Exhaust Pipe Gasket: Service and Repair
Exhaust Seal Replacement (LH8) (5.3L)
Removal Procedure
Warning: Refer to Exhaust Service Warning (Exhaust Service Warning).
Warning: Refer to Protective Goggles and Glove Warning (Protective Goggles and Glove Warning).
1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle (Description and Operation).
2. Disconnect the muffler assembly from the catalytic converters. Refer to Exhaust Muffler Replacement (LLV/LLR) (Service and Repair) Exhaust Muffler Replacement (LH9) (Service and Repair).
3. If removing the left side seal, perform the following:
1. Remove the catalytic converter to exhaust manifold nuts (1).
Note: Support the converter with mechanics wire.
2. Position the catalytic converter rearward enough in order to allow clearance to remove the seal.
3. Remove and discard the exhaust manifold seal (2).
4. If removing the right side seal, perform the following:
1. Remove the catalytic converter to exhaust manifold nuts (2).
Note: Support the converter with mechanics wire.
2. Position the catalytic converter rearward enough in order to allow clearance to remove the seal.
3. Remove and discard the exhaust manifold seal (1).
Installation Procedure
1. If the right side seal was removed, Perform the following:
1. Position the catalytic converter rearward enough in order to allow clearance to install the seal.
2. Install a NEW exhaust manifold seal (1).
Caution: Refer to Fastener Caution (Fastener Caution).
3. Install the catalytic converter to exhaust manifold nuts (2) and tighten to 50 Nm (37 lb ft.
2. If removing the left side seal, perform the following:
1. Position the catalytic converter rearward enough in order to allow clearance to install the seal.
2. Install a NEW exhaust manifold seal (2).
3. Install the catalytic converter to exhaust manifold nuts (1) and tighten to 50 Nm (37 lb ft).
3. Connect the muffler assembly to the catalytic converters. Refer to Exhaust Muffler Replacement (LLV/LLR) (Service and Repair) Exhaust Muffler Replacement (LH9) (Service and Repair).
4. Lower the vehicle.
5. Inspect for exhaust leaks.