Engine Assembly-Cylinder Block & Related Parts fit your 2003 Chevrolet Trailblazer EXT 2WD

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2003 Chevrolet Trailblazer EXT 2WD

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Vehicle Options

4-Speed Automatic Transmission, 4L60-E, Electronic; Trailblazer 4 Door EXT

Vehicle Options

4-Speed Automatic Transmission, 4L60-E, Electronic; Trailblazer 4 Door EXT

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Brakes, Rear Axle, Propeller Shaft, Wheels, Tires

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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

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Part No. & Part Description

Price & Qty.

Part No. &
Part Description

SEAL KIT, Engine Rear Main Bearing
89060436
SEAL KIT, CRANKSHAFT REAR OIL(PART OF 518)(REVERSE LIP SEAL,INCLUDE INSTRUCTION SHEET)
Fitting Vehicle Options: ST1(LM4)
$34.84 $22.14
1
Add To Cart
89017621
SEAL KIT, CRANKSHAFT FRONT OIL(FOR USE W/ORIGINAL 2002-03 CRANKSHAFT-SMOOTH HUB BALANCER;2ND DESIGN (12578069)-BALANCER HAS A STEP-ON THE HUB USE W/89017622 SEAL KIT)
- Fitting Vehicle Options: ST1(LL8)
$32.16 $20.45
1
Add To Cart

BOLT, Engine Main Bearing Cap
12560272
BOLT, CRANKSHAFT BEARING CAP(M10X2X102.5)
Fitting Vehicle Options: ST1(LM4)
Require Quantity: 10
Package Quantity: 10
$7.39 $4.69
10
Add To Cart
12556127
BOLT, CRANKSHAFT BEARING CAP(M8X1.25X24)
- Fitting Vehicle Options: ST1(LM4)
- Require Quantity: 10
- Package Quantity: 1
$5.21 $3.31
1
Add To Cart
11569841
BOLT, CRANKSHAFT BEARING CAP(M10X133.5,48.5 THREAD,22.6 OUTSIDE DIAMETER,10.9)
- Fitting Vehicle Options: ST1(LL8)
- Require Quantity: 14
- Package Quantity: 1
$8.17 $5.20
1
Add To Cart

12677836
SENSOR, Engine Oil Pressure/Temperature, SENSOR,ENGINE OIL PRESSURE(MATING CONNECT W/LEADS USE 88988301)
$101.82 $51.32
1
Add To Cart

12646387
CHAIN, Engine Timing, CHAIN,CAMSHAFT TIMING
$96.00 $61.04
1
Add To Cart

12639249
GASKET, Engine Rear Main Bearing, GASKET,CRANKSHAFT REAR OIL SEAL HOUSING(PART OF 518)
$60.16 $40.32
1
Add To Cart

BEARING KIT, Engine Connecting Rod
89017573
BEARING KIT, CONNECT ROD(STD)
Fitting Vehicle Options: ST1(LM4)
Require Quantity: 08
Package Quantity: 1
$24.65 $14.89
1
Add To Cart
89017791
BEARING KIT, CONNECT ROD(INCLUDES 108,109)
- Fitting Vehicle Options: ST1(LL8)
- Require Quantity: 06
- Package Quantity: 1
$27.51 $16.62
1
Add To Cart

PLUG, Engine Oil Distribution
12573460
PLUG, ENGINE BLOCK OIL GALLERY(INCLUDES 110)(15.68MM DIAMETER)(INCLUDES O-RING SEAL(N.S.S.)
Fitting Vehicle Options: ST158(LM4)
$11.09 $6.69
1
Add To Cart
11561430
PLUG, ENGINE BLOCK OIL GALLERY(M16X1.5X23,1010 STEEL,3044GMW.W/ALUMINUM WASHER,SEALANT)
- Fitting Vehicle Options: ST1(LL8)
- Require Quantity: 05
- Package Quantity: 1
$7.35 $4.67
1
Add To Cart
11588949
PLUG, M16X1.5X14, 24 OUTSIDE DIAMETER, SAE 1010 STEEL, GMW3044, W/ ALUMINUM WASHER(ENGINE BLOCK OIL GALLERY)(8.973)
- Require Quantity: 02
- Package Quantity: 1
$14.20 $9.02
1
Add To Cart
11588949
PLUG, M16X1.5X14, 24 OUTSIDE DIAMETER, SAE 1010 STEEL, GMW3044, W/ ALUMINUM WASHER(ENGINE BLOCK OIL GALLERY)(8.973)
$14.20 $9.02
1
Add To Cart
11588949
PLUG, M16X1.5X14, 24 OUTSIDE DIAMETER, SAE 1010 STEEL, GMW3044, W/ ALUMINUM WASHER(ENGINE BLOCK COOLANT DRAIN HOLE)(8.973)
$14.20 $9.02
1
Add To Cart

12556127
BOLT, Engine Camshaft gear, BOLT,CAMSHAFT SPROCKET(M8X1.25X24)(0.056)
- Require Quantity: 03
- Package Quantity: 1
$5.21 $3.31
1
Add To Cart

BOLT, Engine Rear Main Bearing
12556127
BOLT, CRANKSHAFT REAR OIL SEAL HOUSING(PART OF 518)(M8X1.25X24)(0.056)
Fitting Vehicle Options: S1(LM4,M30)
Require Quantity: 12
Package Quantity: 1
$5.21 $3.31
1
Add To Cart
12556127
BOLT, CRANKSHAFT REAR OIL SEAL HOUSING(PART OF 518)(M8X1.25X24)(0.056)
- Fitting Vehicle Options: ST1(LM4)
$5.21 $3.31
1
Add To Cart

SEALANT, Maintenance Products

12378521
SEALANT, ROOM TEMPERATURE VULCANIZING ENGINE SILICONE 5.3OZ CART(CRANKSHAFT REAR OIL SEAL HOUSING)
$23.51 $13.40
6
Add To Cart
19333512
SEALANT, THREAD(VIBRA-TITE 420)(1.69 OUNCE(OIL PAN AT FOUR CORNER)
$27.29 $15.21
1
Add To Cart

12560273
STUD, Engine Main Bearing Cap, STUD,CRANKSHAFT BEARING CAP(HEX FLANGED HEAD,M10X2X23,M8X1.25X11,113.5 TOTAL LONG)
- Require Quantity: 10
- Package Quantity: 1
$10.15 $6.60
1
Add To Cart

12589016
RETAINER, Engine Camshaft, RETAINER,CAMSHAFT(INCLUDES SEAL)(USE WITH BOLT 11561455)
$36.79 $22.22
1
Add To Cart

BOLT, Engine Flywheel
11569956
BOLT, FLYWHEEL(M11X1.5X23.5)(W/SEALER)(HEXAGON HEAD STYLE BOLT)
Fitting Vehicle Options: ST1(LM4)
Require Quantity: 06
Package Quantity: 10
$6.47 $4.11
10
Add To Cart
12568933
BOLT, AUTOMATIC TRANSMISSION FLEXIBLE PLATE(M10X1.0X30MM)(FINE THREADS)
- Fitting Vehicle Options: ST1(LL8)
- Require Quantity: 08
- Package Quantity: 1
$6.08 $3.86

BOLT, Engine Crankshaft Pulley and Balancer
12557840
BOLT, CRANKSHAFT BALANCER(M16X2.0X103)
Fitting Vehicle Options: ST1(LM4)
$9.21 $5.29
1
Add To Cart
11609792
BOLT, CRANKSHAFT BALANCER(HEXAGON HEAD WASHER, M16X2)
- Fitting Vehicle Options: ST1(LL8)

BEARING KIT, Engine Crankshaft Main
89017571
BEARING KIT, CRANKSHAFT(#1,2,4,5)(STD)
Fitting Vehicle Options: ST1(LM4)
Require Quantity: 04
Package Quantity: 1
$76.97 $48.92
1
Add To Cart
89017572
BEARING KIT, CRANKSHAFT THRUST(STD)(#3)
- Fitting Vehicle Options: ST1(LM4)
$69.37 $39.86
1
Add To Cart
89060394
BEARING KIT, CRANKSHAFT(#1,2,3,4,6,7)(STD)(INCLUDES 119,121)
- Fitting Vehicle Options: ST1(LL8)
- Require Quantity: 06
- Package Quantity: 1
$55.43 $33.50
1
Add To Cart
89065022
BEARING KIT, CRANKSHAFT(#5)(INCLUDES 120)
- Fitting Vehicle Options: ST1(LL8)
$52.63 $33.44
1
Add To Cart

PIN, Engine Cylinder Head
3522352
PIN, CYL HEAD LOCATING(HOLLOW DOWEL,15.675X28,CHAM BOTH ENDS,SAE 12L14,ZINC COATED (DIPPED OR PLATED))
Fitting Vehicle Options: ST1(LL8)
Require Quantity: 02
Package Quantity: 1
$17.91 $11.38
1
Add To Cart
12570326
PIN, CYL HEAD LOCATING
- Fitting Vehicle Options: ST1(LM4)
- Require Quantity: 04
- Package Quantity: 1
$7.39 $4.69
1
Add To Cart

12635957
SWITCH, Engine Oil Pressure/Temperature, SWITCH,ENGINE OIL PRESSURE
$89.49 $45.11
1
Add To Cart

55503649
HEATER, Engine Coolant Heater, HEATER,ENGINE COOLANT
$61.22 $38.99
1
Add To Cart

BOLT, Engine Connecting Rod Cap
12552947
BOLT, CONNECT ROD(PART OF 110,114)(MJ9X1.0-4H6HX61.9 LONG)
Fitting Vehicle Options: ST1(LL8)
Require Quantity: 12
Package Quantity: 1
$12.23 $7.77
1
Add To Cart
11610158
BOLT, CONNECT ROD(PART OF 105)(MJ9X1X43)
- Fitting Vehicle Options: ST1(LM4)
- Require Quantity: 16
- Package Quantity: 1
$18.70 $11.89
1
Add To Cart

SPROCKET, Engine Crankshaft/Timing
12556582
SPROCKET, CRANKSHAFT
Fitting Vehicle Options: ST1(LM4)
$47.39 $28.63
1
Add To Cart
24100061
SPROCKET, CRANKSHAFT
- Fitting Vehicle Options: ST1(LL8)
$127.65 $51.33
1
Add To Cart

SENSOR, Distributor (also Knock Sensor)
12560228
SENSOR, CRANKSHAFT POSITION(INCLUDES 702)(MATING CONNECT W/LEADS USE 88986451)
Fitting Vehicle Options: ST1(LM4)
$117.48 $65.50
1
Add To Cart
12567446
SENSOR, KNOCK(MATES W/CONNECT 13580877)
- Fitting Vehicle Options: ST1(LL8)
- Require Quantity: 02
- Package Quantity: 1
$48.68 $25.81
1
Add To Cart
12567712
SENSOR, CRANKSHAFT POSITION(W/STRAIGHT CONNECT)
- Fitting Vehicle Options: ST1(LL8)
$86.40 $41.61
1
Add To Cart
19420911
SENSOR, CAMSHAFT POSITION(INCLUDES 704)(MATING CONNECT W/LEADS USE 13585316)
- Fitting Vehicle Options: ST1(LM4)
$123.83 $59.64
1
Add To Cart

BEARING, Engine Camshaft & Balance Shaft Front
19260874
BEARING, CAMSHAFT(DIAMETER 2.353-2.354)(POSITIVE #1 & #5)(USED WITH ENGINE BLOCK CAM BORE DIAMETER OF 59.60 MM IN POSTIONS 1,5 .FOR 1ST DESIGN SEE 19167382)
Fitting Vehicle Options: ST1(LM4)(2ND DES)
Require Quantity: 02
Package Quantity: 1
$52.01 $31.42
1
Add To Cart
19260875
BEARING, CAMSHAFT(DIAMETER 2.334-2.335)(POSITIVE #2 & #4)(USED WITH ENGINE BLOCK CAM BORE DIAMETER OF 59.10 MM IN POSITIONS #1 ,5)(FOR 2ND DESIGN SEE 89017466)
- Fitting Vehicle Options: ST1(LM4)(1ST DES)
- Require Quantity: 02
- Package Quantity: 1
$52.01 $31.42
1
Add To Cart
19260875
BEARING, CAMSHAFT(DIAMETER 2.334-2.335)(POSITIVE #2 & #4)(USED WITH ENGINE BLOCK CAM BORE DIAMETER OF 59.10 MM IN POSITIONS #1 ,4)(FOR 1ST DESIGN SEE 12453168)
- Fitting Vehicle Options: ST1(LM4)(2ND DES)
- Require Quantity: 02
- Package Quantity: 1
$52.01 $31.42
1
Add To Cart
12453168
BEARING, CAMSHAFT(59.10 MM)(# 2,4)(USED WITH ENGINE BLOCK CAM BORE DIAMETER OF 58.85 MM IN POSITIONS 2,4)(FOR 2ND DESIGN SEE 12453167)
- Fitting Vehicle Options: ST1(LM4)(1ST DES)
- Require Quantity: 02
- Package Quantity: 1
$64.21 $56.52
1
Add To Cart

12576407
SPROCKET, Engine Camshaft, SPROCKET,CAMSHAFT
$59.89 $34.42
1
Add To Cart

BALANCER, Engine Crankshaft And Camshaft Balancer
19300488
BALANCER, CRANKSHAFT(0.666)
Fitting Vehicle Options: ST1(LM4)
$185.36 $106.50
1
Add To Cart
12578069
BALANCER, CRANKSHAFT(INCLUDES 12578073 WASHER)(REQUIRES SEAL KIT 89017622)
- Fitting Vehicle Options: ST1(LL8)
$186.33 $117.89

1997278
VALVE, Fuel Tank Evaporator/Purge Control, VALVE,EVAP EMISSION CANISTER PURGE SOLENOID(W/O BRACKET)(MATING CONNECT USE 13585860)
$69.54 $36.85
1
Add To Cart

ROD, Engine Piston
12574879
ROD, CONNECT (MACHINING W/ CAP)(INCLUDES 106,107,111)(PART OF 114)
Fitting Vehicle Options: ST1(LL8)
Require Quantity: 06
Package Quantity: 1
$105.23 $66.89
1
Add To Cart
12568734
ROD, CONNECT(INCLUDES 102,103)
- Fitting Vehicle Options: ST1(LM4)
- Require Quantity: 08
- Package Quantity: 1

12581717
SEAL, Engine Rear Main Bearing, SEAL,CRANKSHAFT REAR OIL(PART OF 509)

12567157
SPACER, Engine Front Cover, SPACER,ENGINE FRONT COVER BOLT
$5.91 $3.76
1
Add To Cart

PIN, Engine Camshaft Gear
12554553
PIN, CAMSHAFT SPROCKET LOCATING(1/4X5/8)
Fitting Vehicle Options: ST1(LM4)
$9.62 $6.12
1
Add To Cart
12585420
PIN, CRANKSHAFT SPROCKET LOCATING(LOCATED INSIDE BALANCER)
- Fitting Vehicle Options: ST1(LL8)
$7.01 $4.46
1
Add To Cart

HOUSING, Engine Rear Main Bearing
12581714
HOUSING, CRANKSHAFT REAR OIL SEAL(INCLUDES 511)(INCLUDE SEAL)
Fitting Vehicle Options: ST1(LL8)
$103.98 $59.74
1
Add To Cart
12639250
HOUSING, CRANKSHAFT REAR OIL SEAL(INCLUDES 141,517,519)
- Fitting Vehicle Options: ST1(LM4)
$98.60 $56.65
1
Add To Cart

PISTON, Engine Piston
12585784
PISTON, (W/CONNECT ROD)(STD)(INCLUDES 106,107,110-113,115-117)(W/CASTING 12579989)(INCLUDES ROD,PISTON,RINGS,RETAINER)
Fitting Vehicle Options: ST1(LL8)
Require Quantity: 06
Package Quantity: 1
88894397
PISTON, (W/PINION)(EXCEPT:CONNECT ROD)(INCLUDES 106,109)(STD)
- Fitting Vehicle Options: ST1(LM4)
- Require Quantity: 08
- Package Quantity: 1
88894398
PISTON, (W/PINION)(EXCEPT:CONNECT ROD)(INCLUDES 106,109)(0.5MM OVERSIZE)
- Fitting Vehicle Options: ST1(LM4)
- Require Quantity: 08
- Package Quantity: 1

COVER, Engine Front Cover

12628565
COVER, ENGINE FRONT(W/OIL PMP)(INCLUDES SEAL(FRONT COVER),GEARS, PLUG AND RELIEF VALVE)(SEE GROUP 00.000 "OIL PUMP,PAN AND RELATED PARTS" FOR DETAILED ILLUSTRATED VIEW)
12628565
COVER, ENGINE FRONT(W/OIL PMP)(INCLUDES SEAL(FRONT COVER),GEARS, PLUG AND RELIEF VALVE)

CRANKSHAFT, Engine
88958866
CRANKSHAFT
Fitting Vehicle Options: ST1(LL8)
$309.56 $195.86
1
Add To Cart
12559357
CRANKSHAFT
- Fitting Vehicle Options: ST1(LM4)

12560967
CAMSHAFT, Engine, CAMSHAFT,ENGINE
$760.85 $437.16
1
Add To Cart

PLATE, Engine Crankshaft
12654640
PLATE, AUTOMATIC TRANSMISSION FLEXIBLE(USE W/QTY 3 OF BOLT 24503068)
Fitting Vehicle Options: ST1(LM4)
$216.13 $124.19
1
Add To Cart
12576272
PLATE, AUTOMATIC TRANSMISSION FLEXIBLE
- Fitting Vehicle Options: ST1(LL8,M30)

RING KIT, Engine Piston
12670787
RING KIT, PISTON(STD)
Require Quantity: 08
Package Quantity: 1
$70.96 $40.77
1
Add To Cart
12670788
RING KIT, PISTON(0.5MM OVERSIZE)
- Require Quantity: 08
- Package Quantity: 1
$99.71 $40.10
1
Add To Cart

12561513
KEY, Engine Crankshaft Pulley and Balancer, KEY,CRANKSHAFT BALANCER(4.8MMX37.5MM)
$7.38 $4.69
1
Add To Cart

FITTING, Heater

12567908
FITTING, HEATER OUTLET HOSE
19355770
FITTING, HEATER INLET HOSE

12569598
PIN, Engine Clutch Housing or Transmission, PIN,TRANS LOCATING
- Require Quantity: 02
- Package Quantity: 1
$3.26 $2.07
1
Add To Cart

24577092
STIFFENER, Engine Main Bearing Cap, STIFFENER,CRANKSHAFT BEARING CAP
$67.49 $42.89
1
Add To Cart

3525915
PIN, Engine Front Cover, PIN,ENGINE FRONT COVER LOCATING(DOWEL,5.99X17.25,CHAM BOTH ENDS,10.9)
- Require Quantity: 02
- Package Quantity: 1
$5.88 $3.74
1
Add To Cart

3525915
PIN, Engine Rear Main Bearing, PIN,CRANKSHAFT REAR OIL SEAL HOUSING LOCATING(DOWEL,5.99X17.25,CHAM BOTH ENDS,10.9)(0.206)
- Require Quantity: 02
- Package Quantity: 1
$5.88 $3.74
1
Add To Cart

88984239
SLEEVE, Engine Cylinder case, SLEEVE,CYL(MACHINING)
- Require Quantity: 06
- Package Quantity: 1
$37.04 $23.54
1
Add To Cart

12564353
STUD, Starter Motor, STUD,STARTER(UPPER)
$8.47 $4.72

12573950
WASHER, Engine Crankshaft Pulley and Balancer, WASHER,CRANKSHAFT BALANCER(FRICTION TYPE WASHER)

11561026
BOLT, HEX FLANGED HEAD,THREAD,14.2 OUTSIDE DIAMETER,9.8,GMW3200,MACHINE,HEADER POINT(CRANKSHAFT REAR OIL SEAL HOUSING)
- Require Quantity: 08
- Package Quantity: 1
$36.02 $22.89
1
Add To Cart

11515756
BOLT, HEX FLANGED HEAD, M8X1.25X20,17THD,18 O.D.,10.9,7114M(CAMSHAFT RETAINER)
- Require Quantity: 04
- Package Quantity: 10
$7.50 $4.76
10
Add To Cart

11515756
BOLT, HEX FLANGED HEAD, M8X1.25X20,17THD,18 O.D.,10.9,7114M(BOLT,CRANKSHAFT POSITION SENSOR)
$7.50 $4.76
10
Add To Cart

11515756
BOLT, HEX FLANGED HEAD, M8X1.25X20,17THD,18 O.D.,10.9,7114M(CAMSHAFT POSITION SENSOR)
$7.50 $4.76
10
Add To Cart

1453658
PIN, DOWEL STRAIGHT 5/8 DIAMETER 1 3/16 LG(TRANS LOCATING)
- Require Quantity: 02
- Package Quantity: 1
- Replaced By: 12720455
$7.40 $4.69
1
Add To Cart

11517518
BOLT, HEX FLANGED HEAD,M6X1X20,17.9 THREAD,14.2 O.D.,9.8,TIN ZINC(EVAP EMISSION CANISTER PURGE SOLENOID VALVE BRACKET)
$7.91 $4.55
1
Add To Cart

9427693
PLUG, CUP 5/8, CORROSION RESISTANT STEEL(ENGINE BLOCK OIL GALLERY)(1.531)
$7.20 $4.57
1
Add To Cart

11589241
BOLT, HEX FLANGED HEAD,M6X1X20,17.5 THREAD,14.2 O.D.,8.8, GMW3359(CRANKSHAFT POSITION SENSOR)
$7.38 $4.69
1
Add To Cart

11611351
PLUG, HEXAGON, M28X1.25X13, 10.9 STEEL,GMW3044, INTAKE DRIVER W/THREAD SEAL(ENGINE COOLANT HEATER HOLE)
$23.11 $13.96
1
Add To Cart

11611351
PLUG, HEXAGON, M28X1.25X13, 10.9 STEEL,GMW3044, INTAKE DRIVER W/THREAD SEAL(LEFT SIDE ONLY)
$23.11 $13.96
1
Add To Cart

Genuine GM Parts, the Right Choice

GMPartsGiant.com offers the wholesale prices for genuine 2003 Chevrolet Trailblazer EXT 2WD parts. Parts like Engine Assembly-Cylinder Block & Related Parts are shipped directly from authorized GM dealers and backed by the manufacturer's warranty. Parts fit for the following vehicle options. Engine: 6 Cyl 4.2L, 8 Cyl 5.3L. Model Code: 4 DOOR EXT.