIFT FORK (2 11/32 FREE LENGTH)
551946
SPRING, REVERSE SHIFT LEVER DETENT BALL (AS REQUIRED)
8678655
SPRING, BIAS LOAD TORSION (1989-90 2ND DESIGN W/0CCU)

SOCKET, Transmission Internal Shift

23049485
SOCKET, SHIFT SHAFT ACT (INCLUDE 124-128)(1988-90)
8677555
SOCKET, SHIFT SHAFT ACT (INCLUDE 124-128)(1991)

23049494
BEARING, Transmission Clutch Gear, BEARING,INPUT SHAFT(INCLUDE 215-218)

23049525
NUT, NUT, HEXAGON JAM (M16X1.5X8,4T, PLAIN, LH THREAD)(AS REQUIRED)

GASKET, Transmission Case

23049572
GASKET, SHIFT HOUSING(*KIT1)
8672187
GASKET, COVER

23049746
RING, Transmission Reverse Idler Shaft, RING,REV IDLER GEAR RETAINER(SNAP(INSIDE DIAMETER 36.5MM,O.D. 40.5MM,1.95MM UP TO 2.0MM THICK)(*KIT1)

23049747
RETAINER, Transmission Reverse Idler Gear, RETAINER,REV IDLER GEAR SHAFT

23049817
BUSHING, Transmission Internal Shift Shaft, BUSHING,SHIFT SHAFT(SHIFT SHAFT)(ALSO PART OF 300)

23049843
TUBE, Transmission Oil Level, TUBE, OIL DELIVERY

23049866
SEAT, Transmission Internal Shift, SEAT, BIAS SPRING & SLEEVE

23049884
PLUG,Fourth & Fifth Gear, PLUG, 5TH & REVERSE DETENT

23049899
ROLLER, Transmission Shift Shaft Detent, ROLLER, SHIFT SHAFT DETENT (4 REQUIRED)

2458324
SEAT, Transmission Control Lever, SEAT, CONTROL LEVER SPRING(*01)

RING, Transmission Countershaft Gear

2600236
RING, COUNTER GEAR REAR BEARING RETAINING(*KIT2)
3866346
RING, COUNTER GEAR RETAINING(*KIT2)

274621
RING, RETAINER, PINION STRADDLE BEARING LOCK (AS REQUIRED)

3727182
RETAINER, Transmission Shift Shaft Detent, RETAINER, REVERSE SHIFT FORK PLUNGER

3830575
NUT, Transmission/Propshaft, NUT, U JOINT FRONT FLANGE LOCK(M20)

RING, Transmission Countergear

3866346
RING, CLUTCH COUNTER GEAR RETAINING (1.450X.28X.097)(*KIT2)
8677695
RING, SNAP (ALSO PART OF 210)

3866347
CAP, Transmission Countershaft Gear, CAP, COUNTER GEAR FRONT BEARING

3901166
RING, Transmission Mainshaft Center/Rear, RING, MAIN DRIVE GEAR PILOT BEARING RETAINER OIL(*KIT2)

3901178
RETAINER, Transmission Front, RETAINER,TRANS MAIN DRIVE GEAR BEARING

3915056
FLANGE, Universal Joint and Power Divider, FLANGE, U JOINT FRONT (TYPE M)(MANUAL TRANSMISSION(M20))

456587
PIN, Auxiliary Internal Shift, PIN, SHIFT LEVER PIVOT SPRING (5/16X3/4)(AS REQUIRED)

465450
WASHER, Transmission Main Shaft Gear Retaining, WASHER, 1ST SPEED GEAR THRUST(*KIT2)

465455
BUSHING, Transmission First/Reverse Gear, BUSHING, 1ST SPEED GEAR

SPRING, Transmission Internal Shift

551946
SPRING, 3RD & 4TH SHIFT LEVER DETENT BALL (AS REQUIRED)
8678655
SPRING, BIAS LOAD TORSION (1991)

8655314
BOLT, Computer Control Sensors, BOLT, SPEED SENSOR RETAINER

8672019
STOP, Transmission Internal Shift, STOP, 3RD & 4TH SHIFTER GATE

8672160
GASKET, Transfer Case, GASKET, ADAPTER TO TRANS(*KIT1)

8672163
GASKET, Transmission Power Take-Off, GASKET, POWER TAKE OFF COVER (2 REQUIRED)(*KIT1,KIT2)

8672222
RING, Transmission Shaft and 2nd Speed Gear, RING,2ND GEAR THRUST WASHER RETAINER(AS REQUIRED)

8672243
PLUG, Transmission Countershaft Gear, PLUG,COUNTERSHAFT BEARING(1991)

LEVER, Transmission Internal Shift

8672244
LEVER, SHIFT SHAFT (1990-91)(INCLUDE 230)
8678461
LEVER, SHIFT)(LOWER)

8672247
SUPPORT, Transmission Shift Shaft Detent, SUPPORT, 5TH & REV DETENT CAM (1989 2ND DESIGN W/0CCU,1990-91)(INCLUDE 204,236,240-41)

8672265
RETAINER, Transmission Rear Bearing & Mainshaft, RETAINER,MAIN SHAFT BEARING(C SHAPED)(1989 2ND DESIGN W/0CCU,1990-91)

HOUSING, Engine Clutch Housing

8672597
HOUSING, CLUTCH(1991)(INCLUDE 220,228,242,246,323)
8672597
HOUSING, CLUTCH(1991)

8672645
SPACER, Transmission Internal Shift Shaft, SPACER, INPUT SHAFT BEARING (1991)

8672909
COVER, Transmission Shift Shaft Detent, COVER, DETENT SPRING

8672912
BLOCK, Transmission Internal Shift, BLOCK,1ST & 2ND SHIFT(INCLUDE 104)

8672921
SHIM KIT, Transmission Overhaul, SHIM KIT,MANUAL TRANSMISSION(OUTPUT SHAFT BEARING)

RING KIT, Transmission Main Shaft Gear Retaining

8672928
RING KIT, INPUT SHAFT SNAP (INCLUDE 213)
8672928
RING KIT, OUTPUT SHAFT SNAP
8672928
RING KIT, INPUT SHAFT SNAP(*KIT2)

8672933
IDLER KIT, Transmission Reverse Idler Shaft, IDLER KIT, REVERSE (INCLUDE 40,47,48,52)(*01)

8672945
GASKET KIT, Transmission Overhaul, GASKET KIT, W/SEALS (INCLUDE 33,34,38,54,56,59)

9438486
SCREW, SCREW, PAN HEAD SLOTTED (#10-24X3/8)(AS REQUIRED)

11515755
BOLT, HEXAGON W/CONICAL WASHER (M8X1.25X16, 9.8 PHOSPHATE ZINC ORGANIC)(AS REQUIRED)
$13.05
1
Add To Cart

15531205
WASHER, FLAT,13.4X24.8X2.9,FLATS ON SIDES FOR INSIDE DIAMETER,HARD,PLATE STEEL(AS REQUIRED)
$11.42 $6.37
1
Add To Cart

11501033
NUT, HEXAGON PRVG TORQUE (M10X1.5, 10 CADMIUM)(AS REQUIRED)
$7.37 $4.69
1
Add To Cart

11503867
BOLT, HEXAGON (M6X1X20, PHOSPHATE ZINC ORGANIC 9.8)(ALSO PART OF 237)(AS REQUIRED)
$2.22 $1.40
10
Add To Cart

11092971
BOLT, HEXAGON SOCKET (M8X1.25X50,12.9 PHOSPHATE ZINC ORGANIC)(AS REQUIRED)
$13.05
1
Add To Cart

11561048
BOLT, HEX FLANGED HEAD (3/8-16X5/8, 280M PHOSPHATE ORGANIC)(AS REQUIRED)
$5.10 $3.24
1
Add To Cart

11509417
BOLT, HEXAGON (M6X1X25, 10.9 PHOSPHATE)(ALSO PART OF 237)(AS REQUIRED)
$3.39 $2.15
1
Add To Cart

11509589
BOLT, HEXAGON,M8X1.25X16,FULL THREAD,9.8,PC(AS REQUIRED)
$9.93 $6.29
10
Add To Cart

12338111
PIN, SPRING (3/16X1 1/8, STAINLESS STEEL PLAIN)(TYPE A)(AS REQUIRED)
$3.93 $2.63
10
Add To Cart

444746
PLUG, SQUARE HEAD FILL & DRAIN (1/2-14)(AS REQUIRED)(*KIT2)
$8.62 $5.45
1
Add To Cart

9431704
PIN, THRUST WASHER RETAINING
$11.70 $9.52
1
Add To Cart

9431704
PIN, (1/8X17/64, PLAIN)(AS REQUIRED)
$11.70 $9.52
1
Add To Cart

11509419
BOLT, HEXAGON (M10X1.5X25, 10.9 PHOSPHATE ORGANIC)(AS REQUIRED)

7826284
BALL, 3/8" DIAMETER STEEL(AS REQUIRED)

14080573
PLUG, 3RD & 4TH SHIFT SHAFT HOLE(CUP)(17OD,1 THICK,5 DEEP,1010 STEEL,PC)(AS REQUIRED)

141242
PIN, DOWEL (3/8X7/8)

141242
PIN, DOWEL (3/8X7/8)(AS REQUIRED)

172545
PLUG, EXPANSION (1" TYPE B)(AS REQUIRED)

23047261
BOLT, HEX FLANGED HEAD (3/8X16X3.75, 280M, PLATE STEEL)(AS REQUIRED)

23049820
PLUG, (M12,3 THICK,STEEL,ZINC COATED (DIPPED OR PLATED))(AS REQUIRED)

273937
PIN, SPRING,1/8X1 1/4,STEEL,ZINC COATED(AS REQUIRED)(*KIT1,KIT2)

9442300
SCREW, ,HEXAGON W/WASHER 5/16-18 X 1 PO(AS REQUIRED)(4.720)

Genuine GM Parts, the Right Choice

GMPartsGiant.com offers the wholesale prices for genuine 1991 GMC C2500 parts. Parts like Manual Transmission are shipped directly from authorized GM dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 6 Cyl 4.3L, 8 Cyl 5.0L, 8 Cyl 5.7L, 8 Cyl 6.2L Diesel, 8 Cyl 7.4L. Model Code: C2500 EXTENDED CAB LONG BOX, C2500 EXTENDED CAB STANDARD BOX, C2500 REGULAR CAB.