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Engine Exhaust System Chevrolet Cruze I рестайлинг

Exhaust 13 illustrations ~2004 words

Fastener Tightening Specifications (1.4L LUV)

ApplicationSpecification
MetricEnglish
Catalytic Converter to Warm Up Three Way Catalytic Converter (LUJ, LUH)22 N.m16 lb ft
Exhaust Front Hanger Bracket Bolt M820 N.m15 lb ft
Exhaust Front Hanger Bracket Bolt M1060 N.m +30° - 45° (1)44 lb ft +30° - 45° (1)
Exhaust Front Hanger Bracket Nut20 N.m15 lb ft
Exhaust Manifold/Catalytic Converter to Bracket (LDD)10 N.m89 lb in
Exhaust Front Pipe to Exhaust Manifold/Catalytic Converter Flange Nut (LDD)17 N.m (1)13 lb ft (1)
Exhaust Front Pipe to Exhaust Muffler Flange Nut (LDD)17 N.m (1)13 lb ft (1)
Exhaust Manifold to Cylinder Head (LDD)22 N.m16 lb ft
Exhaust Manifold Heat Shield Bolts (LUJ, LUH)8 N.m71 lb in
Turbocharger to Cylinder Head8 N.m71 lb in
Warm Up Three Way Catalytic Converter Heat Shield Bolts10 N.m89 lb in
Warm Up Three Way Catalytic Converter Bracket to Cylinder Block (LUJ, LUH)22 N.m16 lb ft
Warm Up Three Way Catalytic Converter to Bracket LUJ, LUH)22 N.m16 lb ft
Warm Up Three Way Catalytic Converter to Turbocharger (V-Clamp) LUJ, LUH13 N.m115 lb in
1 = Use NEW Fastener.

Fastener Tightening Specifications (1.4L LUV)

Fastener Tightening Specifications (1.8L LUW and LWE)

ApplicationSpecification
MetricEnglish
Catalytic Converter to Cylinder Head Nut2015 lb ft
Catalytic Converter to Exhaust Front Pipe Nut2216 lb ft
Engine Lift Bracket Bolt2519 lb ft
Engine Lift Bracket Stud and Nut2519 lb ft
Exhaust Front Hanger Bracket Bolt M82216 lb ft
Exhaust Front Hanger Bracket Bolt M10 (1)
First Pass6044 lb ft
Final Pass30-45 Degrees
Exhaust Front Hanger Insulator Nut1713 lb ft
Exhaust Front Pipe to Exhaust Muffler Nut1713 lb ft
Exhaust Front Pipe-to-Underbody Shield Nut2.522 lb in
Exhaust Front/Rear Muffler Shield Nut2.522 lb in
Exhaust Manifold Brace Bolt (Catalytic Converter To Brace)2015 lb ft
Exhaust Manifold Brace Bolt (Brace To Engine Block) (1)
First Pass2015 lb ft
Final Pass30 - 45 Degrees
Exhaust Manifold Heat Shield Bolt (bottom)871 lb in
Exhaust Manifold Heat Shield Bolt (top)1511 lb ft
Exhaust Manifold Nut (1)2015 lb ft
Exhaust Pipe Clamp3022 lb ft
Heated Oxygen Sensor (2)4231 lb ft
Tank Heat Shield Bolt2.522 lb in
Wiring Harness Bracket Bolt1511 lb ft
1 = Use NEW Fastener. 2 = Use assembly paste (refer to Electronic Parts Catalog).

Fastener Tightening Specifications (1.8L LUW and LWE)

Symptoms - Engine Exhaust

  1. Review the Exhaust System Description and Operation in order to familiarize yourself with the system functions. Refer to «Exhaust System Description (1.8L LUW and LWE)»(/chevrolet/cruze/i-2012-2015/remont/exhaust/#engine-exhaust-system) .
  2. All diagnostics on a vehicle should follow a logical process. Strategy Based Diagnostics is a uniform approach for repairing all systems. The diagnostic flow is the place to start when repairs are necessary and may always be used in order to resolve a system problem.

Visual/Physical Inspection

  1. Inspect for aftermarket or non-OEM devices such as, but not including; tailpipe extensions, headers, and exhaust cutouts. This could affect the operation and proper performance of the exhaust system.
  2. Verify the exact operating conditions under which the concern exists. Note factors such as engine RPM, engine temperature, engine load, and frequency of concern.
  3. Inspect the easily accessible or visible system components for obvious damage or conditions, which could cause any symptom.

Intermittents

Test the vehicle under the same conditions that the customer reported in order to verify the system is operating as designed.

Symptom List

  1. Loss of power-Refer to «Restricted Exhaust»(/chevrolet/cruze/i-2012-2015/remont/exhaust/#engine-exhaust-system) .
  2. Poor acceleration-Refer to «Restricted Exhaust»(/chevrolet/cruze/i-2012-2015/remont/exhaust/#engine-exhaust-system) .
  3. Poor fuel economy-Refer to «Restricted Exhaust»(/chevrolet/cruze/i-2012-2015/remont/exhaust/#engine-exhaust-system) .
  4. Excessive smoke-diesel-Refer to «Restricted Exhaust»(/chevrolet/cruze/i-2012-2015/remont/exhaust/#engine-exhaust-system) .
  5. Exhaust hissing noise-Refer to «Exhaust Leakage»(/chevrolet/cruze/i-2012-2015/remont/exhaust/#engine-exhaust-system__exhaust-leakage) .
  6. Exhaust popping noise-Refer to «Exhaust Leakage»(/chevrolet/cruze/i-2012-2015/remont/exhaust/#engine-exhaust-system__exhaust-leakage) .
  7. Exhaust rattle noise-Refer to «Exhaust Noise»(/chevrolet/cruze/i-2012-2015/remont/exhaust/#engine-exhaust-system__exhaust-noise) .
  8. Loud Exhaust noise-Refer to «Exhaust Noise»(/chevrolet/cruze/i-2012-2015/remont/exhaust/#engine-exhaust-system__exhaust-noise) .
  9. Exhaust buzz, groan, hum noise-Refer to «Exhaust Noise»(/chevrolet/cruze/i-2012-2015/remont/exhaust/#engine-exhaust-system__exhaust-noise) .

Special Tools

EN-35314-A Exhaust Back Pressure Gage

For equivalent regional tools. Refer to Special Tools .

Diagnostic Aids

A quick check of exhaust flow will help determine for gasoline engines.

Test Description

The numbers below refer to the step numbers on the diagnostic table.

  1. 3 The exhaust system has very low back pressure under normal conditions. If the exhaust system is restricted, a significant increase in the exhaust pressure is noticed on the EN-35314-A gauge. Removing the heated oxygen sensor may set a DTC. When finishing this diagnostic table, be sure to clear all codes.
  2. 4 This step will isolate the catalytic converter from the remainder of the exhaust system.
  3. 7 Confirming that the condition has been fixed is essential. If the symptom still exists and the vehicle has a dual exhaust system, proceed to Step 2 and repeat diagnostic procedure on the opposite exhaust pipe.
StepActionValue(s)YesNo
1Did you verify the customers complaint?Go to Step 2
2Did you review the exhaust symptoms diagnostic information and perform the necessary inspections?Go to Step 3Go to Symptoms - Engine Exhaust
3Remove the heated oxygen sensor 1. Refer to: 1.4L LUJ Heated Oxygen Sensor Replacement - Sensor 1 1.8L LUW Heated Oxygen Sensor Replacement - Sensor 1 Install the EN-35314-A gauge in place of the heated oxygen sensor 1. Start the engine. Increase and monitor the engine speed at 2, 000 RPM. Observe the exhaust system back pressure reading on the gauge. Does the reading exceed the specified value?14 kPa (2 psi)Go to Step 4Go to Step 7
4Turn the engine off and place the ignition in the lock position. Remove the EN-35314-A gauge. Install the heated oxygen sensor 1. Refer to: 1.4L LUJ Heated Oxygen Sensor Replacement - Sensor 1 1.8L LUW Heated Oxygen Sensor Replacement - Sensor 1 Remove the heated oxygen sensor 2. Refer to: 1.4L LUJ Heated Oxygen Sensor Replacement - Sensor 2 1.8L LUW Heated Oxygen Sensor Replacement - Sensor 2 Install the EN-35314-A gauge in place of the heated oxygen sensor 2. Start the engine. Increase and monitor the engine speed at 2, 000 RPM. Observe the exhaust system back pressure reading on the gauge. Does the reading exceed the specified value?Go to Step 5Go to Step 6
5Inspect the exhaust system for the following conditions: Damage in the exhaust pipe. Debris in the exhaust pipe. Muffler or resonator internal failure. Two-layer exhaust pipe separation. Did you find and correct the condition?Go to Step 7
6Replace the catalytic converter. Refer to Catalytic Converter Replacement (1.4L LUV) , Catalytic Converter Replacement (1.8L LUW and LWE) . Did you find and correct the condition?Go to Step 7
7Remove the EN-35314-A gauge. Install the heated oxygen sensor 2. Refer to: 1.4L LUJ Heated Oxygen Sensor Replacement - Sensor 2 1.8L LUW Heated Oxygen Sensor Replacement - Sensor 2 Clear any DTCs. Road test the vehicle in order to verify the repair. Did you correct the condition?System OKGo to Step 2

Restricted Exhaust

Exhaust Leakage

ProblemAction
WARNING: While engine is operating, the exhaust system will become extremely hot. To prevent burns avoid contacting a hot exhaust system. DEFINITION: An exhaust leak may show stains at the area of the leak. The leak may be felt by holding a hand close to the suspected areas or using a smoke pencil. The leak may make a popping or hissing noise.Refer to Symptoms - Engine Exhaust prior to beginning this table.
Misaligned or improperly installed exhaust system componentsAlign and tighten the components to the specifications. Refer to Fastener Tightening Specifications (1.4L LUV) , Fastener Tightening Specifications (1.8L LUW and LWE) .
Exhaust leaks at the following connections: Exhaust manifold to pipe Flanges Pipe clampsTighten the components to the specifications. Refer to Fastener Tightening Specifications (1.4L LUV) , Fastener Tightening Specifications (1.8L LUW and LWE) .
Seals or gaskets leaking. Exhaust manifold to cylinder head Exhaust pipes to exhaust manifold Catalytic converter connection AIR connections to the exhaust manifold or cylinder headReplace the leaking seal or gasket. Refer to the affected components procedure for service.
Irregularities at the mating surfaces on the flange connectionsRepair as required or replace the affected component. Refer to the affected components procedure for service.
Exhaust manifold cracked or brokenReplace the exhaust manifold. Refer to Exhaust Manifold Replacement .
Exhaust system component connection welds leakingReplace the leaking component. Refer to the affected component's procedure for service.
WARNING
While engine is operating, the exhaust system will become extremely hot. To prevent burns avoid contacting a hot exhaust system.

Exhaust Leakage

Exhaust Noise

ConditionsAction
DEFINITION: An audible or physical noise due to a faulty component or damaged components causing a loose or misaligned exhaust system resulting in a rattle or vibration noise, i.e. buzz, groan, hum. Refer to Symptoms - Engine Exhaust prior to beginning this table.
Popping or hissing noiseExhaust leak. Refer to Exhaust Leakage .
Loud exhaustCompare to a known good vehicle. Inspect for a damaged or failed muffler. Replace the faulty muffler. Refer to Exhaust System Replacement .
External rattle or vibration noiseInspect for a bent or loose hanger, loose heat shield, or loose clamp. Inspect for an exhaust pipe causing interference. Repair or replace the affected component. Refer to the affected component's service procedure.
Internal rattleTest the components by tapping with a rubber mallet to confirm a rattle. Replace the faulty catalytic converter, or muffler. Refer to one of the following procedures: Catalytic Converter Replacement (1.4L LUV) , Catalytic Converter Replacement (1.8L LUW and LWE) Exhaust System Replacement

Exhaust Noise

Scheme 1

Scheme 1: Exhaust Manifold Replacement
Scheme 1: Exhaust Manifold Replacement
CalloutComponent Name
WARNING: Refer to Exhaust Service Warning . WARNING: Refer to Protective Goggles and Glove Warning . Preliminary Procedure Remove the catalytic converter heat shield. Refer to Catalytic Converter Heat Shield Replacement (1.4L LUV) , Catalytic Converter Heat Shield Replacement (1.8L LUW and LWE) .
1Catalytic Converter to Flexible Exhaust Pipe Nut (Qty: 3) CAUTION: Refer to Fastener Caution Tighten 22 (16 lb ft)
2Flexible Exhaust Pipe
3Catalytic Converter to Flexible Exhaust Pipe Gasket
4Exhaust Manifold Brace Bolt (Catalytic Converter To Brace) (Qty: 2) Tighten 20 (15 lb ft)
5Exhaust Manifold Brace Bolt (Brace To Engine Block) (Qty: 2) Procedure NOTE: NOT necessary to remove the brace. Loosen the exhaust manifold brace bolts. Tighten 20 (15 lb ft) + 30 degrees + 15 degrees
6Heated Oxygen Sensor Tighten 42 (31 lb ft)
7Catalytic Converter to Cylinder Head Nut (Qty: 9) Tighten 20 (15 lb ft)
8Catalytic Converter
9Catalytic Converter To Cylinder Head Gasket
WARNING
Refer to Exhaust Service Warning .
CAUTION
Refer to Fastener Caution
NOTE
NOT necessary to remove the brace.

Exhaust Manifold Replacement

Scheme 2

Scheme 2: Exhaust Front Pipe Replacement
Scheme 2: Exhaust Front Pipe Replacement
CalloutComponent Name
WARNING: Refer to Exhaust Service Warning . WARNING: Refer to Protective Goggles and Glove Warning . Preliminary Procedures Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle . Disconnect the heated oxygen sensor.
1Exhaust Front Pipe to Exhaust Muffler Nut (Qty: 2) CAUTION: Refer to Fastener Caution . Tighten 17 N.m (13 lb ft)
2Exhaust Front Pipe Gasket to Exhaust Muffler
3Catalytic Converter to Exhaust Front Pipe Nut (Qty: 3) Tighten 22 N.m (16 lb ft)
4Catalytic Converter to Exhaust Front Pipe Gasket
5Drivetrain and Front Suspension Frame Support Bolts - M10 (Qty: 2) CAUTION: Refer to Torque-to-Yield Fastener Caution . Procedure Install NEW support bolts, do NOT reuse old bolts. Tighten 60 N.m (44 lb ft) +30°-45°
6Exhaust Pipe Front Hanger Bracket Bolt - M8 (Qty: 2) Tighten 22 N.m (16 lb ft)
7Exhaust Pipe Front Hanger Insulator Nut (Qty: 2) Tighten 17 N.m (13 lb ft)
8Exhaust Pipe Front Hanger Bracket
9Exhaust Muffler Insulator (Qty: 2)
10Exhaust Front Pipe
11Heated Oxygen Sensor Tighten 42 N.m (31 lb ft)
WARNING
Refer to Exhaust Service Warning .
CAUTION
Refer to Fastener Caution .

Exhaust Front Pipe Replacement

Removal Procedure

  1. Read the exhaust system cutting instructions. .
  2. Remove the exhaust rear muffler. Refer to «Exhaust Rear Muffler Replacement»(/chevrolet/cruze/i-2012-2015/remont/exhaust/#engine-exhaust-system) .
  3. Remove the 4 exhaust pipe front hanger bracket bolts (4, 5).
  4. Remove the 2 exhaust pipe front hanger bracket insulator nuts (3).
  5. Remove the exhaust pipe front hanger bracket (2).
  6. Remove the 2 exhaust pipe front hanger bracket insulators (1).
  7. Remove the heated oxygen sensor (1).
  8. Remove and DISCARD the 3 catalytic converter nuts (3).
  9. Remove the exhaust front pipe gasket (4) from the catalytic converter and exhaust front pipe (2).
  10. Remove the exhaust system.

Installation Procedure

  1. Install the exhaust system.
  2. Install the NEW exhaust front pipe gasket (4).
  3. Install the 3 NEW catalytic converter nuts (3) to the exhaust front pipe (2) and tighten to 22 N.m (16 lb ft).
  4. Install the heated oxygen sensor (1) and tighten to 42 N.m (31 lb ft).
  5. Install the 2 exhaust pipe front hanger bracket insulators (1).
  6. Install the exhaust pipe front hanger bracket (2).
  7. Install the 2 exhaust pipe front hanger bracket insulator nuts (3) and tighten to 17 N.m (13 lb ft).
  8. Install the 4 exhaust pipe front hanger bracket bolts (4, 5) and tighten to 22 N.m (16 lb ft).
  9. Install the 2 exhaust pipe front hanger bolts (5) - M10 and tighten to 60 N.m (44 lb ft).
  10. Install the exhaust rear muffler. Refer to «Exhaust Rear Muffler Replacement»(/chevrolet/cruze/i-2012-2015/remont/exhaust/#engine-exhaust-system) .

Catalytic Converter Replacement (1.4L LUV)

CalloutComponent Name
WARNING: In order to avoid being burned, do not service the exhaust system while it is still hot. Service the system when it is cool. WARNING: Always wear protective goggles and gloves when removing exhaust parts as falling rust and sharp edges from worn exhaust components could result in serious personal injury. CAUTION: Do not bend the exhaust flex pipe more than 10 degrees in any direction. Bending of more than 10 degrees or twisting in a range of ±0.5 degrees will damage the exhaust flex decoupler. Preliminary Procedures Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle . Disconnect the heated oxygen sensor wiring harness plug.
1Exhaust Front Pipe to Exhaust Muffler Nut (Qty: 2) CAUTION: Refer to Fastener Caution . CAUTION: Refer to Torque-to-Yield Fastener Caution . Procedure Support exhaust muffler with a jack. Install NEW nuts, do NOT reuse old nuts. Tighten 17 N.m (13 lb ft)
2Exhaust Front Pipe Gasket to Exhaust Muffler
3Catalytic Converter to Exhaust Front Pipe Nuts (Qty: 3) Procedure Install NEW nuts, do NOT reuse old nuts. Tighten 22 N.m (16 lb ft)
4Catalytic Converter to Exhaust Front Pipe Gasket
5Drivetrain and Front Suspension Frame Support Bolts - M10 (Qty: 2) Procedure Install NEW bolts, do NOT reuse old bolts. Tighten 60 N.m (44 lb ft) +30°-45°
6Exhaust Pipe Front Hanger Bracket Bolts - M8 (Qty: 2) Tighten 22 N.m (16 lb ft)
7Exhaust Pipe Front Hanger Insulator Nuts (Qty: 2) Tighten 17 N.m (13 lb ft)
8Exhaust Pipe Front Hanger Bracket
9Exhaust Muffler Insulator (Qty: 2)
10Exhaust Front Pipe Assembly
11Heated Oxygen Sensor Tighten 42 N.m (31 lb ft)
WARNING
In order to avoid being burned, do not service the exhaust system while it is still hot. Service the system when it is cool.
WARNING
Always wear protective goggles and gloves when removing exhaust parts as falling rust and sharp edges from worn exhaust components could result in serious personal injury.
CAUTION
Do not bend the exhaust flex pipe more than 10 degrees in any direction. Bending of more than 10 degrees or twisting in a range of ±0.5 degrees will damage the exhaust flex decoupler.
CAUTION
Refer to Fastener Caution .

Catalytic Converter Replacement (1.4L LUV)

Scheme 3

Scheme 3: Catalytic Converter Replacement (1.8L LUW and LWE)
Scheme 3: Catalytic Converter Replacement (1.8L LUW and LWE)
CalloutComponent Name
WARNING: Refer to Exhaust Service Warning . WARNING: Refer to Protective Goggles and Glove Warning . Preliminary Procedure Remove the catalytic converter heat shield. Refer to Catalytic Converter Heat Shield Replacement (1.4L LUV) , Catalytic Converter Heat Shield Replacement (1.8L LUW and LWE)
1Catalytic Converter to Flexible Exhaust Pipe Nut (Qty: 3) CAUTION: Refer to Fastener Caution Tighten 22 N.m (16 lb ft)
2Flexible Exhaust Pipe
3Catalytic Converter to Flexible Exhaust Pipe Gasket
4Exhaust Manifold Brace Bolt (Qty: 4) Tighten 20 N.m (15 lb ft)
5Catalytic Converter
6Exhaust Manifold Brace
7Heated Oxygen Sensor Tighten 42 N.m (31 lb ft)
8Catalytic Converter to Cylinder Head Nut (Qty: 9) Tighten 20 N.m (15 lb ft)
9Catalytic Converter to Cylinder Head Gasket
WARNING
Refer to Exhaust Service Warning .
CAUTION
Refer to Fastener Caution

Catalytic Converter Replacement (1.8L LUW and LWE)

  1. Disconnect battery negative cable. Refer to «Battery Negative Cable Disconnection and Connection»(/chevrolet/cruze/i-2012-2015/remont/charging-system/#battery-charging-system-and-starting-system) .
  2. Disconnect the heated oxygen sensor 1 wiring harness connector. Refer to «Heated Oxygen Sensor Replacement - Sensor 1»(/chevrolet/cruze/i-2012-2015/remont/testing-diagnostics/#engine-controls-and-fuel-14l-luv-repair-instructions) .
  3. Remove the exhaust manifold heat shield. Refer to «Exhaust Manifold Heat Shield Replacement (1.4L LUV)»(/chevrolet/cruze/i-2012-2015/remont/exhaust/#engine-exhaust-system) , «Exhaust Manifold Heat Shield Replacement (1.8L LUW and LWE)»(/chevrolet/cruze/i-2012-2015/remont/exhaust/#engine-exhaust-system) .
  4. Loosen the three way warm up catalytic converter V-clamp bolt (2) so that the three way warm up catalytic converter V-clamp (1) can be removed from catalytic converter to turbocharger flange.
  5. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/chevrolet/cruze/i-2012-2015/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) .
  6. Remove the engine front compartment insulator if equipped. Refer to «Front Compartment Insulator Replacement»(/chevrolet/cruze/i-2012-2015/remont/frames-subframes-crossmembers/#frame-and-underbody)
  7. Remove and DISCARD the 3 catalytic converter flange nuts (2).
  8. Remove the catalytic converter (3) from the three way warm up catalytic converter and hang aside.
  9. Remove the catalytic converter gasket (1).
  10. Remove the 2 three way warm up catalytic converter bracket nuts (1) and (2).
  11. Remove the three way warm up catalytic converter and the three way warm up catalytic converter to turbocharger seal ring.
  12. Remove the heated oxygen sensor 1 from the three way warm up catalytic converter. Refer to «Heated Oxygen Sensor Replacement - Sensor 1»(/chevrolet/cruze/i-2012-2015/remont/testing-diagnostics/#engine-controls-and-fuel-14l-luv-repair-instructions) .
  1. Install the heated oxygen sensor 1 to the three way warm up catalytic converter. Refer to «Heated Oxygen Sensor Replacement - Sensor 1»(/chevrolet/cruze/i-2012-2015/remont/testing-diagnostics/#engine-controls-and-fuel-14l-luv-repair-instructions) .
  2. Pre-install a NEW three way warm up catalytic converter V-clamp.
  3. Install the three way warm up catalytic converter to the turbocharger and the three way warm up catalytic converter brackets. Install a NEW three way warm up catalytic converter to turbocharger seal ring.
  4. Install and hand-tighten the 2 three way warm up catalytic converter bracket nuts (1) and (2).
  5. Lower the vehicle.
  6. Install the three way warm up catalytic converter V-clamp to the catalytic converter to turbocharger flange.
  7. The three way warm up catalytic converter V-clamp (1) should be installed in the shown position.
  8. Hand-tighten the three way warm up catalytic converter V-clamp.
  9. Raise and support the vehicle.
  10. Tighten the 2 three way catalytic converter bracket nuts to 22 (16 lb ft).
  11. Install the catalytic converter (3) and a NEW catalytic converter gasket (1) to the three way warm up catalytic converter.
  12. Install the 3 NEW catalytic converter flange nuts (2) and tighten to 22 (16 lb ft).
  13. Install the engine front compartment insulator if equipped. Refer to «Front Compartment Insulator Replacement»(/chevrolet/cruze/i-2012-2015/remont/frames-subframes-crossmembers/#frame-and-underbody)
  14. Lower the vehicle.
  15. Tighten the three way catalytic converter V-clamp bolt to 13 (115 lb in).
  16. Install the exhaust manifold heat shield. Refer to «Exhaust Manifold Heat Shield Replacement (1.4L LUV)»(/chevrolet/cruze/i-2012-2015/remont/exhaust/#engine-exhaust-system) , «Exhaust Manifold Heat Shield Replacement (1.8L LUW and LWE)»(/chevrolet/cruze/i-2012-2015/remont/exhaust/#engine-exhaust-system) .
  17. Connect the heated oxygen sensor 1 wiring harness plug. Refer to «Heated Oxygen Sensor Replacement - Sensor 1»(/chevrolet/cruze/i-2012-2015/remont/testing-diagnostics/#engine-controls-and-fuel-14l-luv-repair-instructions) .
  18. Connect battery negative cable. Refer to «Battery Negative Cable Disconnection and Connection»(/chevrolet/cruze/i-2012-2015/remont/charging-system/#battery-charging-system-and-starting-system) .
  19. Close the hood.

Scheme 4

Scheme 4: Exhaust Pipe Front Hanger Bracket Replacement
Scheme 4: Exhaust Pipe Front Hanger Bracket Replacement
CalloutComponent Name
WARNING: Refer to Exhaust Service Warning . WARNING: Refer to Protective Goggles and Glove Warning . Preliminary Procedure Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle . Special Tools EN-45059 Angle MeterFor equivalent regional tools, refer to Special Tools .
1Exhaust Pipe Front Hanger Insulator Nut (Qty: 2) CAUTION: Refer to Fastener Caution . Tighten 17 N.m (13 lb ft)
2Exhaust Pipe Front Hanger Bracket Bolt (Qty: 2) CAUTION: Refer to Torque-to-Yield Fastener Caution . Procedure Install NEW bolts, do NOT reuse old bolts. Tighten First Pass: 22 N.m (16 lb ft). Final Pass: 30-45 degrees, using the EN-45059 meter.
3Drivetrain and Front Suspension Frame Support Bolt (Qty: 2) Procedure Install NEW bolts, do NOT reuse old bolts. Tighten First Pass: 60 N.m (44 lb ft). Final Pass: 30-45 degrees, using the EN-45059 meter.
4Exhaust Pipe Front Hanger Bracket
WARNING
Refer to Exhaust Service Warning .
CAUTION
Refer to Fastener Caution .

Exhaust Pipe Front Hanger Bracket Replacement

Scheme 5

Scheme 5: Catalytic Converter Heat Shield Replacement (1.4L LUV)
Scheme 5: Catalytic Converter Heat Shield Replacement (1.4L LUV)
CalloutComponent Name
WARNING: In order to avoid being burned, do not service the exhaust system while it is still hot. Service the system when it is cool. WARNING: Always wear protective goggles and gloves when removing exhaust parts as falling rust and sharp edges from worn exhaust components could result in serious personal injury. Preliminary Procedure Open the hood. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle
1Catalytic Converter Heat Shield Bolt (Qty: 4) CAUTION: Refer to Fastener Caution . Tighten: 10 N.m (89 lb in)
2Catalytic Converter Heat Shield
WARNING
In order to avoid being burned, do not service the exhaust system while it is still hot. Service the system when it is cool.
WARNING
Always wear protective goggles and gloves when removing exhaust parts as falling rust and sharp edges from worn exhaust components could result in serious personal injury.
CAUTION
Refer to Fastener Caution .

Catalytic Converter Heat Shield Replacement (1.4L LUV)

WARNINGRefer to Exhaust Service Warning .
  1. Open the hood.
  2. Disconnect the battery negative cable. Refer to «Battery Negative Cable Disconnection and Connection»(/chevrolet/cruze/i-2012-2015/remont/charging-system/#battery-charging-system-and-starting-system) .
  3. Disconnect the heated oxygen sensor wiring harness plug.
  4. Remove the oil level indicator tube. Refer to «Oil Level Indicator Tube Replacement»(/chevrolet/cruze/i-2012-2015/remont/mechanical/#engine-mechanical-18l-luw-and-lwe) .
  5. Remove the wiring harness bracket bolt (2) and the wiring harness bracket (1).
  6. Remove the 2 exhaust manifold heat shield bolts (4).
  7. Remove the exhaust manifold heat shield (3).
  1. Install the exhaust manifold heat shield (3).
  2. Install the 2 exhaust manifold heat shield bolts (4) and tighten to 8 N.m (71 lb in).
  3. Install the wiring harness bracket (1) and the wiring harness bracket bolt (2) and tighten to 15 N.m (11 lb ft).
  4. Install the oil level indicator tube. Refer to «Oil Level Indicator Tube Replacement»(/chevrolet/cruze/i-2012-2015/remont/mechanical/#engine-mechanical-18l-luw-and-lwe) .
  5. Connect the heated oxygen sensor wiring harness plug.
  6. Connect the battery negative cable. Refer to «Battery Negative Cable Disconnection and Connection»(/chevrolet/cruze/i-2012-2015/remont/charging-system/#battery-charging-system-and-starting-system) .
  7. Close the hood.

Scheme 6

Scheme 6: Exhaust Heat Shield Replacement
Scheme 6: Exhaust Heat Shield Replacement
CalloutComponent Name
WARNING: In order to avoid being burned, do not service the exhaust system while it is still hot. Service the system when it is cool. WARNING: Always wear protective goggles and gloves when removing exhaust parts as falling rust and sharp edges from worn exhaust components could result in serious personal injury. Preliminary Procedure Remove the exhaust front pipe. Refer to Exhaust Front Pipe Replacement .
1Heat Shield Retainer (Qty: 7)
2Heat Shield
WARNING
In order to avoid being burned, do not service the exhaust system while it is still hot. Service the system when it is cool.
WARNING
Always wear protective goggles and gloves when removing exhaust parts as falling rust and sharp edges from worn exhaust components could result in serious personal injury.

Exhaust Heat Shield Replacement

Scheme 7

Scheme 7: Fuel Tank Heat Shield Replacement
Scheme 7: Fuel Tank Heat Shield Replacement
CalloutComponent Name
WARNING: Refer to Safety Goggles and Fuel Warning . WARNING: Refer to Actions to Take When Working with Fuel Warning . Preliminary Procedure Remove the fuel tank. Refer to Fuel Tank Replacement .
1Fuel Tank Heat Shield Retaining Clamp (Qty: 3)
2Fuel Tank Heat Shield
WARNING
Refer to Safety Goggles and Fuel Warning .

Fuel Tank Heat Shield Replacement

Scheme 8

Scheme 8: Exhaust Manifold Heat Shield Replacement (1.4L LUV)
Scheme 8: Exhaust Manifold Heat Shield Replacement (1.4L LUV)
CalloutComponent Name
WARNING: In order to avoid being burned, do not service the exhaust system while it is still hot. Service the system when it is cool.
1Exhaust Manifold Heat Shield Bolts (Qty: 3) CAUTION: Refer to Fastener Caution . Tighten 8 N.m (71 lb in)
2Exhaust Manifold Heat Shield
WARNING
In order to avoid being burned, do not service the exhaust system while it is still hot. Service the system when it is cool.
CAUTION
Refer to Fastener Caution .

Exhaust Manifold Heat Shield Replacement (1.4L LUV)

WARNINGRefer to Exhaust Service Warning .
  1. Open the hood.
  2. Disconnect the battery negative cable. Refer to «Battery Negative Cable Disconnection and Connection»(/chevrolet/cruze/i-2012-2015/remont/charging-system/#battery-charging-system-and-starting-system) .
  3. Disconnect the heated oxygen sensor wiring harness plug.
  4. Remove the oil level indicator tube. Refer to «Oil Level Indicator Tube Replacement»(/chevrolet/cruze/i-2012-2015/remont/mechanical/#engine-mechanical-18l-luw-and-lwe) .
  5. Remove the wiring harness bracket bolt (2) and the wiring harness bracket (1).
  6. Remove the 2 exhaust manifold heat shield bolts (4).
  7. Remove the exhaust manifold heat shield (3).
  1. Install the exhaust manifold heat shield (3).
  2. Install the 2 exhaust manifold heat shield bolts (4) and tighten to 8 N.m (71 lb in).
  3. Install the wiring harness bracket (1) and the wiring harness bracket bolt (2) and tighten to 15 N.m (11 lb ft).
  4. Install the oil level indicator tube. Refer to «Oil Level Indicator Tube Replacement»(/chevrolet/cruze/i-2012-2015/remont/mechanical/#engine-mechanical-18l-luw-and-lwe) .
  5. Connect the heated oxygen sensor wiring harness plug.
  6. Connect the battery negative cable. Refer to «Battery Negative Cable Disconnection and Connection»(/chevrolet/cruze/i-2012-2015/remont/charging-system/#battery-charging-system-and-starting-system) .
  7. Close the hood.

Scheme 9

Scheme 9: Exhaust Rear Muffler Heat Shield Replacement
Scheme 9: Exhaust Rear Muffler Heat Shield Replacement
CalloutComponent Name
WARNING: Refer to Exhaust Service Warning . WARNING: Refer to Protective Goggles and Glove Warning . Preliminary Procedures Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle . Separate the exhaust rear muffler from the underbody and support the exhaust system.
1Heat Shield Retainer (Qty: 4)
2Exhaust Rear Muffler Heat Shield
WARNING
Refer to Exhaust Service Warning .

Exhaust Rear Muffler Heat Shield Replacement

WARNINGRefer to Exhaust Service Warning .
  1. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(/chevrolet/cruze/i-2012-2015/remont/hoistjack/#general-information__lifting-and-jacking-the-vehicle) .
  2. Read the exhaust system cutting instructions before cutting the exhaust system. .
  3. Remove the 2 exhaust rear muffler hanger insulators (3) from the exhaust rear muffler (4).
  4. Remove the exhaust rear muffler end pipe bracket bolt (1) from the exhaust rear muffler end pipe bracket (2).
  5. Remove the exhaust rear muffler end pipe bracket (2).
  6. Cut the exhaust rear muffler at position (2) and remove the exhaust rear muffler end pipe.
  7. Cut the exhaust rear muffler at position (1).
  8. Remove the exhaust rear muffler.
  1. Install the exhaust rear muffler (6) and hang in the 2 exhaust rear muffler hanger insulators (5).
  2. Install the exhaust pipe clamp (1) and loosely tighten.
  3. Install the exhaust rear muffler end pipe bracket (3) to the exhaust rear muffler end pipe.
  4. Install the exhaust rear muffler end pipe.
  5. Install the exhaust rear muffler end pipe bracket bolt (4) to the exhaust rear muffler end pipe bracket (3) and tighten to 22 N.m (16 lb ft).
  6. Install the exhaust pipe clamp (2) and loosely tighten.
  7. Position the exhaust rear muffler.
  8. Tighten the exhaust pipe clamp (1) to 20 N.m (15 lb ft).
  9. Position the exhaust rear muffler end pipe.
  10. Tighten the exhaust pipe clamp (2) to 20 N.m (15 lb ft).
  11. Lower the vehicle.

Scheme 10

Scheme 10: Catalytic Converter
Scheme 10: Catalytic Converter

The catalytic converter is an emission control device added to the engine exhaust system in order to reduce hydrocarbons (HC), carbon monoxide (CO), and oxides of nitrogen (NOx) pollutants from the exhaust gas. The catalytic converter is comprised of a ceramic monolith substrate, supported in insulation and housed within a sheet metal shell. The substrate may be washcoated with 3 noble metals, Platium (Pt), Palladium (Pd) and Rhodium (Rh). The catalyst in the converter is not serviceable.

Scheme 11

Scheme 11: Exhaust Rear Muffler
Scheme 11: Exhaust Rear Muffler

The rear muffler is to reduce broad band engine exhaust noise. It is comprised of a series of perforated tubes and baffles to break up the sound waves and reflect them.

It is made of stainless steel to protect the front muffler from corrosion.

It is mounted behind the rear wheel.

Special Tools Illustration Tool Number/Description EN-35314-A J-35314-A Exhaust Back Pressure Gauge EN-45059 J 45059 Angle Meter EN-6179 KM-6179 J-39174-C Heated Oxygen Sensor Remover/Installer

Scheme 12

Scheme 12: Special Tools
Scheme 12: Special Tools

Scheme 13

Scheme 13
Scheme 13