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  1. Home
  2. Chevrolet Trucks
  3. 2003
  4. Trailblazer EXT 4WD
  5. Fuel and exhaust

2003 Chevrolet Trucks Trailblazer EXT 4WD fuel and exhaust parts catalog

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Nut, pcm module and wiring harness (ll8/4.2s)

  • OEM part number: 03530297
  • Quantity in car: 2
  • Hex flanged head, m6x1, 5.85thk, 14.2 outside diameter, 10, zor (powertrain control module)

$?

Add to cart

Bolt, pcm module and wiring harness (ll8/4.2s)

  • OEM part number: 11517513
  • Quantity in car: 2
  • Hex flanged head m6x1x50, 18 thread, 14.2 outside diameter, 9.8, 6280m, 7mm p-point, reduced body (powertrain control module)

$3.30—3.55

Available in 2 shops

Add to cart

Bolt, pcm module and wiring harness (ll8/4.2s)

  • OEM part number: 11517518
  • Quantity in car: 1
  • Hex flanged head, m6x1x20, 17.9 thread, 14.2 outside diameter, 9.8, tin zinc (engine wiring harness clip bracket)

$2.90—3.31

Available in 38 shops

Add to cart

Stud, pcm module and wiring harness (ll8/4.2s)

  • OEM part number: 11519212
  • Quantity in car: 2
  • Straight, m6x1x45.5, m6x1x19.5, 74 tl, 9.8, 6280m (powertrain control module)

$2.71—3.04

Available in 2 shops

Add to cart

Bracket, pcm module and wiring harness (ll8/4.2s)

  • OEM part number: 15008622
  • Quantity in car: 1
  • Usage: ST1 (LL8), ST1 (LL8)

$5.93—6.67

Available in 2 shops

Add to cart

Retainer, pcm module and wiring harness (lm4/5.3p)

  • OEM part number: 11517824
  • Quantity in car: 2
  • Powertrain control module bracket (ebony) (20.5mm)
  • Usage: ST1 (06-36) (LM4), ST1 (06) (LM4)

$3.31—4.16

Available in 38 shops

Add to cart

Bolt, pcm module and wiring harness (lm4/5.3p)

  • OEM part number: 11589039
  • Quantity in car: 2
  • Hexagon, with conical washer, m6x1x30, 20 thread, 24 outside diameter, 9.8, gmw4205 (powertrain control module bracket)

$1.33—1.41

Available in 2 shops

Add to cart

Module, pcm module and wiring harness (lm4/5.3p)

  • OEM part number: 12586242
  • Quantity in car: 1
  • Powertrain control (without calibration) (requires reprogramming)
  • Usage: ST1 (LM4)

$436.95

Available in 1 shop

Add to cart

Module, pcm module and wiring harness (lm4/5.3p)

  • OEM part number: 12602802
  • Quantity in car: 1
  • Usage: ST1 (LM4)

$310.02—412.65

Available in 2 shops

Add to cart

Module, pcm module and wiring harness (lm4/5.3p)

  • OEM part number: 12602802
  • Quantity in car: 1
  • Powertrain control (without calibration & operating system) (code yctk, yctj, yctl, ycxy, ydnm, ydnk, ydnl, ydnt, ydzk, ydzl, ydzz, yfaa) (requires programming)
  • Usage: ST1 (LM4)

$310.02—412.65

Available in 2 shops

Add to cart

Bracket, pcm module and wiring harness (lm4/5.3p)

  • OEM part number: 15198307
  • Quantity in car: 1
  • Powertrain control module (includes bracket, retainer & spacer)
  • Usage: ST1 (06) (LM4), ST1 (36) (LM4), ST1 (06) (LM4)

$15.09—16.48

Available in 2 shops

Add to cart

Cover, pcm module and wiring harness (lm4/5.3p)

  • OEM part number: 15768930
  • Quantity in car: 1
  • Powertrain control module
  • Usage: ST1 (06) (LM4), ST1 (06-36) (LM4)

$3.42

Available in 1 shop

Add to cart

Valve, vapor canister lines and canister (lm4/5.3p, ll8/4.2s)

  • OEM part number: 01997278
  • Quantity in car: 1
  • Evaporative emission canister purge solenoid (without bracket)
  • Usage: ST1 (LL8)

$?

Add to cart

Valve, vapor canister lines and canister (lm4/5.3p, ll8/4.2s)

  • OEM part number: 01997279
  • Quantity in car: 1
  • Usage: ST1 (06) (LM4), ST1 (36) (LM4)

$?

Add to cart

Bolt, vapor canister lines and canister (lm4/5.3p, ll8/4.2s)

  • OEM part number: 11517518
  • Quantity in car: 1
  • Hex flanged head, m6x1x20, 17.9 thread, 14.2 outside diameter, 9.8, tin zinc (evaporative emission canister purge solenoid valve bracket)

$2.90—3.31

Available in 38 shops

Add to cart

Tube, vapor canister lines and canister (lm4/5.3p, ll8/4.2s)

  • OEM part number: 12578233
  • Quantity in car: 1
  • Evaporative emission canister purge
  • Usage: ST1 (LM4)

$16.91—38.68

Available in 38 shops

Add to cart

Tube, vapor canister lines and canister (lm4/5.3p, ll8/4.2s)

  • OEM part number: 12597877
  • Quantity in car: 1
  • Evaporative emission canister purge
  • Usage: ST1 (LL8)

$8.53—10.76

Available in 38 shops

Add to cart

Pipe, vapor canister lines and canister (lm4/5.3p, ll8/4.2s)

  • OEM part number: 15112967
  • Quantity in car: 1
  • Usage: ST158 (LL8)

$132.97—146.37

Available in 2 shops

Add to cart

Pipe, vapor canister lines and canister (lm4/5.3p, ll8/4.2s)

  • OEM part number: 15112994
  • Quantity in car: 1
  • Usage: ST158 (LM4), ST1 (06-36) (LM4)

$8.64—116.84

Available in 2 shops

Add to cart

Hose, vapor canister lines and canister (lm4/5.3p, ll8/4.2s)

  • OEM part number: 15181555
  • Quantity in car: 1
  • Evaporative emission
  • Usage: ST158 (LL8, DAY, OKL), ST157, 158, ST158 (DAY, OKL)

$80.15—87.56

Available in 2 shops

Add to cart

Hose, vapor canister lines and canister (lm4/5.3p, ll8/4.2s)

  • OEM part number: 15743519
  • Quantity in car: 1
  • Usage: ST158

$36.40—39.77

Available in 2 shops

Add to cart

Pipe, vapor canister lines and canister (lm4/5.3p, ll8/4.2s)

  • OEM part number: 15744707
  • Quantity in car: 1
  • Usage: ST1

$63.66—66.48

Available in 2 shops

Add to cart

Hose, vapor canister lines and canister (lm4/5.3p, ll8/4.2s)

  • OEM part number: 15744709
  • Quantity in car: 1
  • Evaporative emission canister purge
  • Usage: ST158

$36.89

Available in 1 shop

Add to cart

Canister, vapor canister lines and canister (lm4/5.3p, ll8/4.2s)

  • OEM part number: 17113683
  • Quantity in car: 1
  • Evaporative emission (at fuel tank)
  • Usage: ST158

$123.09—244.53

Available in 38 shops

Add to cart

Bracket, vapor canister lines and canister (lm4/5.3p, ll8/4.2s)

  • OEM part number: 24577194
  • Quantity in car: 1
  • Evaporative emission canister purge solenoid valve
  • Usage: ST1 (LL8)

$3.80—3.97

Available in 2 shops

Add to cart

Valve, vapor canister lines and canister (lm4/5.3p, ll8/4.2s)

  • OEM part number: 25950499
  • Quantity in car: 1
  • Evaporative emission canister ventilation solenoid
  • Usage: ST1

$33.57—66.06

Available in 38 shops

Add to cart

Nut, exhaust system (ll8/4.2s)

  • OEM part number: 11514517
  • Quantity in car: 3
  • Hexagon, with conical spring washer, m6x1, 5.7thk, 18 outside diameter, 9, 7111m (exhaust muffler heat shield)

$0.36—10.46

Available in 39 shops

Add to cart

Nut, exhaust system (ll8/4.2s)

  • OEM part number: 11514517
  • Quantity in car: 5
  • Hexagon, with conical spring washer, m6x1, 5.7thk, 18 outside diameter, 9, 7111m (catalytic converter heat shield)

$0.36—10.46

Available in 39 shops

Add to cart

Bolt, exhaust system (ll8/4.2s)

  • OEM part number: 11515754
  • Quantity in car: 2
  • Heavy hexagon head, m8x1.25x12, 18 outside diameter, 10.9, ze (catalytic converter heat shield)

$0.26—4.27

Available in 39 shops

Add to cart

Bolt, exhaust system (ll8/4.2s)

  • OEM part number: 11518388
  • Quantity in car: 4
  • Trans mount (m10x1.5x45)
  • Usage: S1, S155, 158

$3.69—4.79

Available in 38 shops

Add to cart

Bolt, exhaust system (ll8/4.2s)

  • OEM part number: 11518388
  • Quantity in car: 2
  • Trans mount (m10x1.5x45)
  • Usage: T1, T1

$3.69—4.79

Available in 38 shops

Add to cart

Sensor, exhaust system (ll8/4.2s)

  • OEM part number: 12577588
  • Quantity in car: 1
  • Heated oxygen (position 1) (in exhaust manifold/crossover)
  • Usage: ST1 (LL8)

$57.90—107.46

Available in 38 shops

Add to cart

Sensor, exhaust system (ll8/4.2s)

  • OEM part number: 12578624
  • Quantity in car: 1
  • Heated oxygen (position 2)
  • Usage: ST1 (LL8), ST1 (LL8)

$44.85—111.42

Available in 38 shops

Add to cart

Sensor, exhaust system (ll8/4.2s)

  • OEM part number: 12586996
  • Quantity in car: 1
  • Heated oxygen (position 1) (in exhaust manifold)
  • Usage: ST1 (LL8)

$56.27—106.49

Available in 38 shops

Add to cart

Stud, exhaust system (ll8/4.2s)

  • OEM part number: 15028620
  • Quantity in car: 2
  • Usage: ST155, 158, ST1 (06) (LH6, LL8), ST1 (36)

$9.41—18.55

Available in 38 shops

Add to cart

Nut, exhaust system (ll8/4.2s)

  • OEM part number: 15032594
  • Exhaust manifold pipe (hexagon m10x1.5) (attached exhaust manifold pipe)
  • Usage: ST1, ST1

$0.68—5.80

Available in 39 shops

Add to cart

Converter, exhaust system (ll8/4.2s)

  • OEM part number: 15050555
  • Quantity in car: 1
  • Three way catalytic (with exhaust manifold pipe)
  • Usage: ST158 (LL8), ST158 (LL8, NA3, NC1, NF9), ST158 (LL8), ST158 (LL8, NA3, NC1, NF9)

$661.49—1281.07

Available in 38 shops

Add to cart

Insulator, exhaust system (ll8/4.2s)

  • OEM part number: 15120136
  • Quantity in car: 2
  • Exhaust muffler hanger (with 2 hanger holes) (rear hanger)
  • Usage: ST1 (LL8)

$3.41—21.91

Available in 38 shops

Add to cart

Insulator, exhaust system (ll8/4.2s)

  • OEM part number: 15120136
  • Quantity in car: 1
  • Exhaust muffler hanger (with 2 hanger holes) (rear hanger)
  • Usage: ST1

$3.41—21.91

Available in 38 shops

Add to cart

Insulator, exhaust system (ll8/4.2s)

  • OEM part number: 15120137
  • Quantity in car: 1
  • Exhaust muffler hanger (center hanger)
  • Usage: ST1

$12.23—31.02

Available in 38 shops

Add to cart

Seal, exhaust system (ll8/4.2s)

  • OEM part number: 15167765
  • Quantity in car: 1
  • Usage: ST1 (LL8)

$13.63—16.15

Available in 38 shops

Add to cart

Converter, exhaust system (ll8/4.2s)

  • OEM part number: 15190659
  • Quantity in car: 1
  • Three way catalytic (with exhaust manifold pipe) ("nre is a standard option added mid model year for 2003 models")
  • Usage: ST158 (LL8, NF2, NRE), ST158 (LL8, NF2, NRE)

$434.47—531.59

Available in 38 shops

Add to cart

Converter, exhaust system (ll8/4.2s)

  • OEM part number: 15216001
  • Quantity in car: 1
  • Three way catalytic (with exhaust manifold pipe)
  • Usage: ST158 (LL8), ST158 (LL8)

$413.92—840.26

Available in 38 shops

Add to cart

Insulator, exhaust system (ll8/4.2s)

  • OEM part number: 15292363
  • Quantity in car: 1
  • Exhaust muffler hanger (front hanger)
  • Usage: ST1

$22.06—39.65

Available in 38 shops

Add to cart

Nut, exhaust system (ll8/4.2s)

  • OEM part number: 15709703
  • Quantity in car: 2
  • Hexagon 10x1.5thd, 21.8 outside diameter stainless steel (exhaust muffler)

$1.15—2.88

Available in 39 shops

Add to cart

Muffler, exhaust system (ll8/4.2s)

  • OEM part number: 15778683
  • Quantity in car: 1
  • Usage: ST158 (36) (LL8), ST158 (36) (LL8), ST158 (36) (LL8)

$473.66

Available in 1 shop

Add to cart

Shield, exhaust system (ll8/4.2s)

  • OEM part number: 15821716
  • Quantity in car: 1
  • Usage: ST158

$67.01—75.41

Available in 2 shops

Add to cart

Muffler, exhaust system (ll8/4.2s)

  • OEM part number: 15847577
  • Quantity in car: 1
  • Usage: ST158 (06) (LL8), ST158 (06) (LL8), ST158 (06) (LL8)

$497.62—537.22

Available in 38 shops

Add to cart

Shield, exhaust system (ll8/4.2s)

  • OEM part number: 15886422
  • Quantity in car: 1
  • Usage: ST1 (06-36), ST1 (06)

$19.30—20.77

Available in 2 shops

Add to cart

Shield, exhaust system (ll8/4.2s)

  • OEM part number: 15918791
  • Quantity in car: 1
  • Catalytic converter heat
  • Usage: ST1 (M30), ST1 (06-36)

$6.89—12.40

Available in 38 shops

Add to cart

Bracket, exhaust system (ll8/4.2s)

  • OEM part number: 89040447
  • Quantity in car: 1
  • Exhaust pipe hanger
  • Usage: ST1 (LL8, M30), ST1 (LL8, M30)

$72.08—150.00

Available in 38 shops

Add to cart

Nut, exhaust system (lm4/5.3p)

  • OEM part number: 11516149
  • Quantity in car: 1
  • Unit, 8x1.25, multi thread, .08'-4.0' thick panel, pz (exhaust heat shield)

$1.23—2.73

Available in 3 shops

Add to cart

Bolt, exhaust system (lm4/5.3p)

  • OEM part number: 11519862
  • Quantity in car: 1
  • Hexagon with flat washer, m8x1.25x25, 15.85 thread, 17 outside diameter, 9.8, 6280m, machine, mat-point (exhaust heat shield)

$0.26—0.29

Available in 38 shops

Add to cart

Nut, exhaust system (lm4/5.3p)

  • OEM part number: 11609411
  • Quantity in car: 4
  • Hexagon with conical washer, m6x1, 5.7 thick, 16 outside diameter, 9, gmw3200 (exhaust muffler heat shield)

$0.35—0.41

Available in 38 shops

Add to cart

Nut, exhaust system (lm4/5.3p)

  • OEM part number: 11609411
  • Quantity in car: 5
  • Hexagon with conical washer, m6x1, 5.7 thick, 16 outside diameter, 9, gmw3200 (catalytic converter heat shield)

$0.35—0.41

Available in 38 shops

Add to cart

Nut, exhaust system (lm4/5.3p)

  • OEM part number: 11609411
  • Quantity in car: 2
  • Hexagon with conical washer, m6x1, 5.7 thick, 16 outside diameter, 9, gmw3200 (catalytic converter heat shield)

$0.35—0.41

Available in 38 shops

Add to cart

Sensor, exhaust system (lm4/5.3p)

  • OEM part number: 12567127
  • Quantity in car: 2
  • Heated oxygen (position 2) (pre converter)
  • Usage: ST1 (06) (LM4), ST1 (06-36) (LM4)

$61.52—64.18

Available in 2 shops

Add to cart

Sensor, exhaust system (lm4/5.3p)

  • OEM part number: 12567163
  • Quantity in car: 2
  • Heated oxygen (position 3) (post converter)
  • Usage: ST1 (06) (LM4), ST1 (06-36) (LM4)

$63.49—107.60

Available in 38 shops

Add to cart

Stud, exhaust system (lm4/5.3p)

  • OEM part number: 15028620
  • Quantity in car: 2
  • Usage: ST155, 158

$9.41—18.55

Available in 38 shops

Add to cart

Nut, exhaust system (lm4/5.3p)

  • OEM part number: 15032594
  • Exhaust manifold pipe (hexagon m10x1.5) (attached exhaust manifold pipe)
  • Usage: ST1

$0.68—5.80

Available in 39 shops

Add to cart

Seal RH, exhaust system (lm4/5.3p)

  • OEM part number: 15035747
  • Quantity in car: 1
  • Usage: ST158 (LM4), ST1 (03-06-36) (LM4)

$11.25—18.95

Available in 38 shops

Add to cart

Seal LH, exhaust system (lm4/5.3p)

  • OEM part number: 15077362
  • Quantity in car: 1
  • Usage: ST158 (LM4), ST1 (06-36) (LM4)

$10.11—17.05

Available in 38 shops

Add to cart

Converter, exhaust system (lm4/5.3p)

  • OEM part number: 15083262
  • Quantity in car: 1
  • Three way catalytic (with exhaust manifold pipe)
  • Usage: ST158 (LM4), ST158 (LM4)

$582.88—1122.59

Available in 38 shops

Add to cart

Insulator, exhaust system (lm4/5.3p)

  • OEM part number: 15120137
  • Quantity in car: 1
  • Exhaust muffler hanger (center hanger)
  • Usage: ST1

$12.23—31.02

Available in 38 shops

Add to cart

Muffler, exhaust system (lm4/5.3p)

  • OEM part number: 15175774
  • Quantity in car: 1
  • Usage: ST158 (LM4)

$442.61—457.92

Available in 2 shops

Add to cart

Insulator, exhaust system (lm4/5.3p)

  • OEM part number: 15292363
  • Quantity in car: 1
  • Exhaust muffler hanger (front hanger)
  • Usage: ST1

$22.06—39.65

Available in 38 shops

Add to cart

Nut, exhaust system (lm4/5.3p)

  • OEM part number: 15709703
  • Quantity in car: 2
  • Hexagon 10x1.5thd, 21.8 outside diameter stainless steel (exhaust muffler)

$1.15—2.88

Available in 39 shops

Add to cart

Shield, exhaust system (lm4/5.3p)

  • OEM part number: 15821716
  • Quantity in car: 1
  • Usage: ST158

$67.01—75.41

Available in 2 shops

Add to cart

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